ZyXEL Communications AMG1202T10A Wireless N-Lite ADSL2+ 4-port Gateway User Manual AMG1202 T10A Part1

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AMG1202-T10A
Wireless N-lite ADSL2+ 4-port Ethernet Gateway
Default Login Details
IP Address
http://192.168.1.1
Password
1234
Firmware Version 1.00
Edition 1, 6/2011
www.zyxel.com
www.zyxel.com
Copyright © 2011
ZyXEL Communications Corporation
About This User's Guide
About This User's Guide
Intended Audience
This manual is intended for people who want to configure the ZyXEL Device using the web
configurator. You should have at least a basic knowledge of TCP/IP networking concepts and
topology.
Related Documentation
• Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. It contains
information on setting up your network and configuring for Internet access.
• Support Disc
Refer to the included CD for support documents.
• ZyXEL Web Site
Please refer to www.zyxel.com for additional support documentation and product certifications.
Documentation Feedback
Send your comments, questions or suggestions to: techwriters@zyxel.com.tw
Thank you!
The Technical Writing Team, ZyXEL Communications Corp.
Need More Help?
More help is available at www.zyxel.com.
• Download Library
Search for the latest product updates and documentation from this link. Read the Tech Doc
Overview to find out how to efficiently use the User Guide, Quick Start Guide and Command Line
Interface Reference Guide in order to better understand how to use your product.
AMG1202-T10A User’s Guide
About This User's Guide
• Knowledge Base
If you have a specific question about your product, the answer may be here. This is a collection
of answers to previously asked questions about ZyXEL products.
• Forum
This contains discussions on ZyXEL products. Learn from others who use ZyXEL products and
share your experiences as well.
Customer Support
In the event of problems that cannot be solved by using this manual, you should contact your
vendor. If you cannot contact your vendor, then contact a ZyXEL office for the region in which you
bought the device. See http://www.zyxel.com/web/contact_us.php for contact information. Please
have the following information ready when you contact an office.
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
Disclaimer
Graphics in this book may differ slightly from the product due to differences in operating systems,
operating system versions, or if you installed updated firmware/software for your device. Every
effort has been made to ensure that the information in this manual is accurate.
AMG1202-T10A User’s Guide
Document Conventions
Document Conventions
Warnings and Notes
These are how warnings and notes are shown in this User’s Guide.
Warnings tell you about things that could harm you or your device.
Note: Notes tell you other important information (for example, other things you may
need to configure or helpful tips) or recommendations.
Syntax Conventions
• The AMG1202-T10A may be referred to as the “ZyXEL Device”, the “device”, the “system” or the
“product” in this User’s Guide.
• Product labels, screen names, field labels and field choices are all in bold font.
• A key stroke is denoted by square brackets and uppercase text, for example, [ENTER] means the
“enter” or “return” key on your keyboard.
• “Enter” means for you to type one or more characters and then press the [ENTER] key. “Select”
or “choose” means for you to use one of the predefined choices.
• A right angle bracket ( > ) within a screen name denotes a mouse click. For example,
Maintenance > Log > Log Setting means you first click Maintenance in the navigation panel,
then the Log sub menu and finally the Log Setting tab to get to that screen.
• Units of measurement may denote the “metric” value or the “scientific” value. For example, “k”
for kilo may denote “1000” or “1024”, “M” for mega may denote “1000000” or “1048576” and so
on.
• “e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.
Icons Used in Figures
Figures in this User’s Guide may use the following generic icons. The ZyXEL Device icon is not an
exact representation of your device.
ZyXEL Device
AMG1202-T10A User’s Guide
Computer
Notebook computer
Document Conventions
Server
Firewall
Router
Switch
Telephone
AMG1202-T10A User’s Guide
Safety Warnings
Safety Warnings
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
•
Do NOT use this product near water, for example, in a wet basement or near a swimming pool.
Do NOT expose your device to dampness, dust or corrosive liquids.
Do NOT store things on the device.
Do NOT install, use, or service this device during a thunderstorm. There is a remote risk of electric shock
from lightning.
Connect ONLY suitable accessories to the device.
Do NOT open the device or unit. Opening or removing covers can expose you to dangerous high voltage
points or other risks. ONLY qualified service personnel should service or disassemble this device. Please
contact your vendor for further information.
Make sure to connect the cables to the correct ports.
Place connecting cables carefully so that no one will step on them or stumble over them.
Always disconnect all cables from this device before servicing or disassembling.
Use ONLY an appropriate power adaptor or cord for your device.
Connect the power adaptor or cord to the right supply voltage (for example, 110V AC in North America or
230V AC in Europe).
Do NOT allow anything to rest on the power adaptor or cord and do NOT place the product where anyone can
walk on the power adaptor or cord.
Do NOT use the device if the power adaptor or cord is damaged as it might cause electrocution.
If the power adaptor or cord is damaged, remove it from the device and the power source.
Do NOT attempt to repair the power adaptor or cord. Contact your local vendor to order a new one.
Do not use the device outside, and make sure all the connections are indoors. There is a remote risk of
electric shock from lightning.
Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your device.
Use only No. 26 AWG (American Wire Gauge) or larger telecommunication line cord.
Antenna Warning! This device meets ETSI and FCC certification requirements when using the included
antenna(s). Only use the included antenna(s).
If you wall mount your device, make sure that no electrical lines, gas or water pipes will be damaged.
Your product is marked with this symbol, which is known as the WEEE mark. WEEE stands for Waste
Electronics and Electrical Equipment. It means that used electrical and electronic products should not be
mixed with general waste. Used electrical and electronic equipment should be treated separately.
AMG1202-T10A User’s Guide
Safety Warnings
AMG1202-T10A User’s Guide
Contents Overview
Contents Overview
User’s Guide ........................................................................................................................... 19
Introduction ................................................................................................................................21
The Web Configurator ................................................................................................................27
Status Screens ...........................................................................................................................33
Tutorials .....................................................................................................................................37
Technical Reference .............................................................................................................. 53
Internet and Wireless Setup Wizard........................................................................................... 55
WAN Setup ................................................................................................................................69
LAN Setup ..................................................................................................................................85
Wireless LAN .............................................................................................................................97
Network Address Translation (NAT) .........................................................................................127
Firewall .....................................................................................................................................139
Filters .......................................................................................................................................143
Static Route ..............................................................................................................................149
802.1Q/1P ................................................................................................................................153
Quality of Service (QoS) ..........................................................................................................159
Dynamic DNS Setup ................................................................................................................167
Remote Management ...............................................................................................................169
Universal Plug-and-Play (UPnP) ..............................................................................................178
System Settings .......................................................................................................................189
Logs .........................................................................................................................................193
Tools .........................................................................................................................................203
Diagnostic ................................................................................................................................209
Troubleshooting .......................................................................................................................213
Product Specifications ..............................................................................................................217
AMG1202-T10A User’s Guide
Contents Overview
10
AMG1202-T10A User’s Guide
Table of Contents
Table of Contents
About This User's Guide .......................................................................................................... 3
Document Conventions ........................................................................................................... 5
Safety Warnings........................................................................................................................ 7
Contents Overview .................................................................................................................. 9
Table of Contents ................................................................................................................... 11
Part I: User’s Guide ................................................................................19
Chapter 1
Introduction............................................................................................................................. 21
1.1 Overview ..............................................................................................................................21
1.2 Ways to Manage the ZyXEL Device ....................................................................................21
1.3 Good Habits for Managing the ZyXEL Device .....................................................................21
1.4 Applications for the ZyXEL Device .......................................................................................22
1.4.1 Internet Access ...........................................................................................................22
1.5 Wireless Access ...................................................................................................................22
1.5.1 Using the WPS/WLAN Button ....................................................................................23
1.6 LEDs (Lights) .......................................................................................................................24
1.7 The RESET Button ...............................................................................................................25
1.7.1 Using the Reset Button ...............................................................................................25
Chapter 2
The Web Configurator ............................................................................................................ 27
2.1 Overview ..............................................................................................................................27
2.1.1 Accessing the Web Configurator ................................................................................27
2.2 The Main Screen ..................................................................................................................29
2.2.1 Title Bar ......................................................................................................................29
2.2.2 Navigation Panel ........................................................................................................30
2.2.3 Main Window ..............................................................................................................31
2.2.4 Status Bar ...................................................................................................................31
Chapter 3
Status Screens ........................................................................................................................ 33
3.1 Overview ..............................................................................................................................33
3.2 The Status Screen ................................................................................................................33
AMG1202-T10A User’s Guide
11
Table of Contents
Chapter 4
Tutorials ................................................................................................................................... 37
4.1 Overview ..............................................................................................................................37
4.2 Setting Up a Secure Wireless Network ................................................................................37
4.2.1 Configuring the Wireless Network Settings ................................................................37
4.2.2 Using WPS .................................................................................................................38
4.2.3 Without WPS ..............................................................................................................42
4.2.4 Setting Up Wireless Network Scheduling ...................................................................43
4.3 Configuring the MAC Address Filter .....................................................................................44
4.4 Configuring Static Route for Routing to Another Network ....................................................46
4.5 Multiple Public and Private IP Address Mappings ................................................................49
4.5.1 Full Feature NAT + Many-to-Many No Overload Mapping .........................................49
4.5.2 Full Feature NAT + One-to-One Mapping ...................................................................51
4.6 Multiple WAN Connections Example ...................................................................................52
Part II: Technical Reference...................................................................53
Chapter 5
Internet and Wireless Setup Wizard...................................................................................... 55
5.1 Overview ..............................................................................................................................55
5.2 Internet Access Wizard Setup ..............................................................................................55
5.2.1 Manual Configuration .................................................................................................58
5.3 Wireless Connection Wizard Setup ......................................................................................63
5.3.1 Manually Assign a WPA-PSK key ...............................................................................66
5.3.2 Manually Assign a WEP Key ......................................................................................66
Chapter 6
WAN Setup .............................................................................................................................. 69
6.1 Overview ..............................................................................................................................69
6.1.1 What You Can Do in the WAN Screens ......................................................................69
6.1.2 What You Need to Know About WAN .........................................................................69
6.1.3 Before You Begin ........................................................................................................70
6.2 The Internet Access Setup Screen ......................................................................................71
6.2.1 Advanced Internet Access Setup ...............................................................................73
6.3 The More Connections Screen ............................................................................................74
6.3.1 More Connections Edit ...............................................................................................76
6.3.2 Configuring More Connections Advanced Setup ........................................................78
6.4 WAN Technical Reference ...................................................................................................79
6.4.1 Encapsulation .............................................................................................................79
6.4.2 Multiplexing .................................................................................................................80
6.4.3 VPI and VCI ................................................................................................................80
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AMG1202-T10A User’s Guide
Table of Contents
6.4.4 IP Address Assignment ..............................................................................................80
6.4.5 Nailed-Up Connection (PPP) ......................................................................................81
6.4.6 NAT .............................................................................................................................81
6.5 Traffic Shaping .....................................................................................................................81
6.5.1 ATM Traffic Classes ....................................................................................................82
Chapter 7
LAN Setup ............................................................................................................................... 85
7.1 Overview ..............................................................................................................................85
7.1.1 What You Can Do in the LAN Screens .......................................................................85
7.1.2 What You Need To Know About LAN .........................................................................85
7.1.3 Before You Begin ........................................................................................................86
7.2 The LAN IP Screen ..............................................................................................................86
7.2.1 The Advanced LAN IP Setup Screen .........................................................................87
7.3 The DHCP Setup Screen .....................................................................................................88
7.4 The Client List Screen ..........................................................................................................89
7.5 The IP Alias Screen .............................................................................................................90
7.5.1 Configuring the LAN IP Alias Screen ..........................................................................91
7.6 LAN Technical Reference .....................................................................................................92
7.6.1 LANs, WANs and the ZyXEL Device ..........................................................................92
7.6.2 DHCP Setup ...............................................................................................................93
7.6.3 DNS Server Addresses ..............................................................................................93
7.6.4 LAN TCP/IP ................................................................................................................93
7.6.5 RIP Setup ...................................................................................................................94
7.6.6 Multicast .....................................................................................................................95
Chapter 8
Wireless LAN........................................................................................................................... 97
8.1 Overview ..............................................................................................................................97
8.1.1 What You Can Do in the Wireless LAN Screens ........................................................97
8.1.2 What You Need to Know About Wireless ...................................................................98
8.1.3 Before You Start ..........................................................................................................98
8.2 The AP Screen .....................................................................................................................99
8.2.1 No Security ...............................................................................................................100
8.2.2 WEP Encryption .......................................................................................................100
8.2.3 WPA(2)-PSK .............................................................................................................102
8.2.4 WPA(2) Authentication ..............................................................................................103
8.2.5 Wireless LAN Advanced Setup ................................................................................104
8.2.6 MAC Filter
.............................................................................................................106
8.3 The More AP Screen ..........................................................................................................107
8.3.1 More AP Edit ............................................................................................................108
8.4 The WPS Screen ...............................................................................................................108
8.5 The WPS Station Screen ................................................................................................... 110
AMG1202-T10A User’s Guide
13
Table of Contents
8.6 The WDS Screen ............................................................................................................... 110
8.7 The Scheduling Screen ...................................................................................................... 112
8.8 Wireless LAN Technical Reference .................................................................................... 112
8.8.1 Wireless Network Overview ...................................................................................... 113
8.8.2 Additional Wireless Terms ........................................................................................ 114
8.8.3 Wireless Security Overview ...................................................................................... 114
8.8.4 Signal Problems ....................................................................................................... 117
8.8.5 BSS .......................................................................................................................... 117
8.8.6 MBSSID .................................................................................................................... 118
8.8.7 Wireless Distribution System (WDS) ........................................................................ 118
8.8.8 WiFi Protected Setup (WPS) .................................................................................... 118
Chapter 9
Network Address Translation (NAT).................................................................................... 127
9.1 Overview ............................................................................................................................127
9.1.1 What You Can Do in the NAT Screens .....................................................................127
9.1.2 What You Need To Know About NAT .......................................................................127
9.2 The NAT General Setup Screen ........................................................................................128
9.3 The Port Forwarding Screen ..............................................................................................129
9.3.1 Configuring the Port Forwarding Screen ..................................................................130
9.3.2 The Port Forwarding Rule Edit Screen .....................................................................131
9.4 The Address Mapping Screen ............................................................................................132
9.4.1 The Address Mapping Rule Edit Screen ..................................................................134
9.5 The ALG Screen ................................................................................................................135
9.6 NAT Technical Reference ...................................................................................................135
9.6.1 NAT Definitions .........................................................................................................135
9.6.2 What NAT Does ........................................................................................................136
9.6.3 How NAT Works .......................................................................................................136
9.6.4 NAT Application ........................................................................................................137
9.6.5 NAT Mapping Types .................................................................................................137
Chapter 10
Firewall .................................................................................................................................. 139
10.1 Overview ..........................................................................................................................139
10.1.1 What You Can Do in the Firewall Screens ..............................................................139
10.1.2 What You Need to Know About Firewall .................................................................139
10.2 The Firewall Screen .........................................................................................................141
Chapter 11
Filters ..................................................................................................................................... 143
11.1 Overview .........................................................................................................................143
11.1.1 What You Can Do in the Filter Screens ..................................................................143
11.1.2 What You Need to Know About Filtering .................................................................143
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AMG1202-T10A User’s Guide
Table of Contents
11.2 The URL Filter Screen .....................................................................................................144
11.3 The Application Filter Screen ...........................................................................................145
11.4 The IP/MAC Filter Screen ................................................................................................146
Chapter 12
Static Route ........................................................................................................................... 149
12.1 Overview .........................................................................................................................149
12.1.1 What You Can Do in the Static Route Screens .......................................................150
12.2 The Static Route Screen ..................................................................................................150
12.2.1 Static Route Edit ...................................................................................................151
Chapter 13
802.1Q/1P............................................................................................................................... 153
13.1 Overview ..........................................................................................................................153
13.1.1 What You Can Do in the 802.1Q/1P Screens .........................................................153
13.1.2 What You Need to Know About 802.1Q/1P ............................................................153
13.2 The 802.1Q/1P Group Setting Screen .............................................................................154
13.2.1 Editing 802.1Q/1P Group Setting ...........................................................................156
13.3 The 802.1Q/1P Port Setting Screen .................................................................................157
Chapter 14
Quality of Service (QoS)....................................................................................................... 159
14.1 Overview ..........................................................................................................................159
14.1.1 What You Can Do in the QoS Screens ...................................................................159
14.1.2 What You Need to Know About QoS ......................................................................160
14.2 The QoS Screen .............................................................................................................160
14.2.1 The QoS Settings Summary Screen ......................................................................163
14.3 QoS Technical Reference ................................................................................................164
14.3.1 IEEE 802.1p ...........................................................................................................164
14.3.2 IP Precedence ........................................................................................................164
14.3.3 Automatic Priority Queue Assignment ....................................................................164
Chapter 15
Dynamic DNS Setup ............................................................................................................. 167
15.1 Overview ..........................................................................................................................167
15.1.1 What You Can Do in the DDNS Screen ..................................................................167
15.1.2 What You Need To Know About DDNS ..................................................................167
15.2 The Dynamic DNS Screen ...............................................................................................168
Chapter 16
Remote Management............................................................................................................ 169
16.1 Overview ..........................................................................................................................169
16.1.1 What You Can Do in the Remote Management Screens .......................................170
AMG1202-T10A User’s Guide
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Table of Contents
16.1.2 What You Need to Know About Remote Management ...........................................170
16.2 The WWW Screen ...........................................................................................................171
16.2.1 Configuring the WWW Screen ................................................................................171
16.3 The Telnet Screen ............................................................................................................171
16.4 The FTP Screen ...............................................................................................................172
16.5 The SNMP Screen ...........................................................................................................173
16.5.1 Configuring SNMP ..................................................................................................175
16.6 The DNS Screen .............................................................................................................176
16.7 The ICMP Screen .............................................................................................................177
Chapter 17
Universal Plug-and-Play (UPnP).......................................................................................... 178
17.1 Overview ..........................................................................................................................178
17.1.1 What You Can Do in the UPnP Screen ..................................................................178
17.1.2 What You Need to Know About UPnP ....................................................................178
17.2 The UPnP Screen ............................................................................................................179
17.3 Installing UPnP in Windows Example ..............................................................................180
17.4 Using UPnP in Windows XP Example .............................................................................183
Chapter 18
System Settings.................................................................................................................... 189
18.1 Overview ..........................................................................................................................189
18.1.1 What You Can Do in the System Settings Screens ................................................189
18.2 The General Screen .........................................................................................................189
18.3 The Time and Date Screen .............................................................................................190
Chapter 19
Logs ....................................................................................................................................... 193
19.1 Overview ..........................................................................................................................193
19.1.1 What You Need To Know About Logs .....................................................................193
19.2 The System Log Screen ...................................................................................................193
19.3 Log Descriptions ..............................................................................................................194
Chapter 20
Tools ...................................................................................................................................... 203
20.1 Overview ..........................................................................................................................203
20.1.1 What You Can Do in the Tool Screens ...................................................................203
20.2 The Firmware Screen .......................................................................................................203
20.3 The Configuration Screen ................................................................................................206
20.4 The Restart Screen ..........................................................................................................208
Chapter 21
Diagnostic ............................................................................................................................. 209
16
AMG1202-T10A User’s Guide
Table of Contents
21.1 Overview ..........................................................................................................................209
21.1.1 What You Can Do in the Diagnostic Screens .........................................................209
21.2 The General Screen .........................................................................................................209
21.3 The DSL Line Screen .......................................................................................................210
Chapter 22
Troubleshooting.................................................................................................................... 213
22.1 Power, Hardware Connections, and LEDs .......................................................................213
22.2 ZyXEL Device Access and Login .....................................................................................214
22.3 Internet Access ................................................................................................................215
Chapter 23
Product Specifications ......................................................................................................... 217
23.1 Hardware Specifications ...................................................................................................217
23.2 Firmware Specifications ...................................................................................................217
23.3 Wireless Features ............................................................................................................220
23.4 Power Adaptor Specifications ..........................................................................................222
Appendix A Setting up Your Computer’s IP Address ........................................................... 225
Appendix B IP Addresses and Subnetting........................................................................... 247
Appendix C Pop-up Windows, JavaScripts and Java Permissions ..................................... 255
Appendix D Wireless LANs.................................................................................................. 265
Appendix E Services............................................................................................................ 279
Appendix F Legal Information.............................................................................................. 283
Index ...................................................................................................................................... 287
AMG1202-T10A User’s Guide
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Table of Contents
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AMG1202-T10A User’s Guide
P ART I
User’s Guide
19
20
C HAPT ER
Introduction
1.1 Overview
The AMG1202-T10A is an ADSL2+ router. By integrating DSL and NAT, you are provided with ease
of installation and high-speed, shared Internet access. The AMG1202-T10A is also a complete
security solution with a robust firewall and content filtering.
Only use firmware for your ZyXEL Device’s specific model. Refer to the
label on the bottom of your ZyXEL Device.
Note: All screens displayed in this user’s guide are from the AMG1202-T10A model.
See the product specifications for a full list of features.
1.2 Ways to Manage the ZyXEL Device
Use any of the following methods to manage the ZyXEL Device.
• Web Configurator. This is recommended for everyday management of the ZyXEL Device using a
(supported) web browser.
• Command Line Interface. Line commands are mostly used for troubleshooting by service
engineers.
• FTP for firmware upgrades and configuration backup/restore.
• TR-069. This is an auto-configuration server used to remotely configure your device.
1.3 Good Habits for Managing the ZyXEL Device
Do the following things regularly to make the ZyXEL Device more secure and to manage the ZyXEL
Device more effectively.
• Change the password. Use a password that’s not easy to guess and that consists of different
types of characters, such as numbers and letters.
• Write down the password and put it in a safe place.
• Back up the configuration (and make sure you know how to restore it). Restoring an earlier
working configuration may be useful if the device becomes unstable or even crashes. If you
forget your password, you will have to reset the ZyXEL Device to its factory default settings. If
you backed up an earlier configuration file, you would not have to totally re-configure the ZyXEL
Device. You could simply restore your last configuration.
AMG1202-T10A User’s Guide
21
Chapter 1 Introduction
1.4 Applications for the ZyXEL Device
Here are some example uses for which the ZyXEL Device is well suited.
1.4.1 Internet Access
Your ZyXEL Device provides shared Internet access by connecting the DSL port to the DSL or
MODEM jack on a splitter or your telephone jack. Computers can connect to the ZyXEL Device’s
LAN ports (or wirelessly).
Figure 1 ZyXEL Device’s Router Features
LAN
DSL
You can also configure firewall and filtering feature on the ZyXEL Device for secure Internet access.
When the firewall is on, all incoming traffic from the Internet to your network is blocked unless it is
initiated from your network. This means that probes from the outside to your network are not
allowed, but you can safely browse the Internet and download files.
Use the filtering feature to block access to specific web sites or Internet applications such as MSN or
Yahoo Messenger. You can also configure IP/MAC filtering rules for incoming or outgoing traffic.
Use QoS to efficiently manage traffic on your network by giving priority to certain types of traffic
and/or to particular computers. For example, you could make sure that the ZyXEL Device gives
voice over Internet calls high priority, and/or limit bandwidth devoted to the boss’s excessive file
downloading.
1.5 Wireless Access
The ZyXEL Device is a wireless Access Point (AP) for wireless clients, such as notebook computers
or PDAs and iPads. It allows them to connect to the Internet without having to rely on inconvenient
Ethernet cables.
22
AMG1202-T10A User’s Guide
Chapter 1 Introduction
You can configure your wireless network in either the built-in Web Configurator, or using the WPS
button.
Figure 2 Wireless Access Example
1.5.1 Using the WPS/WLAN Button
By default, the wireless network is turned off on the ZyXEL Device. To turn it on, simply press the
WPS/WLAN button on top of the device for 1 second. Once the WPS/WLAN LED turns green, the
wireless network is active.
You can also use the WPS/WLAN button to quickly set up a secure wireless connection between
the ZyXEL Device and a WPS-compatible client by adding one device at a time.
To activate WPS:
Make sure the POWER LED is on and not blinking.
Press the WPS/WLAN button for five to ten seconds and release it.
Press the WPS button on another WPS-enabled device within range of the ZyXEL Device. The WPS/
WLAN LED should flash while the ZyXEL Device sets up a WPS connection with the other wireless
device.
Once the connection is successfully made, the WPS/WLAN LED shines green.
AMG1202-T10A User’s Guide
23
Chapter 1 Introduction
1.6 LEDs (Lights)
The following graphic displays the labels of the LEDs.
Figure 3 LEDs
None of the LEDs are on if the ZyXEL Device is not receiving power.
Table 1 LED Descriptions
LED
COLOR
STATUS
DESCRIPTION
POWER
Green
On
The ZyXEL Device is receiving power and ready for use.
Blinking
The ZyXEL Device is self-testing.
On
The ZyXEL Device detected an error while self-testing, or there is a
device malfunction.
Off
The ZyXEL Device is not receiving power.
On
The ZyXEL Device has an Ethernet connection with a device on the
Local Area Network (LAN).
Blinking
The ZyXEL Device is sending/receiving data to /from the LAN.
Off
The ZyXEL Device does not have an Ethernet connection with the
LAN.
Green
On
The wireless network is activated.
Blinking
The ZyXEL Device is communicating with other wireless clients.
Orange
Blinking
The ZyXEL Device is setting up a WPS connection.
Off
The wireless network is not activated.
On
The DSL line is up.
Red
LAN 1-4
WPS/WLAN
DSL
INTERNET
Green
Green
Green
Blinking
The ZyXEL Device is initializing the DSL line.
Off
The DSL line is down.
On
The ZyXEL Device has an IP connection but no traffic.
Your device has a WAN IP address (either static or assigned by a
DHCP server), PPP negotiation was successfully completed (if
used) and the DSL connection is up.
Red
Blinking
The ZyXEL Device is sending or receiving IP traffic.
On
The ZyXEL Device attempted to make an IP connection but failed.
Possible causes are no response from a DHCP server, no PPPoE
response, PPPoE authentication failed.
Off
The ZyXEL Device does not have an IP connection.
Refer to the Quick Start Guide for information on hardware connections.
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1.7 The RESET Button
If you forget your password or cannot access the web configurator, you will need to use the RESET
button at the back of the device to reload the factory-default configuration file. This means that you
will lose all configurations that you had previously and the password will be reset to “1234”.
1.7.1 Using the Reset Button
Make sure the POWER LED is on (not blinking).
To set the device back to the factory default settings, press the RESET button for ten seconds or
until the POWER LED begins to blink and then release it. When the POWER LED begins to blink,
the defaults have been restored and the device restarts.
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The Web Configurator
2.1 Overview
The web configurator is an HTML-based management interface that allows easy device setup and
management via Internet browser. Use Internet Explorer 6.0 and later or Netscape Navigator 7.0
and later versions. The recommended screen resolution is 1024 by 768 pixels.
In order to use the web configurator you need to allow:
• Web browser pop-up windows from your device. Web pop-up blocking is enabled by default in
Windows XP SP (Service Pack) 2.
• JavaScripts (enabled by default).
• Java permissions (enabled by default).
See Appendix C on page 255 if you need to make sure these functions are allowed in Internet
Explorer.
2.1.1 Accessing the Web Configurator
Make sure your ZyXEL Device hardware is properly connected (refer to the Quick Start Guide).
Launch your web browser.
Type "192.168.1.1" as the URL.
A password screen displays. To access the administrative web configurator and manage the ZyXEL
Device, type the admin password (1234 by default) in the password screen and click Login. Click
Cancel to revert to the default user password in the password field. If you have changed the
password, enter your password and click Login.
Figure 4 Password Screen
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The following screen displays if you have not yet changed your password. It is strongly
recommended you change the default password. Enter a new password, retype it to confirm and
click Apply; alternatively click Ignore to proceed to the main menu if you do not want to change
the password now.
Figure 5 Change Password Screen
Select Go to Wizard setup and click Apply to display the wizard main screen. Otherwise, select
Go to Advanced setup and click Apply to display the Status screen.
Figure 6 Replace Factory Default Certificate Screen
Note: For security reasons, the ZyXEL Device automatically logs you out if you do not use
the web configurator for five minutes (default). If this happens, log in again.
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2.2 The Main Screen
Figure 7 Main Screen
As illustrated above, the main screen is divided into these parts:
• A - title bar
• B - navigation panel
• C - main window
• D - status bar
2.2.1 Title Bar
The title bar provides some icons in the upper right corner.
The icons provide the following functions.
Table 2 Web Configurator Icons in the Title Bar
ICON
DESCRIPTION
Wizards: Click this icon to go to the configuration wizards. See Chapter 5 on page
55 for more information.
Logout: Click this icon to log out of the web configurator.
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2.2.2 Navigation Panel
Use the menu items on the navigation panel to open screens to configure ZyXEL Device features.
The following tables describe each menu item.
Table 3 Navigation Panel Summary
LINK
TAB
Status
FUNCTION
This screen shows the ZyXEL Device’s general device and network status
information. Use this screen to access the statistics and client list.
Network
WAN
LAN
Wireless LAN
NAT
Internet Access
Setup
Use this screen to configure ISP parameters, WAN IP address
assignment, and other advanced properties.
More
Connections
Use this screen to configure additional WAN connections.
IP
Use this screen to configure LAN TCP/IP settings, and other advanced
properties.
DHCP Setup
Use this screen to configure LAN DHCP settings and DNS server.
Client List
Use this screen to view current DHCP client information and to always
assign specific IP addresses to individual MAC addresses (and host
names).
IP Alias
Use this screen to partition your LAN interface into subnets.
AP
Use this screen to configure the wireless LAN settings and WLAN
authentication/security settings.
More AP
Use this screen to configure multiple BSSs on the ZyXEL Device.
WPS
Use this screen to configure and view your WPS (Wi-Fi Protected Setup)
settings.
WPS Station
Use this screen to set up a WPS wireless network.
WDS
Use this screen to set up Wireless Distribution System links to other
access points.
Scheduling
Use this screen to configure the dates/times to enable or disable the
wireless LAN.
General
Use this screen to enable NAT.
Port Forwarding
Use this screen to make your local servers visible to the outside world.
ALG
Use this screen to enable or disable SIP ALG.
Security
Firewall
Filter
Use this screen to activate/deactivate the firewall.
URL Filter
Use this screen to block access to certain URL web sites.
Application Filter
Use this screen to allow or block traffic from certain applications.
IP/MAC Filter
Use this screen to configure IP/MAC filtering rules for incoming or
outgoing traffic.
Advanced
Static Route
802.1Q/1P
30
Use this screen to configure IP static routes to tell your device about
networks beyond the directly connected remote nodes.
Group Setting
Use this screen to activate 802.1Q/1P, specify the management VLAN
group, display the VLAN groups and configure the settings for each VLAN
group.
Port Setting
Use this screen to configure the PVID and assign traffic priority for each
port.
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Table 3 Navigation Panel Summary
LINK
QoS
TAB
FUNCTION
General
Use this screen to enable QoS and traffic prioritizing. You can also
configure the QoS rules and actions.
Dynamic
DNS
Remote
MGMT
UPnP
This screen allows you to use a static hostname alias for a dynamic IP
address.
WWW
Use this screen to configure through which interface(s) and from which
IP address(es) users can use HTTP to manage the ZyXEL Device.
Telnet
Use this screen to configure through which interface(s) and from which
IP address(es) users can use Telnet to manage the ZyXEL Device.
FTP
Use this screen to configure through which interface(s) and from which
IP address(es) users can use FTP to access the ZyXEL Device.
SNMP
Use this screen to configure through which interface(s) and from which
IP address(es) users can access the SNMP agent on the ZyXEL Device.
DNS
Use this screen to configure through which interface(s) and from which
IP address(es) users can send DNS queries to the ZyXEL Device.
ICMP
Use this screen to set whether or not your device will respond to pings
and probes for services that you have not made available.
General
Use this screen to turn UPnP on or off.
General
Use this screen to configure your device’s password.
Time and Date
Use this screen to change your ZyXEL Device’s time and date.
Maintenance
System
Logs
System Log
Use this screen to select which logs your device is to record.
Tools
Firmware
Use this screen to upload firmware to your device.
Configuration
Use this screen to backup and restore your device’s configuration
(settings) or reset the factory default settings.
Restart
This screen allows you to reboot the ZyXEL Device without turning the
power off.
General
Use this screen to test the connections to other devices.
DSL Line
This screen displays information to help you identify problems with the
DSL connection.
Diagnostic
2.2.3 Main Window
The main window displays information and configuration fields. It is discussed in the rest of this
document.
Right after you log in, the Status screen is displayed. See Chapter 3 on page 33 for more
information about the Status screen.
2.2.4 Status Bar
Check the status bar when you click Apply or OK to verify that the configuration has been updated.
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Status Screens
3.1 Overview
Use the Status screens to look at the current status of the device, system resources, and
interfaces (LAN and WAN). The Status screen also provides detailed information from DHCP and
statistics from bandwidth management, and traffic.
3.2 The Status Screen
Use this screen to view the status of the ZyXEL Device. Click Status to open this screen.
Figure 8 Status Screen
Each field is described in the following table.
Table 4 Status Screen
LABEL
DESCRIPTION
Refresh Interval
Select how often you want the ZyXEL Device to update this screen.
Apply
Click this to update this screen immediately.
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Table 4 Status Screen
LABEL
DESCRIPTION
Device Information
Host Name
This field displays the ZyXEL Device system name. It is used for identification.
Model Number
This is the model name of your device.
MAC Address
This is the MAC (Media Access Control) or Ethernet address unique to your
ZyXEL Device.
ZyNOS
Firmware
Version
This is the current version of the firmware inside the device. Click this to go to
the screen where you can change it.
DSL Firmware
Version
This is the current version of the device’s DSL modem code.
WAN Information
DSL Mode
This is the DSL standard that your ZyXEL Device is using.
Annex Type
This is the ADSL annex type that your ZyXEL Device is using.
IP Address
This is the current IP address of the ZyXEL Device in the WAN. Click this to go to
the screen where you can change it.
IP Subnet
Mask
This is the current subnet mask in the WAN.
Default
Gateway
This is the IP address of the default gateway, if applicable.
VPI/VCI
This is the Virtual Path Identifier and Virtual Channel Identifier that you entered
in the wizard or WAN screen.
LAN Information
IP Address
This is the current IP address of the ZyXEL Device in the LAN. Click this to go to
the screen where you can change it.
IP Subnet
Mask
This is the current subnet mask in the LAN.
DHCP
This field displays what DHCP services the ZyXEL Device is providing to the LAN.
Choices are:
Server - The ZyXEL Device is a DHCP server in the LAN. It assigns IP addresses
to other computers in the LAN.
Relay - The ZyXEL Device acts as a surrogate DHCP server and relays DHCP
requests and responses between the remote server and the clients.
None - The ZyXEL Device is not providing any DHCP services to the LAN.
Click this to go to the screen where you can change it.
WLAN Information
ESSID
This is the descriptive name used to identify the ZyXEL Device in a wireless LAN.
Click this to go to the screen where you can change it.
Channel
This is the channel number used by the ZyXEL Device now.
Security
This displays the type of security mode the ZyXEL Device is using in the wireless
LAN.
WPS
This displays whether WPS is activated. Click this to go to the screen where you
can configure the settings.
Status
This displays whether WLAN is activated.
Security
Firewall
This displays whether or not the ZyXEL Device’s firewall is activated. Click this to
go to the screen where you can change it.
System Status
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Table 4 Status Screen
LABEL
DESCRIPTION
System
Uptime
This field displays how long the ZyXEL Device has been running since it last
started up. The ZyXEL Device starts up when you plug it in, when you restart it
(Maintenance > Tools > Restart), or when you reset it.
Current Date/
Time
This field displays the current date and time in the ZyXEL Device. You can
change this in Maintenance > System > Time Setting.
System Mode
This displays whether the ZyXEL Device is functioning as a router or a bridge.
CPU Usage
This field displays what percentage of the ZyXEL Device’s processing ability is
currently used. When this percentage is close to 100%, the ZyXEL Device is
running at full load, and the throughput is not going to improve anymore. If you
want some applications to have more throughput, you should turn off other
applications (for example, using QoS; see Chapter 14 on page 159).
Memory
Usage
This field displays what percentage of the ZyXEL Device’s memory is currently
used. Usually, this percentage should not increase much. If memory usage does
get close to 100%, the ZyXEL Device is probably becoming unstable, and you
should restart the device. See Section 20.4 on page 208, or turn off the device
(unplug the power) for a few seconds.
Interface Status
Interface
This column displays each interface the ZyXEL Device has.
Status
This field indicates whether or not the ZyXEL Device is using the interface.
For the DSL interface, this field displays Down (line is down), Up (line is up or
connected) if you're using Ethernet encapsulation and Down (line is down), Up
(line is up or connected), Idle (line (ppp) idle), Dial (starting to trigger a call)
and Drop (dropping a call) if you're using PPPoE encapsulation.
For the LAN interface, this field displays Up when the ZyXEL Device is using the
interface and Down when the ZyXEL Device is not using the interface.
For the WLAN interface, it displays Active when WLAN is enabled or InActive
when WLAN is disabled.
Rate
For the LAN interface, this displays the port speed and duplex setting.
For the DSL interface, it displays the downstream and upstream transmission
rate.
For the WLAN interface, it displays the maximum transmission rate when WLAN
is enabled or N/A when WLAN is disabled.
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Tutorials
4.1 Overview
This chapter shows you how to use the ZyXEL Device’s various features.
• Setting Up a Secure Wireless Network, see page 37
• Configuring the MAC Address Filter, see page 44
• Configuring Static Route for Routing to Another Network, see page 46
• Multiple Public and Private IP Address Mappings, see page 49
• Multiple WAN Connections Example, see page 52
4.2 Setting Up a Secure Wireless Network
Thomas wants to set up a wireless network so that he can use his notebook to access the Internet.
In this wireless network, the ZyXEL Device serves as an access point (AP), and the notebook is the
wireless client. The wireless client can access the Internet through the AP.
Thomas has to configure the wireless network settings on the ZyXEL Device. Then he can set up a
wireless network using WPS (Section 4.2.2 on page 38) or manual configuration (Section 4.2.3 on
page 42).
4.2.1 Configuring the Wireless Network Settings
This example uses the following parameters to set up a wireless network.
SSID
Example
Security Mode
WPA-PSK
Pre-Shared Key
DoNotStealMyWirelessNetwork
802.11 Mode
802.11b+g+n
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Click Network > Wireless LAN to open the AP screen. Configure the screen using the provided
parameters (see page 37). Click Apply.
Click the Advanced Setup button and select 802.11b+g+n in the 802.11 Mode field. Click
Apply.
Thomas can now use the WPS feature to establish a wireless connection between his notebook and
the ZyXEL Device (see Section 4.2.2 on page 38). He can also use the notebook’s wireless client to
search for the ZyXEL Device (see Section 4.2.3 on page 42).
4.2.2 Using WPS
This section shows you how to set up a wireless network using WPS. It uses the ZyXEL Device as
the AP and ZyXEL NWD210N as the wireless client which connects to the notebook.
Note: The wireless client must be a WPS-aware device (for example, a WPS USB adapter
or PCMCIA card).
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There are two WPS methods to set up the wireless client settings:
• Push Button Configuration (PBC) - simply press a button. This is the easier of the two
methods.
• PIN Configuration - configure a Personal Identification Number (PIN) on the ZyXEL Device. A
wireless client must also use the same PIN in order to download the wireless network settings
from the ZyXEL Device.
Push Button Configuration (PBC)
Make sure that your ZyXEL Device is turned on and your notebook is within the cover range of the
wireless signal.
Make sure that you have installed the wireless client driver and utility in your notebook.
In the wireless client utility, go to the WPS setting page. Enable WPS and press the WPS button
(Start or WPS button).
Push and hold the WPS button located on the ZyXEL Device’s rear panel for more than 5 seconds.
Alternatively, you may log into ZyXEL Device’s web configurator and click the Push Button in the
Network > Wireless LAN > WPS Station screen.
Note: Your ZyXEL Device has a WPS button located on its rear panel as well as a WPS
button in its configuration utility. Both buttons have exactly the same function: you
can use one or the other.
Note: It doesn’t matter which button is pressed first. You must press the second button
within two minutes of pressing the first one.
The ZyXEL Device sends the proper configuration settings to the wireless client. This may take up to
two minutes. The wireless client is then able to communicate with the ZyXEL Device securely.
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The following figure shows you an example of how to set up a wireless network and its security by
pressing a button on both ZyXEL Device and wireless client.
Example WPS Process: PBC Method
ZyXEL Device
Wireless Client
WITHIN 2 MINUTES
Press and hold for
5 seconds
SECURITY INFO
COMMUNICATION
PIN Configuration
When you use the PIN configuration method, you need to use both the ZyXEL Device’s web
configurator and the wireless client’s utility.
40
Launch your wireless client’s configuration utility. Go to the WPS settings and select the PIN method
to get a PIN number.
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Enter the PIN number in the PIN field in the Network > Wireless LAN > WPS Station screen on
the ZyXEL Device.
Click the Start buttons (or the button next to the PIN field) on both the wireless client utility screen
and the ZyXEL Device’s WPS Station screen within two minutes.
The ZyXEL Device authenticates the wireless client and sends the proper configuration settings to
the wireless client. This may take up to two minutes. The wireless client is then able to
communicate with the ZyXEL Device securely.
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The following figure shows you how to set up a wireless network and its security on a ZyXEL Device
and a wireless client by using PIN method.
Example WPS Process: PIN Method
Wireless Client
ZyXEL Device
WITHIN 2 MINUTES
Authentication by PIN
SECURITY INFO
COMMUNICATION
4.2.3 Without WPS
Use the wireless adapter’s utility installed on the notebook to search for the “Example” SSID. Then
enter the “DoNotStealMyWirelessNetwork” pre-shared key to establish an wireless Internet
connection.
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Note: The ZyXEL Device supports IEEE 802.11b and IEEE 802.11g wireless clients. Make
sure that your notebook or computer’s wireless adapter supports one of these
standards.
4.2.4 Setting Up Wireless Network Scheduling
Thomas mostly uses his notebook to access the Internet on weekends; occasionally he uses it at
night on weekdays. Here is how Thomas can set up a schedule to turn on the wireless network at
specific time and days.
Click Network > Wireless Network > Scheduling to open the following screen.
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Configure the screen as follows. Turn on the wireless network from Mondays to Fridays between
18:00 and 23:30. Turn on the wireless network all day on Saturdays and Sundays. Click Apply.
4.3 Configuring the MAC Address Filter
Thomas noticed that his daughter Josephine spends too much time surfing the web and
downloading media files. He decided to prevent Josephine from accessing the Internet so that she
can concentrate on preparing for her final exams.
Josephine’s computer connects wirelessly to the Internet through the ZyXEL Device. Thomas can
deny access to the wireless network using the MAC address of Josephine’s computer.
Thomas
Josephine
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Click Network > LAN > Client List to open the following screen. Look for the MAC address of
Josephine’s computer.
Click Network > Wireless LAN to open the AP screen. Click the Edit button in the MAC Filter
field.
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Select Active MAC Filter and Deny Filter Action. Enter the MAC address you found in the Client
List screen. Click Apply.
Josephine will no longer be able to access the Internet through the ZyXEL Device.
4.4 Configuring Static Route for Routing to Another
Network
In order to extend your Intranet and control traffic flowing directions, you may connect a router to
the ZyXEL Device’s LAN. The router may be used to separate two department networks. This
tutorial shows how to configure a static routing rule for two network routings.
In the following figure, router R is connected to the ZyXEL Device’s LAN. R connects to two
networks, N1 (192.168.1.x/24) and N2 (192.168.10.x/24). If you want to send traffic from
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computer A (in N1 network) to computer B (in N2 network), the traffic is sent to the ZyXEL
Device’s WAN default gateway by default. In this case, B will never receive the traffic.
N1
N2
You need to specify a static routing rule on the ZyXEL Device to specify R as the router in charge of
forwarding traffic to N2. In this case, the ZyXEL Device routes traffic from A to R and then R routes
the traffic to B.
N1
N2
This tutorial uses the following example IP settings:
Table 5 IP Settings in this Tutorial
DEVICE / COMPUTER
IP ADDRESS
The ZyXEL Device’s WAN
172.16.1.1
The ZyXEL Device’s LAN
192.168.1.1
192.168.1.34
R’s N1
192.168.1.253
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Table 5 IP Settings in this Tutorial
DEVICE / COMPUTER
IP ADDRESS
R’s N2
192.168.10.2
192.168.10.33
To configure a static route to route traffic from N1 to N2:
Log into the ZyXEL Device’s Web Configurator in advanced mode.
Click Advanced > Static Route.
Click Edit on a new rule in the Static Route screen.
Configure the Static Route Setup screen using the following settings:
4a
Type 192.168.10.0 and subnet mask 255.255.255.0 for the destination, N2.
4b
Type 192.168.1.253 (R’s N1 address) in the Gateway IP Address field.
4a
Click Apply.
Now B should be able to receive traffic from A. You may need to additionally configure B’s firewall
settings to allow specific traffic to pass through.
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4.5 Multiple Public and Private IP Address Mappings
If your ISP gives you more than one static IP address for your Internet access, you can map each IP
address for a specific service. This tutorial assumes you are given two static public IP addresses.
You want to map them to two servers A and B.
IP-1
IP-2
This tutorial uses the following example settings:
Table 6 IP Settings in this Tutorial
DEVICE / COMPUTER
IP ADDRESS
The ZyXEL Device’s WAN
172.16.1.253 (IP-1)
172.16.1.254 (IP-2)
The ZyXEL Device’s LAN
192.168.1.1
192.168.1.2
192.168.1.3
a.b.c.d
To do this, you can use either of the following settings:
• Full Feature NAT with many-to-many no overload mapping
• Full Feature NAT with one-to-one mapping
4.5.1 Full Feature NAT + Many-to-Many No Overload Mapping
Use this setting if your applications can use random public IP addresses and the applications are
initiated from the Intranet computers (A and B). For example, VoIP application. See Section 4.5.2
on page 51 if it is not.
IP-1
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To configure this:
Click Network > NAT.
Select Active Network Address Translation(NAT) and Full Feature in the General screen.
Click Apply.
Click the Address Mapping tab, and then click the Edit icon on a new rule.
Configure the rule using the following settings:
• Type: Many-to-Many No Overload
• Local IP addresses: 192.168.1.2 ~ 192.168.1.3
• Global IP addresses: 172.16.1.253 ~ 172.16.1.254
Then click Apply.
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4.5.2 Full Feature NAT + One-to-One Mapping
Use this setting if your applications must use fixed public IP addresses and the applications can be
initiated either from the Intranet computers (A and B) or the Internet computer (C). For example,
gaming application.
IP-1
To configure this setting:
Click Network > NAT.
Select Active Network Address Translation(NAT) and Full Feature in the General screen.
Click Apply.
Click the Address Mapping tab, click the Edit icon on a new rule.
Configure two rules for the one-to-one mappings:
• Rule 1 (This maps the public IP address 172.16.1.253 to the private IP address 192.168.1.2)
Type: One-to-One
Local Start IP: 192.168.1.2
Global Start IP: 172.16.1.253
• Rule 2 (This maps the public IP address 172.16.1.254 to the private IP address 192.168.1.3)
Type: One-to-One
Local Start IP: 192.168.1.3
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Global Start IP: 172.16.1.254
Click Apply on each of the screens.
4.6 Multiple WAN Connections Example
This example shows an application for multiple WAN connections.
Your ISP may configure more than one WAN connection on the ZyXEL Device to record traffic
statistics or calculate service charges.
In Figure 9, three WAN connections are configured over the ADSL line:
• The connection with VPI/VCI, 0/33, is dedicated for Media-On-Demand (MOD) service.
• The connection with VPI/VCI, 0/34, is dedicated for VoIP service.
• The connection with VPI/VCI, 0/35, is dedicated for general data transmission.
Figure 9 Example for Multiple WAN Connections
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Internet and Wireless Setup Wizard
5.1 Overview
Use the wizard setup screens to configure your system for Internet access with the information
given to you by your ISP.
Note: See the advanced menu chapters for background information on these fields.
5.2 Internet Access Wizard Setup
After you enter the password to access the web configurator, select Go to Wizard setup and click
Apply. Otherwise, click the wizard icon (
) in the top right corner of the web configurator to go
to the wizards.
Figure 10 Select a Mode
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Click INTERNET/WIRELESS SETUP to configure the system for Internet access and wireless
connection.
Figure 11 Wizard Welcome
Your ZyXEL device attempts to detect your DSL connection and your connection type.
3a
The following screen appears if a connection is not detected. Check your hardware connections
and click Restart the INTERNET/WIRELESS SETUP Wizard to return to the wizard welcome
screen. If you still cannot connect, click Manually configure your Internet connection.
Follow the directions in the wizard and enter your Internet setup information as provided to you
by your ISP. See Section 5.2.1 on page 58 for more details.
If you would like to skip your Internet setup and configure the wireless LAN settings, leave Yes
selected and click Next.
Figure 12 Auto Detection: No DSL Connection
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3b
The following screen displays if a PPPoE or PPPoA connection is detected. Enter your Internet
account information (username, password and/or service name) exactly as provided by your
ISP. Then click Next and see Section 5.3 on page 63 for wireless connection wizard setup.
Figure 13 Auto-Detection: PPPoE
3c
The following screen appears if the ZyXEL device detects a connection but not the connection
type. Click Next and refer to Section 5.2.1 on page 58 on how to manually configure the ZyXEL
Device for Internet access.
Figure 14 Auto Detection: Failed
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Chapter 5 Internet and Wireless Setup Wizard
5.2.1 Manual Configuration
If the ZyXEL Device fails to detect your DSL connection type but the physical line is connected,
enter your Internet access information in the wizard screen exactly as your service provider gave it
to you. Leave the defaults in any fields for which you were not given information.
Figure 15 Internet Access Wizard Setup: ISP Parameters
The following table describes the fields in this screen.
Table 7 Internet Access Wizard Setup: ISP Parameters
LABEL
DESCRIPTION
Mode
Select Routing (default) from the drop-down list box if your ISP give you one IP
address only and you want multiple computers to share an Internet account. Select
Bridge when your ISP provides you more than one IP address and you want the
connected computers to get individual IP address from ISP’s DHCP server directly.
If you select Bridge, you cannot use Firewall, DHCP server and NAT on the ZyXEL
Device.
Encapsulation
Select the encapsulation type your ISP uses from the Encapsulation drop-down
list box. Choices vary depending on what you select in the Mode field.
If you select Bridge in the Mode field, select either PPPoA or RFC 1483.
If you select Routing in the Mode field, select PPPoA, RFC 1483, ENET ENCAP
or PPPoE.
58
Multiplexing
Select the multiplexing method used by your ISP from the Multiplex drop-down list
box either VC-based or LLC-based.
Virtual Circuit
ID
VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual
circuit. Refer to the appendix for more information.
VPI
Enter the VPI assigned to you. This field may already be configured.
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Table 7 Internet Access Wizard Setup: ISP Parameters
LABEL
DESCRIPTION
VCI
Enter the VCI assigned to you. This field may already be configured.
Back
Click this to return to the previous screen without saving.
Next
Click this to continue to the next wizard screen. The next wizard screen you see
depends on what protocol you chose above.
Exit
Click this to close the wizard screen without saving.
The next wizard screen varies depending on what mode and encapsulation type you use. All screens
shown are with routing mode. Configure the fields and click Next to continue. See Section 5.3 on
page 63 for wireless connection wizard setup
Figure 16 Internet Connection with PPPoE
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The following table describes the fields in this screen.
Table 8
LABEL
DESCRIPTION
User Name
Enter the user name exactly as your ISP assigned. If assigned a name in the form
user@domain where domain identifies a service name, then enter both components
exactly as given.
Password
Enter the password associated with the user name above.
Service Name
Type the name of your PPPoE service here.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Exit
Click this to close the wizard screen without saving.
Figure 17
60
Internet Connection with PPPoE
Internet Connection with RFC 1483
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The following table describes the fields in this screen.
Table 9 Internet Connection with RFC 1483
LABEL
DESCRIPTION
IP Address
This field is available if you select Routing in the Mode field.
Type your ISP assigned IP address in this field.
Back
Click this to return to the previous screen without saving.
Next
Click this to continue to the next wizard screen.
Exit
Click this to close the wizard screen without saving.
Figure 18 Internet Connection with ENET ENCAP
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The following table describes the fields in this screen.
Table 10 Internet Connection with ENET ENCAP
LABEL
DESCRIPTION
Obtain an IP
Address
Automatically
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address is not
fixed; the ISP assigns you a different one each time you connect to the Internet.
Static IP
Address
Select Static IP Address if your ISP gave you an IP address to use.
IP Address
Enter your ISP assigned IP address.
Subnet Mask
Enter a subnet mask in dotted decimal notation.
Select Obtain an IP Address Automatically if you have a dynamic IP address.
Refer to the appendix to calculate a subnet mask If you are implementing
subnetting.
Gateway IP
address
You must specify a gateway IP address (supplied by your ISP) when you use ENET
ENCAP in the Encapsulation field in the previous screen.
First DNS
Server
Enter the IP addresses of the DNS servers. The DNS servers are passed to the
DHCP clients along with the IP address and the subnet mask.
Second DNS
Server
As above.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Exit
Click this to close the wizard screen without saving.
Figure 19 Internet Connection with PPPoA
The following table describes the fields in this screen.
Table 11 Internet Connection with PPPoA
62
LABEL
DESCRIPTION
User Name
Enter the login name that your ISP gives you.
Password
Enter the password associated with the user name above.
Back
Click this to return to the previous screen without saving.
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Table 11 Internet Connection with PPPoA (continued)
LABEL
DESCRIPTION
Apply
Click this to save your changes.
Exit
Click this to close the wizard screen without saving.
• If the user name and/or password you entered for PPPoE or PPPoA connection are not correct,
the screen displays as shown next. Click Back to Username and Password setup to go back
to the screen where you can modify them.
Figure 20 Connection Test Failed-1
• If the following screen displays, check if your account is activated or click Restart the Internet/
Wireless Setup Wizard to verify your Internet access settings.
Figure 21 Connection Test Failed-2.
5.3 Wireless Connection Wizard Setup
After you configure the Internet access information, use the following screens to set up your
wireless LAN.
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Select Yes and click Next to configure wireless settings. Otherwise, select No and skip to Step 6.
Figure 22 Connection Test Successful
Use this screen to activate the wireless LAN. Click Next to continue.
Figure 23 Wireless LAN Setup Wizard 1
The following table describes the labels in this screen.
Table 12 Wireless LAN Setup Wizard 1
64
LABEL
DESCRIPTION
Active
Select the check box to turn on the wireless LAN.
Back
Click this to return to the previous screen without saving.
Next
Click this to continue to the next wizard screen.
Exit
Click this to close the wizard screen without saving.
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Configure your wireless settings in this screen. Click Next.
Figure 24 Wireless LAN
The following table describes the labels in this screen.
Table 13 Wireless LAN Setup Wizard 2
LABEL
DESCRIPTION
Network
Name(SSID)
Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless
LAN.
If you change this field on the ZyXEL Device, make sure all wireless stations use the
same SSID in order to access the network.
Channel
Selection
The range of radio frequencies used by IEEE 802.11b/g wireless devices is called a
channel. Select a channel ID that is not already in use by a neighboring device.
Security
Select Manually assign a WPA-PSK key to configure a Pre-Shared Key (WPAPSK). Choose this option only if your wireless clients support WPA. See Section 5.3.1
on page 66 for more information.
Select Manually assign a WEP key to configure a WEP Key. See Section 5.3.2 on
page 66 for more information.
Select Disable wireless security to have no wireless LAN security configured and
your network is accessible to any wireless networking device that is within range.
Back
Click this to return to the previous screen without saving.
Next
Click this to continue to the next wizard screen.
Exit
Click this to close the wizard screen without saving.
Note: The wireless stations and ZyXEL Device must use the same SSID, channel ID and
WEP encryption key (if WEP is enabled), WPA-PSK (if WPA-PSK is enabled) for
wireless communication.
This screen varies depending on the security mode you selected in the previous screen. Fill in the
field (if available) and click Next.
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5.3.1 Manually Assign a WPA-PSK key
Choose Manually assign a WPA-PSK key in the Wireless LAN setup screen to set up a PreShared Key.
Figure 25 Manually Assign a WPA-PSK key
The following table describes the labels in this screen.
Table 14 Manually Assign a WPA-PSK key
LABEL
DESCRIPTION
Pre-Shared
Key
Type from 8 to 63 case-sensitive ASCII characters. You can set up the most secure
wireless connection by configuring WPA in the wireless LAN screens. You need to
configure an authentication server to do this.
Back
Click this to return to the previous screen without saving.
Next
Click this to continue to the next wizard screen.
Exit
Click this to close the wizard screen without saving.
5.3.2 Manually Assign a WEP Key
Choose Manually assign a WEP key to setup WEP Encryption parameters.
Figure 26 Manually Assign a WEP key
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The following table describes the labels in this screen.
Table 15 Manually Assign a WEP key
LABEL
DESCRIPTION
Key
The WEP keys are used to encrypt data. Both the ZyXEL Device and the wireless
stations must use the same WEP key for data transmission.
Enter any 5 or 13 ASCII characters, or 10 or 26 hexadecimal characters ("0-9", "AF") for a 64-bit or 128-bit WEP key respectively.
Back
Click this to return to the previous screen without saving.
Next
Click this to continue to the next wizard screen.
Exit
Click this to close the wizard screen without saving.
Click Apply to save your wireless LAN settings.
Figure 27 Wireless LAN Setup 3
Use the read-only summary table to check whether what you have configured is correct. Click
Finish to complete and save the wizard setup.
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Note: No wireless LAN settings display if you chose not to configure wireless LAN
settings.
Figure 28 Internet Access and WLAN Wizard Setup Complete
68
Launch your web browser and navigate to www.zyxel.com. Internet access is just the beginning.
Refer to the rest of this guide for more detailed information on the complete range of ZyXEL Device
features. If you cannot access the Internet, open the web configurator again to confirm that the
Internet settings you configured in the wizard setup are correct.
AMG1202-T10A User’s Guide
C HAPT ER
WAN Setup
6.1 Overview
This chapter describes how to configure WAN settings from the WAN screens. Use these screens to
configure your ZyXEL Device for Internet access.
A WAN (Wide Area Network) connection is an outside connection to another network or the
Internet. It connects your private networks (such as a LAN (Local Area Network) and other
networks, so that a computer in one location can communicate with computers in other locations.
Figure 29 LAN and WAN
LAN
WAN
6.1.1 What You Can Do in the WAN Screens
• Use the Internet Access Setup screen (Section 6.2 on page 71) to configure the WAN settings
on the ZyXEL Device for Internet access.
• Use the More Connections screen (Section 6.3 on page 74) to set up additional Internet access
connections.
6.1.2 What You Need to Know About WAN
Encapsulation Method
Encapsulation is used to include data from an upper layer protocol into a lower layer protocol. To set
up a WAN connection to the Internet, you need to use the same encapsulation method used by your
ISP (Internet Service Provider). If your ISP offers a dial-up Internet connection using PPPoE (PPP
over Ethernet) or PPPoA, they should also provide a username and password (and service name)
for user authentication.
WAN IP Address
The WAN IP address is an IP address for the ZyXEL Device, which makes it accessible from an
outside network. It is used by the ZyXEL Device to communicate with other devices in other
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networks. It can be static (fixed) or dynamically assigned by the ISP each time the ZyXEL Device
tries to access the Internet.
If your ISP assigns you a static WAN IP address, they should also assign you the subnet mask and
DNS server IP address(es) (and a gateway IP address if you use the Ethernet or ENET ENCAP
encapsulation method).
Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient)
or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of
hosts on the network - not everybody and not just one.
IGMP
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership
in a Multicast group - it is not used to carry user data. There are three versions of IGMP. IGMP
version 2 and 3 are improvements over version 1, but IGMP version 1 is still in wide use.
Finding Out More
See Section 6.4 on page 79 for technical background information on WAN.
6.1.3 Before You Begin
You need to know your Internet access settings such as encapsulation and WAN IP address. Get this
information from your ISP.
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6.2 The Internet Access Setup Screen
Use this screen to change your ZyXEL Device’s WAN settings. Click Network > WAN > Internet
Access Setup. The screen differs by the WAN type and encapsulation you select.
Figure 30 Network > WAN >Internet Access Setup (PPPoE)
The following table describes the labels in this screen.
Table 16 Network > WAN > Internet Access Setup
LABEL
DESCRIPTION
Line
ADSL Mode
Select the mode supported by your ISP.
Use Auto Sync-Up if you are not sure which mode to choose from. The ZyXEL
Device dynamically diagnoses the mode supported by the ISP and selects the
best compatible one for your connection.
Other options are ADSL2+, ADSL2, G.DMT, T1.413 and G.lite.
ADSL Type
Select the type supported by your ISP.
Available options are ANNEX A, ANNEX A/L, ANNEX M and ANNEX A/L/M.
General
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Table 16 Network > WAN > Internet Access Setup (continued)
LABEL
DESCRIPTION
Mode
Select Routing (default) from the drop-down list box if your ISP gives you one
IP address only and you want multiple computers to share an Internet account.
Select Bridge when your ISP provides you more than one IP address and you
want the connected computers to get individual IP address from ISP’s DHCP
server directly. If you select Bridge, you cannot use Firewall, DHCP server and
NAT on the ZyXEL Device.
Encapsulation
Select the method of encapsulation used by your ISP from the drop-down list
box. Choices vary depending on the mode you select in the Mode field.
If you select Bridge in the Mode field, select either PPPoA or RFC 1483.
If you select Routing in the Mode field, select PPPoA, RFC 1483, ENET
ENCAP or PPPoE.
User Name
(PPPoA and PPPoE encapsulation only) Enter the user name exactly as your ISP
assigned. If assigned a name in the form user@domain where domain
identifies a service name, then enter both components exactly as given.
Password
(PPPoA and PPPoE encapsulation only) Enter the password associated with the
user name above.
Service Name
(PPPoE only) Type the name of your PPPoE service here.
Multiplexing
Select the method of multiplexing used by your ISP from the drop-down list.
Choices are VC or LLC.
Virtual Circuit ID
VPI (Virtual Path Identifier) and VCI (Virtual Channel Identifier) define a virtual
circuit. Refer to the appendix for more information.
This field is not available if you set the WAN type to Ethernet.
These fields are not available if you set the WAN type to Ethernet.
VPI
The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.
VCI
The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local
management of ATM traffic). Enter the VCI assigned to you.
IP Address
This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP address
is not fixed; the ISP assigns you a different one each time you connect to the
Internet.
Select Obtain an IP Address Automatically if you have a dynamic IP
address; otherwise select Static IP Address and type your ISP assigned IP
address in the IP Address field below.
Subnet Mask
This option is available if you select ENET ENCAP in the Encapsulation field.
Enter a subnet mask in dotted decimal notation.
ENET ENCAP
Gateway
This option is available if you select ENET ENCAP in the Encapsulation field.
Specify a gateway IP address (supplied by your ISP).
Connection (PPPoA and PPPoE encapsulation only)
72
Keep Alive
Select Keep Alive when you want your connection up all the time. The ZyXEL
Device will try to bring up the connection automatically if it is disconnected.
Connect on
Demand
Select Connect on Demand when you don't want the connection up all the
time and specify an idle time-out in the Max Idle Timeout field.
Max Idle Timeout
Specify an idle time-out in the Max Idle Timeout field when you select
Connect on Demand. The default setting is 0, which means the Internet
session will not timeout.
Apply
Click this to save your changes.
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Table 16 Network > WAN > Internet Access Setup (continued)
LABEL
DESCRIPTION
Cancel
Click this to restore your previously saved settings.
Advanced Setup
Click this to display the Advanced WAN Setup screen and edit more details
of your WAN setup.
6.2.1 Advanced Internet Access Setup
Use this screen to edit your ZyXEL Device's advanced WAN settings. Click the Advanced Setup
button in the Internet Access Setup screen. The screen appears as shown.
Figure 31 Network > WAN > Internet Access Setup: Advanced Setup
The following table describes the labels in this screen.
Table 17 Network > WAN > Internet Access Setup: Advanced Setup
LABEL
DESCRIPTION
RIP & Multicast
Setup
This section is not available when you configure the ZyXEL Device to be in
bridge mode.
RIP Direction
RIP (Routing Information Protocol) allows a router to exchange routing
information with other routers. Use this field to control how much routing
information the ZyXEL Device sends and receives on the subnet.
Select the RIP direction from None, Both, In Only and Out Only.
RIP Version
This field is not configurable if you select None in the RIP Direction field.
Select the RIP version from RIP-1, RIP-2B and RIP-2M.
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Table 17 Network > WAN > Internet Access Setup: Advanced Setup (continued)
LABEL
DESCRIPTION
Multicast
Multicast packets are sent to a group of computers on the LAN and are an
alternative to unicast packets (packets sent to one computer) and broadcast
packets (packets sent to every computer).
Internet Group Multicast Protocol (IGMP) is a network-layer protocol used to
establish membership in a multicast group. The ZyXEL Device supports IGMPv1, IGMP-v2 and IGMP-v3. Select None to disable it.
ATM QoS
ATM QoS Type
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth for
voice or data traffic. Select UBR (Unspecified Bit Rate) for applications that are
non-time sensitive, such as e-mail. Select rtVBR (real-time Variable Bit Rate)
type for applications with bursty connections that require closely controlled
delay and delay variation. Select nrtVBR (non real-time Variable Bit Rate) type
for connections that do not require closely controlled delay and delay variation.
Peak Cell Rate
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the Peak
Cell Rate (PCR). This is the maximum rate at which the sender can send cells.
Type the PCR here.
Sustain Cell
Rate
The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that can be
transmitted. Type the SCR, which must be less than the PCR. Note that system
default is 0 cells/sec.
Maximum Burst
Size
Maximum Burst Size (MBS) refers to the maximum number of cells that can be
sent at the peak rate. Type the MBS, which is less than 65535.
MTU
MTU
The Maximum Transmission Unit (MTU) defines the size of the largest packet
allowed on an interface or connection. Enter the MTU in this field.
For ENET ENCAP, the MTU value is 1500.
For PPPoE, the MTU value is 1492.
For PPPoA and RFC 1483, the MTU is 65535.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
6.3 The More Connections Screen
The ZyXEL Device allows you to configure more than one Internet access connection. To configure
additional Internet access connections click Network > WAN > More Connections. The screen
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differs by the encapsulation you select. When you use the WAN > Internet Access Setup screen
to set up Internet access, you are configuring the first WAN connection.
Figure 32 Network > WAN > More Connections
The following table describes the labels in this screen.
Table 18 Network > WAN > More Connections
LABEL
DESCRIPTION
This is an index number indicating the number of the corresponding connection.
Active
This field indicates whether the connection is active or not.
Clear the check box to disable the connection. Select the check box to enable it.
Name
This is the name you gave to the Internet connection.
VPI/VCI
This field displays the Virtual Path Identifier (VPI) and Virtual Channel Identifier
(VCI) numbers configured for this WAN connection.
Encapsulation
This field indicates the encapsulation method of the Internet connection.
Modify
The first (ISP) connection is read-only in this screen. Use the WAN > Internet
Access Setup screen to edit it.
Click the Edit icon to edit the Internet connection settings. Click this icon on an
empty configuration to add a new Internet access setup.
Click the Remove icon to delete the Internet access setup from your connection
list.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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6.3.1 More Connections Edit
Use this screen to configure a connection. Click the edit icon in the More Connections screen to
display the following screen.
Figure 33 Network > WAN > More Connections: Edit
The following table describes the labels in this screen.
Table 19 Network > WAN > More Connections: Edit
LABEL
DESCRIPTION
General
Active
Select the check box to activate or clear the check box to deactivate this
connection.
Name
Enter a unique, descriptive name of up to 13 ASCII characters for this
connection.
Mode
Select Routing from the drop-down list box if your ISP allows multiple
computers to share an Internet account.
If you select Bridge, the ZyXEL Device will forward any packet that it
does not route to this remote node; otherwise, the packets are discarded.
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Table 19 Network > WAN > More Connections: Edit (continued)
LABEL
DESCRIPTION
Encapsulation
Select the method of encapsulation used by your ISP from the drop-down
list box. Choices vary depending on the mode you select in the Mode
field.
If you select Bridge in the Mode field, select either PPPoA or RFC 1483.
If you select Routing in the Mode field, select PPPoA, RFC 1483, ENET
ENCAP or PPPoE.
Multiplexing
Select the method of multiplexing used by your ISP from the drop-down
list. Choices are VC or LLC.
By prior agreement, a protocol is assigned a specific virtual circuit, for
example, VC1 will carry IP. If you select VC, specify separate VPI and VCI
numbers for each protocol.
For LLC-based multiplexing or PPP encapsulation, one VC carries multiple
protocols with protocol identifying information being contained in each
packet header. In this case, only one set of VPI and VCI numbers need be
specified for all protocols.
VPI
The valid range for the VPI is 0 to 255. Enter the VPI assigned to you.
VCI
The valid range for the VCI is 32 to 65535 (0 to 31 is reserved for local
management of ATM traffic). Enter the VCI assigned to you.
IP Address
This option is available if you select Routing in the Mode field.
A static IP address is a fixed IP that your ISP gives you. A dynamic IP
address is not fixed; the ISP assigns you a different one each time you
connect to the Internet.
If you use the encapsulation type except RFC 1483, select Obtain an IP
Address Automatically when you have a dynamic IP address; otherwise
select Static IP Address and type your ISP assigned IP address in the IP
Address field below.
If you use RFC 1483, enter the IP address given by your ISP in the IP
Address field.
Subnet Mask
This option is available if you select ENET ENCAP in the Encapsulation
field.
Enter a subnet mask in dotted decimal notation.
ENET ENCAP
Gateway
This option is available if you select ENET ENCAP in the Encapsulation
field.
Specify a gateway IP address (supplied by your ISP).
Connection
Nailed-Up Connection
Select Nailed-Up Connection when you want your connection up all the
time. The ZyXEL Device will try to bring up the connection automatically if
it is disconnected.
Connect on Demand
Select Connect on Demand when you don't want the connection up all
the time and specify an idle time-out in the Max Idle Timeout field.
Max Idle Timeout
Specify an idle time-out in the Max Idle Timeout field when you select
Connect on Demand. The default setting is 0, which means the Internet
session will not timeout.
NAT
SUA only is available only when you select Routing in the Mode field.
Select SUA Only if you have one public IP address and want to use NAT.
Click Edit Detail to go to the Port Forwarding screen to edit a server
mapping set.
Otherwise, select None to disable NAT.
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Table 19 Network > WAN > More Connections: Edit (continued)
LABEL
DESCRIPTION
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
Advanced Setup
Click this to display the More Connections Advanced Setup screen and
edit more details of your WAN setup.
6.3.2 Configuring More Connections Advanced Setup
Use this screen to edit your ZyXEL Device's advanced WAN settings. Click the Advanced Setup
button in the More Connections Edit screen. The screen appears as shown.
Figure 34 Network > WAN > More Connections: Edit: Advanced Setup
The following table describes the labels in this screen.
Table 20 Network > WAN > More Connections: Edit: Advanced Setup
LABEL
DESCRIPTION
ATM QoS
ATM QoS Type
Select CBR (Continuous Bit Rate) to specify fixed (always-on) bandwidth
for voice or data traffic. Select UBR (Unspecified Bit Rate) for applications
that are non-time sensitive, such as e-mail. Select nrtVBR (Variable Bit
Rate-non Real Time) or rtVBR (Variable Bit Rate-Real Time) for bursty
traffic and bandwidth sharing with other applications.
Peak Cell Rate
Divide the DSL line rate (bps) by 424 (the size of an ATM cell) to find the
Peak Cell Rate (PCR). This is the maximum rate at which the sender can
send cells. Type the PCR here.
Sustain Cell Rate
The Sustain Cell Rate (SCR) sets the average cell rate (long-term) that
can be transmitted. Type the SCR, which must be less than the PCR. Note
that system default is 0 cells/sec.
Maximum Burst Size
Maximum Burst Size (MBS) refers to the maximum number of cells that
can be sent at the peak rate. Type the MBS, which is less than 65535.
MTU
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Table 20 Network > WAN > More Connections: Edit: Advanced Setup (continued)
LABEL
DESCRIPTION
MTU
The Maximum Transmission Unit (MTU) defines the size of the largest
packet allowed on an interface or connection. Enter the MTU in this field.
For ENET ENCAP, the MTU value is 1500.
For PPPoE, the MTU value is 1492.
For PPPoA and RFC, the MTU is 65535.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
6.4 WAN Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
6.4.1 Encapsulation
Be sure to use the encapsulation method required by your ISP. The ZyXEL Device supports the
following methods.
6.4.1.1 ENET ENCAP
The MAC Encapsulated Routing Link Protocol (ENET ENCAP) is only implemented with the IP
network protocol. IP packets are routed between the Ethernet interface and the WAN interface and
then formatted so that they can be understood in a bridged environment. For instance, it
encapsulates routed Ethernet frames into bridged ATM cells. ENET ENCAP requires that you specify
a gateway IP address in the Gateway IP Address field in the wizard or WAN screen. You can get
this information from your ISP.
6.4.1.2 PPP over Ethernet
The ZyXEL Device supports PPPoE (Point-to-Point Protocol over Ethernet). PPPoE is an IETF Draft
standard (RFC 2516) specifying how a personal computer (PC) interacts with a broadband modem
(DSL, cable, wireless, etc.) connection. The PPPoE option is for a dial-up connection using PPPoE.
For the service provider, PPPoE offers an access and authentication method that works with existing
access control systems (for example RADIUS).
One of the benefits of PPPoE is the ability to let you access one of multiple network services, a
function known as dynamic service selection. This enables the service provider to easily create and
offer new IP services for individuals.
Operationally, PPPoE saves significant effort for both you and the ISP or carrier, as it requires no
specific configuration of the broadband modem at the customer site.
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By implementing PPPoE directly on the ZyXEL Device (rather than individual computers), the
computers on the LAN do not need PPPoE software installed, since the ZyXEL Device does that part
of the task. Furthermore, with NAT, all of the LANs’ computers will have access.
6.4.1.3 PPPoA
PPPoA stands for Point to Point Protocol over ATM Adaptation Layer 5 (AAL5). A PPPoA connection
functions like a dial-up Internet connection. The ZyXEL Device encapsulates the PPP session based
on RFC1483 and sends it through an ATM PVC (Permanent Virtual Circuit) to the Internet Service
Provider’s (ISP) DSLAM (Digital Subscriber Line (DSL) Access Multiplexer). Please refer to RFC 2364
for more information on PPPoA. Refer to RFC 1661 for more information on PPP.
6.4.1.4 RFC 1483
RFC 1483 describes two methods for Multiprotocol Encapsulation over ATM Adaptation Layer 5
(AAL5). The first method allows multiplexing of multiple protocols over a single ATM virtual circuit
(LLC-based multiplexing) and the second method assumes that each protocol is carried over a
separate ATM virtual circuit (VC-based multiplexing). Please refer to RFC 1483 for more detailed
information.
6.4.2 Multiplexing
There are two conventions to identify what protocols the virtual circuit (VC) is carrying. Be sure to
use the multiplexing method required by your ISP.
VC-based Multiplexing
In this case, by prior mutual agreement, each protocol is assigned to a specific virtual circuit; for
example, VC1 carries IP, etc. VC-based multiplexing may be dominant in environments where
dynamic creation of large numbers of ATM VCs is fast and economical.
LLC-based Multiplexing
In this case one VC carries multiple protocols with protocol identifying information being contained
in each packet header. Despite the extra bandwidth and processing overhead, this method may be
advantageous if it is not practical to have a separate VC for each carried protocol, for example, if
charging heavily depends on the number of simultaneous VCs.
6.4.3 VPI and VCI
Be sure to use the correct Virtual Path Identifier (VPI) and Virtual Channel Identifier (VCI) numbers
assigned to you. The valid range for the VPI is 0 to 255 and for the VCI is 32 to 65535 (0 to 31 is
reserved for local management of ATM traffic). Please see the appendix for more information.
6.4.4 IP Address Assignment
A static IP is a fixed IP that your ISP gives you. A dynamic IP is not fixed; the ISP assigns you a
different one each time. The Single User Account feature can be enabled or disabled if you have
either a dynamic or static IP. However the encapsulation method assigned influences your choices
for IP address and ENET ENCAP gateway.
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IP Assignment with PPPoA or PPPoE Encapsulation
If you have a dynamic IP, then the IP Address and Gateway IP Address fields are not applicable
(N/A). If you have a static IP, then you only need to fill in the IP Address field and not the
Gateway IP Address field.
IP Assignment with RFC 1483 Encapsulation
In this case the IP address assignment must be static.
IP Assignment with ENET ENCAP Encapsulation
In this case you can have either a static or dynamic IP. For a static IP you must fill in all the IP
Address and Gateway IP Address fields as supplied by your ISP. However for a dynamic IP, the
ZyXEL Device acts as a DHCP client on the WAN port and so the IP Address and Gateway IP
Address fields are not applicable (N/A) as the DHCP server assigns them to the ZyXEL Device.
6.4.5 Nailed-Up Connection (PPP)
A nailed-up connection is a dial-up line where the connection is always up regardless of traffic
demand. The ZyXEL Device does two things when you specify a nailed-up connection. The first is
that idle timeout is disabled. The second is that the ZyXEL Device will try to bring up the connection
when turned on and whenever the connection is down. A nailed-up connection can be very
expensive for obvious reasons.
Do not specify a nailed-up connection unless your telephone company offers flat-rate service or you
need a constant connection and the cost is of no concern.
6.4.6 NAT
NAT (Network Address Translation - NAT, RFC 1631) is the translation of the IP address of a host in
a packet, for example, the source address of an outgoing packet, used within one network to a
different IP address known within another network.
6.5 Traffic Shaping
Traffic Shaping is an agreement between the carrier and the subscriber to regulate the average rate
and fluctuations of data transmission over an ATM network. This agreement helps eliminate
congestion, which is important for transmission of real time data such as audio and video
connections.
Peak Cell Rate (PCR) is the maximum rate at which the sender can send cells. This parameter may
be lower (but not higher) than the maximum line speed. 1 ATM cell is 53 bytes (424 bits), so a
maximum speed of 832Kbps gives a maximum PCR of 1962 cells/sec. This rate is not guaranteed
because it is dependent on the line speed.
Sustained Cell Rate (SCR) is the mean cell rate of each bursty traffic source. It specifies the
maximum average rate at which cells can be sent over the virtual connection. SCR may not be
greater than the PCR.
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Maximum Burst Size (MBS) is the maximum number of cells that can be sent at the PCR. After MBS
is reached, cell rates fall below SCR until cell rate averages to the SCR again. At this time, more
cells (up to the MBS) can be sent at the PCR again.
If the PCR, SCR or MBS is set to the default of "0", the system will assign a maximum value that
correlates to your upstream line rate.
The following figure illustrates the relationship between PCR, SCR and MBS.
Figure 35 Example of Traffic Shaping
6.5.1 ATM Traffic Classes
These are the basic ATM traffic classes defined by the ATM Forum Traffic Management 4.0
Specification.
Constant Bit Rate (CBR)
Constant Bit Rate (CBR) provides fixed bandwidth that is always available even if no data is being
sent. CBR traffic is generally time-sensitive (doesn't tolerate delay). CBR is used for connections
that continuously require a specific amount of bandwidth. A PCR is specified and if traffic exceeds
this rate, cells may be dropped. Examples of connections that need CBR would be high-resolution
video and voice.
Variable Bit Rate (VBR)
The Variable Bit Rate (VBR) ATM traffic class is used with bursty connections. Connections that use
the Variable Bit Rate (VBR) traffic class can be grouped into real time (VBR-RT) or non-real time
(VBR-nRT) connections.
The VBR-RT (real-time Variable Bit Rate) type is used with bursty connections that require closely
controlled delay and delay variation. It also provides a fixed amount of bandwidth (a PCR is
specified) but is only available when data is being sent. An example of an VBR-RT connection would
be video conferencing. Video conferencing requires real-time data transfers and the bandwidth
requirement varies in proportion to the video image's changing dynamics.
The VBR-nRT (non real-time Variable Bit Rate) type is used with bursty connections that do not
require closely controlled delay and delay variation. It is commonly used for "bursty" traffic typical
on LANs. PCR and MBS define the burst levels, SCR defines the minimum level. An example of an
VBR-nRT connection would be non-time sensitive data file transfers.
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Unspecified Bit Rate (UBR)
The Unspecified Bit Rate (UBR) ATM traffic class is for bursty data transfers. However, UBR doesn't
guarantee any bandwidth and only delivers traffic when the network has spare bandwidth. An
example application is background file transfer.
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LAN Setup
7.1 Overview
A Local Area Network (LAN) is a shared communication system to which many networking devices
are connected. It is usually located in one immediate area such as a building or floor of a building.
Use the LAN screens to help you configure a LAN DHCP server and manage IP addresses.
LAN
DSL
7.1.1 What You Can Do in the LAN Screens
• Use the LAN IP screen (Section 7.2 on page 86) to set the LAN IP address and subnet mask of
your ZyXEL device. You can also edit your ZyXEL Device's RIP, multicast and Windows
Networking settings from this screen.
• Use the DHCP Setup screen (Section 7.3 on page 88) to configure the ZyXEL Device’s DHCP
settings.
• Use the Client List screen (Section 7.4 on page 89) to assign IP addresses on the LAN to specific
individual computers based on their MAC Addresses.
• Use the IP Alias screen (Section 7.5 on page 90) to change your ZyXEL Device’s IP alias
settings.
7.1.2 What You Need To Know About LAN
IP Address
IP addresses identify individual devices on a network. Every networking device (including
computers, servers, routers, printers, etc.) needs an IP address to communicate across the
network. These networking devices are also known as hosts.
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Subnet Mask
Subnet masks determine the maximum number of possible hosts on a network. You can also use
subnet masks to divide one network into multiple sub-networks.
DHCP
A DHCP (Dynamic Host Configuration Protocol) server can assign your ZyXEL Device an IP address,
subnet mask, DNS and other routing information when it's turned on.
RIP
RIP (Routing Information Protocol) allows a router to exchange routing information with other
routers.
Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient)
or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of
hosts on the network - not everybody and not just 1.
IGMP
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership
in a Multicast group - it is not used to carry user data. There are three versions of IGMP. IGMP
version 2 and 3 are improvements over version 1, but IGMP version 1 is still in wide use.
DNS
DNS (Domain Name System) is for mapping a domain name to its corresponding IP address and
vice versa. The DNS server is extremely important because without it, you must know the IP
address of a networking device before you can access it.
Finding Out More
See Section 7.6 on page 92 for technical background information on LANs.
7.1.3 Before You Begin
Find out the MAC addresses of your network devices if you intend to add them to the DHCP Client
List screen.
7.2 The LAN IP Screen
Use this screen to set the Local Area Network IP address and subnet mask of your ZyXEL Device.
Click Network > LAN to open the IP screen.
Follow these steps to configure your LAN settings.
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Enter an IP address into the IP Address field. The IP address must be in dotted decimal notation.
This will become the IP address of your ZyXEL Device.
Enter the IP subnet mask into the IP Subnet Mask field. Unless instructed otherwise it is best to
leave this alone, the configurator will automatically compute a subnet mask based upon the IP
address you entered.
Click Apply to save your settings.
Figure 36 Network > LAN > IP
The following table describes the fields in this screen.
Table 21 Network > LAN > IP
LABEL
DESCRIPTION
IP Address
Enter the LAN IP address you want to assign to your ZyXEL Device in dotted
decimal notation, for example, 192.168.1.1 (factory default).
IP Subnet Mask
Type the subnet mask of your network in dotted decimal notation, for example
255.255.255.0 (factory default). Your ZyXEL Device automatically computes
the subnet mask based on the IP Address you enter, so do not change this field
unless you are instructed to do so.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
Advanced Setup
Click this to display the Advanced LAN Setup screen and edit more details of
your LAN setup.
7.2.1 The Advanced LAN IP Setup Screen
Use this screen to edit your ZyXEL Device's RIP, multicast and Windows Networking settings. Click
the Advanced Setup button in the LAN IP screen. The screen appears as shown.
Figure 37 Network > LAN > IP: Advanced Setup
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The following table describes the labels in this screen.
Table 22 Network > LAN > IP: Advanced Setup
LABEL
DESCRIPTION
RIP & Multicast Setup
RIP Direction
Select the RIP direction from None, Both, In Only and Out Only.
RIP Version
Select the RIP version from RIP-1, RIP-2B and RIP-2M.
Multicast
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to
establish membership in a multicast group. The ZyXEL Device supports IGMPv1, IGMP-v2 and IGMP-v3. Select None to disable it.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
7.3 The DHCP Setup Screen
Use this screen to configure the DNS server information that the ZyXEL Device sends to the DHCP
client devices on the LAN. Click Network > DHCP Setup to open this screen.
Figure 38 Network > LAN > DHCP Setup
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The following table describes the labels in this screen.
Table 23 Network > LAN > DHCP Setup
LABEL
DESCRIPTION
DHCP Setup
DHCP
If set to Server, your ZyXEL Device can assign IP addresses, an IP default
gateway and DNS servers to Windows 95, Windows NT and other systems that
support the DHCP client.
If set to None, the DHCP server will be disabled.
If set to Relay, the ZyXEL Device acts as a surrogate DHCP server and relays
DHCP requests and responses between the remote server and the clients.
Enter the IP address of the actual, remote DHCP server in the Remote DHCP
Server field in this case.
When DHCP is used, the following items need to be set:
IP Pool Starting
Address
This field specifies the first of the contiguous addresses in the IP address pool.
Pool Size
This field specifies the size, or count of the IP address pool.
Remote DHCP
Server
If Relay is selected in the DHCP field above then enter the IP address of the
actual remote DHCP server here.
DNS Server
DNS Servers
Assigned by DHCP
Server
The ZyXEL Device passes a DNS (Domain Name System) server IP address to
the DHCP clients.
Primary /Secondary
DNS Server
Enter the IP address of your primary/secondary DNS server.
PORT Filter
PORT Filter by DHCP
Server
The ZyXEL Device can act as a DHCP server for DHCP clients on specific
physical ports that you can select in this section. If ports are unselected, you
must have another DHCP server on your LAN, or else the computers must be
manually configured.
Physical Port
Select the physical ports on which the ZyXEL Device should act as a DHCP
server.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
7.4 The Client List Screen
This table allows you to assign IP addresses on the LAN to specific individual computers based on
their MAC Addresses.
Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address is
assigned at the factory and consists of six pairs of hexadecimal characters, for example,
00:A0:C5:00:00:02.
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Use this screen to change your ZyXEL Device’s static DHCP settings. Click Network > LAN >
Client List to open the following screen.
Figure 39 Network > LAN > Client List
The following table describes the labels in this screen.
Table 24 Network > LAN > Client List
LABEL
DESCRIPTION
IP Address
Enter the IP address that you want to assign to the computer on your LAN with
the MAC address that you will also specify.
MAC Address
Enter the MAC address of a computer on your LAN.
Add
Click this to add a static DHCP entry.
This is the index number of the static IP table entry (row).
Status
This field displays whether the client is connected to the ZyXEL Device.
Host Name
This field displays the computer host name.
IP Address
This field displays the IP address relative to the # field listed above.
MAC Address
The MAC (Media Access Control) or Ethernet address on a LAN (Local Area
Network) is unique to your computer (six pairs of hexadecimal notation).
A network interface card such as an Ethernet adapter has a hardwired address
that is assigned at the factory. This address follows an industry standard that
ensures no other adapter has a similar address.
Reserve
Select the check box in the heading row to automatically select all check boxes
or select the check box(es) in each entry to have the ZyXEL Device always
assign the selected entry(ies)’s IP address(es) to the corresponding MAC
address(es) (and host name(s)). You can select up to 10 entries in this table.
Modify
Click the modify icon to have the IP address field editable and change it.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
Refresh
Click this to reload the DHCP table.
7.5 The IP Alias Screen
IP alias allows you to partition a physical network into different logical networks over the same
Ethernet interface. The ZyXEL Device supports three logical LAN interfaces via its single physical
Ethernet interface with the ZyXEL Device itself as the gateway for each LAN network.
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When you use IP alias, you can also configure firewall rules to control access between the LAN's
logical networks (subnets).
Note: Make sure that the subnets of the logical networks do not overlap.
The following figure shows a LAN divided into subnets A, B, and C.
Figure 40 Physical Network & Partitioned Logical Networks
A: 192.168.1.1 - 192.168.1.24
Ethernet
Interface
B: 192.168.2.1 - 192.168.2.24
C: 192.168.3.1 - 192.168.3.24
7.5.1 Configuring the LAN IP Alias Screen
Use this screen to change your ZyXEL Device’s IP alias settings. Click Network > LAN > IP Alias
to open the following screen.
Figure 41 Network > LAN > IP Alias
The following table describes the labels in this screen.
Table 25 Network > LAN > IP Alias
LABEL
DESCRIPTION
IP Alias 1
Select the check box to configure another LAN network for the ZyXEL Device.
IP Address
Enter the IP address of your ZyXEL Device in dotted decimal notation.
Alternatively, click the right mouse button to copy and/or paste the IP address.
IP Subnet Mask
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Your ZyXEL Device will automatically calculate the subnet mask based on the IP
address that you assign. Unless you are implementing subnetting, use the
subnet mask computed by the ZyXEL Device.
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Table 25 Network > LAN > IP Alias
LABEL
DESCRIPTION
RIP Direction
RIP (Routing Information Protocol, RFC 1058 and RFC 1389) allows a router to
exchange routing information with other routers. The RIP Direction field
controls the sending and receiving of RIP packets. Select the RIP direction from
Both/In Only/Out Only/None. When set to Both or Out Only, the ZyXEL
Device will broadcast its routing table periodically. When set to Both or In Only,
it will incorporate the RIP information that it receives; when set to None, it will
not send any RIP packets and will ignore any RIP packets received.
RIP Version
The RIP Version field controls the format and the broadcasting method of the
RIP packets that the ZyXEL Device sends (it recognizes both formats when
receiving). RIP-1 is universally supported but RIP-2 carries more information.
RIP-1 is probably adequate for most networks, unless you have an unusual
network topology. Both RIP-2B and RIP-2M sends the routing data in RIP-2
format; the difference being that RIP-2B uses subnet broadcasting while RIP2M uses multicasting. Multicasting can reduce the load on non-router machines
since they generally do not listen to the RIP multicast address and so will not
receive the RIP packets. However, if one router uses multicasting, then all
routers on your network must use multicasting, also. By default, RIP direction is
set to Both and the Version set to RIP-1.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
7.6 LAN Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
7.6.1 LANs, WANs and the ZyXEL Device
The actual physical connection determines whether the ZyXEL Device ports are LAN or WAN ports.
There are two separate IP networks, one inside the LAN network and the other outside the WAN
network as shown next.
Figure 42 LAN and WAN IP Addresses
LAN
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7.6.2 DHCP Setup
DHCP (Dynamic Host Configuration Protocol, RFC 2131 and RFC 2132) allows individual clients to
obtain TCP/IP configuration at start-up from a server. You can configure the ZyXEL Device as a
DHCP server or disable it. When configured as a server, the ZyXEL Device provides the TCP/IP
configuration for the clients. If you turn DHCP service off, you must have another DHCP server on
your LAN, or else the computer must be manually configured.
IP Pool Setup
The ZyXEL Device is pre-configured with a pool of IP addresses for the DHCP clients (DHCP Pool).
See the product specifications in the appendices. Do not assign static IP addresses from the DHCP
pool to your LAN computers.
7.6.3 DNS Server Addresses
DNS (Domain Name System) maps a domain name to its corresponding IP address and vice versa.
The DNS server is extremely important because without it, you must know the IP address of a
computer before you can access it. The DNS server addresses you enter when you set up DHCP are
passed to the client machines along with the assigned IP address and subnet mask.
There are two ways that an ISP disseminates the DNS server addresses.
• The ISP tells you the DNS server addresses, usually in the form of an information sheet, when
you sign up. If your ISP gives you DNS server addresses, enter them in the DNS Server fields in
the DHCP Setup screen.
• Some ISPs choose to disseminate the DNS server addresses using the DNS server extensions of
IPCP (IP Control Protocol) after the connection is up. If your ISP did not give you explicit DNS
servers, chances are the DNS servers are conveyed through IPCP negotiation. The ZyXEL Device
supports the IPCP DNS server extensions through the DNS proxy feature.
Please note that DNS proxy works only when the ISP uses the IPCP DNS server extensions. It
does not mean you can leave the DNS servers out of the DHCP setup under all circumstances. If
your ISP gives you explicit DNS servers, make sure that you enter their IP addresses in the
DHCP Setup screen.
7.6.4 LAN TCP/IP
The ZyXEL Device has built-in DHCP server capability that assigns IP addresses and DNS servers to
systems that support DHCP client capability.
IP Address and Subnet Mask
Similar to the way houses on a street share a common street name, so too do computers on a LAN
share one common network number.
Where you obtain your network number depends on your particular situation. If the ISP or your
network administrator assigns you a block of registered IP addresses, follow their instructions in
selecting the IP addresses and the subnet mask.
If the ISP did not explicitly give you an IP network number, then most likely you have a single user
account and the ISP will assign you a dynamic IP address when the connection is established. If this
is the case, it is recommended that you select a network number from 192.168.0.0 to
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192.168.255.0 and you must enable the Network Address Translation (NAT) feature of the ZyXEL
Device. The Internet Assigned Number Authority (IANA) reserved this block of addresses
specifically for private use; please do not use any other number unless you are told otherwise. Let's
say you select 192.168.1.0 as the network number; which covers 254 individual addresses, from
192.168.1.1 to 192.168.1.254 (zero and 255 are reserved). In other words, the first three numbers
specify the network number while the last number identifies an individual computer on that
network.
Once you have decided on the network number, pick an IP address that is easy to remember, for
instance, 192.168.1.1, for your ZyXEL Device, but make sure that no other device on your network
is using that IP address.
The subnet mask specifies the network number portion of an IP address. Your ZyXEL Device will
compute the subnet mask automatically based on the IP address that you entered. You don't need
to change the subnet mask computed by the ZyXEL Device unless you are instructed to do
otherwise.
Private IP Addresses
Every machine on the Internet must have a unique address. If your networks are isolated from the
Internet, for example, only between your two branch offices, you can assign any IP addresses to
the hosts without problems. However, the Internet Assigned Numbers Authority (IANA) has
reserved the following three blocks of IP addresses specifically for private networks:
• 10.0.0.0
• 172.16.0.0
— 10.255.255.255
— 172.31.255.255
• 192.168.0.0 — 192.168.255.255
You can obtain your IP address from the IANA, from an ISP or it can be assigned from a private
network. If you belong to a small organization and your Internet access is through an ISP, the ISP
can provide you with the Internet addresses for your local networks. On the other hand, if you are
part of a much larger organization, you should consult your network administrator for the
appropriate IP addresses.
Note: Regardless of your particular situation, do not create an arbitrary IP address;
always follow the guidelines above. For more information on address assignment,
please refer to RFC 1597, “Address Allocation for Private Internets” and RFC 1466,
“Guidelines for Management of IP Address Space”.
7.6.5 RIP Setup
RIP (Routing Information Protocol) allows a router to exchange routing information with other
routers. The RIP Direction field controls the sending and receiving of RIP packets. When set to:
• Both - the ZyXEL Device will broadcast its routing table periodically and incorporate the RIP
information that it receives.
• In Only - the ZyXEL Device will not send any RIP packets but will accept all RIP packets
received.
• Out Only - the ZyXEL Device will send out RIP packets but will not accept any RIP packets
received.
• None - the ZyXEL Device will not send any RIP packets and will ignore any RIP packets received.
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The Version field controls the format and the broadcasting method of the RIP packets that the
ZyXEL Device sends (it recognizes both formats when receiving). RIP-1 is universally supported;
but RIP-2 carries more information. RIP-1 is probably adequate for most networks, unless you have
an unusual network topology.
Both RIP-2B and RIP-2M sends the routing data in RIP-2 format; the difference being that RIP-2B
uses subnet broadcasting while RIP-2M uses multicasting.
7.6.6 Multicast
Traditionally, IP packets are transmitted in one of either two ways - Unicast (1 sender - 1 recipient)
or Broadcast (1 sender - everybody on the network). Multicast delivers IP packets to a group of
hosts on the network - not everybody and not just 1.
IGMP (Internet Group Multicast Protocol) is a network-layer protocol used to establish membership
in a Multicast group - it is not used to carry user data. IGMP version 2 (RFC 2236) is an
improvement over version 1 (RFC 1112) but IGMP version 1 is still in wide use. IGMP version 3
supports source filtering, reporting or ignoring traffic from specific source address to a particular
host on the network. If you would like to read more detailed information about interoperability
between IGMP version 2 and version 1, please see sections 4 and 5 of RFC 2236. The class D IP
address is used to identify host groups and can be in the range 224.0.0.0 to 239.255.255.255. The
address 224.0.0.0 is not assigned to any group and is used by IP multicast computers. The address
224.0.0.1 is used for query messages and is assigned to the permanent group of all IP hosts
(including gateways). All hosts must join the 224.0.0.1 group in order to participate in IGMP. The
address 224.0.0.2 is assigned to the multicast routers group.
The ZyXEL Device supports IGMP version 1 (IGMP-v1), IGMP version 2 (IGMP-v2) and IGMP
version 3 (IGMP-v3). At start up, the ZyXEL Device queries all directly connected networks to
gather group membership. After that, the ZyXEL Device periodically updates this information. IP
multicasting can be enabled/disabled on the ZyXEL Device LAN and/or WAN interfaces in the web
configurator (LAN; WAN). Select None to disable IP multicasting on these interfaces.
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Wireless LAN
8.1 Overview
This chapter describes how to perform tasks related to setting up and optimizing your wireless
network, including the following.
• Turning the wireless connection on or off.
• Configuring a name, wireless channel and security for the network.
• Using WiFi Protected Setup (WPS) to configure your wireless network.
• Setting up multiple wireless networks.
• Using a MAC (Media Access Control) address filter to restrict access to the wireless network.
• Setting up a Wireless Distribution System (WDS).
• Performing other performance-related wireless tasks.
8.1.1 What You Can Do in the Wireless LAN Screens
This section describes the ZyXEL Device’s Network > Wireless LAN screens. Use these screens to
set up your ZyXEL Device’s wireless connection.
• Use the AP screen (see Section 8.2 on page 99) to turn the wireless connection on or off, set up
wireless security, configure the MAC filter, and make other basic configuration changes.
• Use the More AP screen (see Section 8.3 on page 107) to set up multiple wireless networks on
your ZyXEL Device.
• Use the WPS screen (see Section 8.4 on page 108) to enable or disable WPS, generate a security
PIN (Personal Identification Number) and see information about the ZyXEL Device’s WPS status.
• Use the WPS Station (see Section 8.5 on page 110) screen to set up WPS by pressing a button
or using a PIN.
• Use the WDS screen (see Section 8.6 on page 110) to set up a Wireless Distribution System, in
which the ZyXEL Device acts as a bridge with other ZyXEL access points.
• Use the Scheduling screen (see Section 8.7 on page 112) to configure the dates/times to enable
or disable the wireless LAN.
You don’t necessarily need to use all these screens to set up your wireless connection. For example,
you may just want to set up a network name, a wireless radio channel and security in the AP
screen.
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8.1.2 What You Need to Know About Wireless
Wireless Basics
“Wireless” is essentially radio communication. In the same way that walkie-talkie radios send and
receive information over the airwaves, wireless networking devices exchange information with one
another. A wireless networking device is just like a radio that lets your computer exchange
information with radios attached to other computers. Like walkie-talkies, most wireless networking
devices operate at radio frequency bands that are open to the public and do not require a license to
use. However, wireless networking is different from that of most traditional radio communications in
that there a number of wireless networking standards available with different methods of data
encryption.
SSID
Each network must have a name, referred to as the SSID - “Service Set IDentifier”. The “service
set” is the network, so the “service set identifier” is the network’s name. This helps you identify
your wireless network when wireless networks’ coverage areas overlap and you have a variety of
networks to choose from.
MAC Address Filter
Every Ethernet device has a unique MAC (Media Access Control) address. The MAC address consists
of twelve hexadecimal characters (0-9, and A to F), and it is usually written in the following format:
“0A:A0:00:BB:CC:DD”.
The MAC address filter controls access to the wireless network. You can use the MAC address of
each wireless client to allow or deny access to the wireless network.
Finding Out More
See Section 8.8 on page 112 for advanced technical information on wireless networks.
8.1.3 Before You Start
Before you start using these screens, ask yourself the following questions. See Section 8.1.2 on
page 98 if some of the terms used here are not familiar to you.
• What wireless standards do the other wireless devices in your network support (IEEE 802.11g,
for example)? What is the most appropriate standard to use?
• What security options do the other wireless devices in your network support (WPA-PSK, for
example)? What is the strongest security option supported by all the devices in your network?
• Do the other wireless devices in your network support WPS (Wi-Fi Protected Setup)? If so, you
can set up a well-secured network very easily.
Even if some of your devices support WPS and some do not, you can use WPS to set up your
network and then add the non-WPS devices manually, although this is somewhat more
complicated to do.
• What advanced options do you want to configure, if any? If you want to configure advanced
options such as Quality of Service, ensure that you know precisely what you want to do. If you do
not want to configure advanced options, leave them as they are.
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8.2 The AP Screen
Use this screen to configure the wireless settings of your ZyXEL Device. Click Network > Wireless
LAN to open the AP screen.
Figure 43 Network > Wireless LAN > AP
The following table describes the labels in this screen.
Table 26 Network > Wireless LAN > AP
LABEL
DESCRIPTION
Wireless Setup
Enable
Wireless LAN
Click the check box to activate wireless LAN.
Channel
Selection
Set the operating frequency/channel.
Common Setup
Enable SSID
Autogeneration
Click the check box to have the ZyXEL Device generate an SSID.
Name (SSID)
The SSID (Service Set IDentity) identifies the service set with which a wireless
device is associated. Wireless devices associating to the access point (AP) must
have the same SSID. Enter a descriptive name (up to 32 printable 7-bit ASCII
characters) for the wireless LAN.
Note: If you are configuring the ZyXEL Device from a computer connected to the
wireless LAN and you change the ZyXEL Device’s SSID or WEP settings, you
will lose your wireless connection when you press Apply to confirm. You must
then change the wireless settings of your computer to match the ZyXEL
Device’s new settings.
Hide SSID
Select this check box to hide the SSID in the outgoing beacon frame so a station
cannot obtain the SSID through scanning using a site survey tool.
Security Mode
See the following sections for more details about this field.
MAC Filter
This shows whether the wireless devices with the MAC addresses listed are allowed
or denied to access the ZyXEL Device using this SSID.
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Table 26 Network > Wireless LAN > AP
LABEL
Edit
DESCRIPTION
Click this to go to the MAC Filter screen to configure MAC filter settings. See
Section 8.2.6 on page 106 for more details.
QoS
Select this check box to activate Quality of Service (QoS).
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
Advanced
Setup
Click this to display the Wireless Advanced Setup screen and edit more details of
your WLAN setup. See Section 8.2.5 on page 104 for more details.
8.2.1 No Security
In the Network > Wireless LAN > AP screen, select No Security from the Security Mode list to
allow wireless devices to communicate with the ZyXEL Device without any data encryption or
authentication.
Note: If you do not enable any wireless security on your ZyXEL Device, your network is
accessible to any wireless networking device that is within range.
Figure 44 Network > Wireless LAN > AP: No Security
The following table describes the labels in this screen.
Table 27 Network > Wireless LAN > AP: No Security
LABEL
DESCRIPTION
Security Mode
Choose No Security from the drop-down list box.
8.2.2 WEP Encryption
Use this screen to configure and enable WEP encryption. Click Network > Wireless LAN to display
the AP screen. Select Static WEP from the Security Mode list.
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Note: WEP is extremely insecure. Its encryption can be broken by an attacker, using
widely-available software. It is strongly recommended that you use a more
effective security mechanism. Use the strongest security mechanism that all the
wireless devices in your network support. For example, use WPA-PSK or WPA2-PSK
if all your wireless devices support it, or use WPA or WPA2 if your wireless devices
support it and you have a RADIUS server. If your wireless devices support nothing
stronger than WEP, use the highest encryption level available.
Figure 45 Network > Wireless LAN > AP: Static WEP
The following table describes the wireless LAN security labels in this screen.
Table 28 Network > Wireless LAN > AP: Static WEP
LABEL
DESCRIPTION
Security Mode
Choose Static WEP from the drop-down list box.
Passphrase
Enter a passphrase (up to 32 printable characters) and click Generate. The ZyXEL
Device automatically generates a WEP key.
WEP Key
The WEP key is used to encrypt data. Both the ZyXEL Device and the wireless
stations must use the same WEP key for data transmission.
If you want to manually set the WEP key, enter any 5 or 13 characters (ASCII
string) or 10 or 26 hexadecimal characters ("0-9", "A-F") for a 64-bit or 128-bit
WEP key respectively.
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8.2.3 WPA(2)-PSK
Use this screen to configure and enable WPA(2)-PSK authentication. Click Network > Wireless
LAN to display the AP screen. Select WPA-PSK or WPA2-PSK from the Security Mode list.
Figure 46 Network > Wireless LAN > AP: WPA(2)-PSK
The following table describes the wireless LAN security labels in this screen.
Table 29 Network > Wireless LAN > AP: WPA(2)-PSK
LABEL
DESCRIPTION
Security Mode
Choose WPA-PSK or WPA2-PSK from the drop-down list box.
Encryption
Select the encryption type (TKIP, AES or TKIP/AES) for data encryption.
Select TKIP if your wireless clients can all use TKIP.
Select AES if your wireless clients can all use AES.
Select TKIP/AES to allow the wireless clients to use either TKIP or AES.
Enable Key
Autogeneration
Click the check box to have the ZyXEL Device generate the Pre-Shared Key.
Pre-Shared Key
The encryption mechanisms used for WPA(2) and WPA(2)-PSK are the same.
The only difference between the two is that WPA(2)-PSK uses a simple
common password, instead of user-specific credentials.
Type a pre-shared key from 8 to 63 case-sensitive ASCII characters (including
spaces and symbols).
WPA Group Key
Update Timer
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The Group Key Update Timer is the rate at which the AP (if using WPA(2)PSK key management) or RADIUS server (if using WPA(2) key management)
sends a new group key out to all clients. The re-keying process is the WPA(2)
equivalent of automatically changing the WEP key for an AP and all stations in a
WLAN on a periodic basis.
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8.2.4 WPA(2) Authentication
Use this screen to configure and enable WPA or WPA2 authentication. Click the Wireless LAN link
under Network to display the AP screen. Select WPA, WPA2 or WPAMixed from the Security
Mode list.
Figure 47 Network > Wireless LAN > AP: WPA(2)
The following table describes the wireless LAN security labels in this screen.
Table 30 Network > Wireless LAN > AP: WPA(2)
LABEL
DESCRIPTION
Security Mode
Choose WPA or WPA2 from the drop-down list box.
Encryption
Select the encryption type (TKIP, AES or TKIP/AES) for data encryption.
Select TKIP if your wireless clients can all use TKIP.
Select AES if your wireless clients can all use AES.
Select TKIP/AES to allow the wireless clients to use either TKIP or AES.
WPA Compatible
This check box is available only when you select WPA2-PSK or WPA2 in the
Security Mode field.
Select the check box to have both WPA-PSK and WPA wireless clients be able to
communicate with the ZyXEL Device even when the ZyXEL Device is using
WPA2-PSK or WPA2.
ReAuthentication
Timer
Specify how often wireless stations have to resend usernames and passwords
in order to stay connected. Enter a time interval between 10 and 9999 seconds.
Note: If wireless station authentication is done using a RADIUS server, the
reauthentication timer on the RADIUS server has priority.
Idle Timeout
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The ZyXEL Device automatically disconnects a wireless station from the wired
network after a period of inactivity. The wireless station needs to enter the
username and password again before access to the wired network is allowed.
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Table 30 Network > Wireless LAN > AP: WPA(2)
LABEL
DESCRIPTION
WPA Group Key
Update Timer
The Group Key Update Timer is the rate at which the AP (if using WPA(2)PSK key management) or RADIUS server (if using WPA(2) key management)
sends a new group key out to all clients. The re-keying process is the WPA(2)
equivalent of automatically changing the WEP key for an AP and all stations in a
WLAN on a periodic basis.
Authentication Server
IP Address
Enter the IP address of the external authentication server in dotted decimal
notation.
Port Number
Enter the port number of the external authentication server.
You need not change this value unless your network administrator instructs you
to do so with additional information.
Shared Secret
Enter a password (up to 31 alphanumeric characters) as the key to be shared
between the external authentication server and the ZyXEL Device.
The key must be the same on the external authentication server and your
ZyXEL Device. The key is not sent over the network.
8.2.5 Wireless LAN Advanced Setup
Use this screen to configure advanced wireless settings. Click the Advanced Setup button in the
AP screen. The screen appears as shown.
See Section 8.8.2 on page 114 for detailed definitions of the terms listed in this screen.
Figure 48 Network > Wireless LAN > AP: Advanced Setup
The following table describes the labels in this screen.
Table 31 Network > Wireless LAN > AP: Advanced Setup
104
LABEL
DESCRIPTION
RTS/CTS
Threshold
Enter a value between 0 and 2432.
Fragmentation
Threshold
This is the maximum data fragment size that can be sent. Enter a value between
256 and 2432.
Output Power
Set the output power of the ZyXEL Device. If there is a high density of APs in an
area, decrease the output power to reduce interference with other APs. Select one
of the following: 100%, 75%, 50% or 25%.
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Table 31 Network > Wireless LAN > AP: Advanced Setup
LABEL
DESCRIPTION
Preamble
Select a preamble type from the drop-down list menu. Choices are Long or Short.
See the Appendix D on page 269 for more information.
802.11 Mode
Select 802.11b Only to allow only IEEE 802.11b compliant WLAN devices to
associate with the ZyXEL Device.
Select 802.11g Only to allow only IEEE 802.11g compliant WLAN devices to
associate with the ZyXEL Device.
Select 802.11b+g to allow either IEEE 802.11b or IEEE 802.11g compliant WLAN
devices to associate with the ZyXEL Device. The transmission rate of your ZyXEL
Device might be reduced.
Select 802.11n to allow only IEEE 802.11n compliant WLAN devices to associate
with the ZyXEL Device.
Select 802.11g+n to allow either IEEE 802.11g or IEEE 802.11n compliant WLAN
devices to associate with the ZyXEL Device. The transmission rate of your ZyXEL
Device might be reduced.
Select 802.11b+g+n to allow IEEE 802.11b, IEEE 802.11g or IEEE802.11n
compliant WLAN devices to associate with the ZyXEL Device. The transmission rate
of your ZyXEL Device might be reduced.
Channel
Bandwidth
Select whether the ZyXEL Device uses a wireless channel width of 20MHz or 20/
40MHz.
A standard 20MHz channel offers transfer speeds of up to 150Mbps whereas a
40MHz channel uses two standard channels and offers speeds of up to 300 Mbps.
40MHz (channel bonding or dual channel) bonds two adjacent radio channels to
increase throughput. The wireless clients must also support 40 MHz. It is often
better to use the 20 MHz setting in a location where the environment hinders the
wireless signal.
Select 20MHz if you want to lessen radio interference with other wireless devices
in your neighborhood or the wireless clients do not support channel bonding.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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8.2.6 MAC Filter
Use this screen to change your ZyXEL Device’s MAC filter settings. Click the Edit button in the AP
screen. The screen appears as shown.
Figure 49 Network > Wireless LAN > AP: MAC Address Filter
The following table describes the labels in this screen.
Table 32 Network > Wireless LAN > AP: MAC Address Filter
LABEL
DESCRIPTION
Active MAC
Filter
Select the check box to enable MAC address filtering.
Filter Action
Define the filter action for the list of MAC addresses in the MAC Address table.
Select Deny to block access to the ZyXEL Device. MAC addresses not listed will be
allowed to access the ZyXEL Device
Select Allow to permit access to the ZyXEL Device. MAC addresses not listed will be
denied access to the ZyXEL Device.
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Set
This is the index number of the MAC address.
MAC Address
Enter the MAC addresses of the wireless devices that are allowed or denied access to
the ZyXEL Device in these address fields. Enter the MAC addresses in a valid MAC
address format, that is, six hexadecimal character pairs, for example,
12:34:56:78:9a:bc.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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8.3 The More AP Screen
This screen allows you to enable and configure multiple Basic Service Sets (BSSs) on the ZyXEL
Device.
Click Network > Wireless LAN > More AP. The following screen displays.
Figure 50 Network > Wireless LAN > More AP
The following table describes the labels in this screen.
Table 33 Network > Wireless LAN > More AP
LABEL
DESCRIPTION
This is the index number of each SSID profile.
Active
This field indicates whether this SSID is active.
SSID
An SSID profile is the set of parameters relating to one of the ZyXEL Device’s
BSSs. The SSID (Service Set IDentifier) identifies the Service Set with which a
wireless device is associated.
This field displays the name of the wireless profile on the network. When a
wireless client scans for an AP to associate with, this is the name that is broadcast
and seen in the wireless client utility.
Security
This field indicates the security mode of the SSID profile.
Modify
Click the Edit icon to configure the SSID profile.
Click the Remove icon to hide the SSID in the outgoing beacon frame so a
station cannot obtain the SSID through scanning using a site survey tool.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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8.3.1 More AP Edit
Use this screen to edit an SSID profile. Click the Edit icon next to an SSID in the More AP screen.
The following screen displays.
Figure 51 Network > Wireless LAN > More AP: Edit
The following table describes the fields in this screen.
Table 34 Network > Wireless LAN > More AP: Edit
LABEL
DESCRIPTION
Network Name (SSID)
The SSID (Service Set IDentity) identifies the service set with which a
wireless device is associated. Enter a descriptive name (up to 32 printable 7bit ASCII characters) for the wireless LAN.
Note: If you are configuring the ZyXEL Device from a computer connected to
the wireless LAN and you change the ZyXEL Device’s SSID or security
settings, you will lose your wireless connection when you press Apply
to confirm. You must then change the wireless settings of your
computer to match the ZyXEL Device’s new settings.
Hide SSID
Select this check box to hide the SSID in the outgoing beacon frame so a
station cannot obtain the SSID through scanning using a site survey tool.
Security Mode
See Section 8.2 on page 99 for more details about this field.
MAC Filter
This shows whether the wireless devices with the MAC addresses listed are
allowed or denied to access the ZyXEL Device using this SSID.
Edit
Click this to go to the MAC Filter screen to configure MAC filter settings. See
Section 8.2.6 on page 106 for more details.
QoS
Select this check box to activate Quality of Service (QoS).
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
8.4 The WPS Screen
Use this screen to configure WiFi Protected Setup (WPS) on your ZyXEL Device.
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WPS allows you to quickly set up a wireless network with strong security, without having to
configure security settings manually. Set up each WPS connection between two devices. Both
devices must support WPS.
Click Network > Wireless LAN > WPS. The following screen displays.
Figure 52 Network > Wireless LAN > WPS
The following table describes the labels in this screen.
Table 35 Network > Wireless LAN > WPS
LABEL
DESCRIPTION
WPS Setup
WPS Setup
Select the check box to activate WPS on the ZyXEL Device.
PIN Number
This shows the PIN (Personal Identification Number) of the ZyXEL Device. Enter
this PIN in the configuration utility of the device you want to connect to using
WPS.
The PIN is not necessary when you use WPS push-button method.
Generate
WPS Status
Click this to have the ZyXEL Device create a new PIN.
This displays Configured when the ZyXEL Device has connected to a wireless
network using WPS or Enable WPS is selected and wireless or wireless security
settings have been changed. The current wireless and wireless security settings
also appear in the screen.
This displays Unconfigured if WPS is disabled and there is no wireless or
wireless security changes on the ZyXEL Device or you click Release to remove
the configured wireless and wireless security settings.
Release
This button is available when the WPS status is Configured.
Click this button to remove all configured wireless and wireless security settings
for WPS connections on the ZyXEL Device.
Apply
Click this to save your changes.
Refresh
Click this to restore your previously saved settings.
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8.5 The WPS Station Screen
Use this screen to set up a WPS wireless network using either Push Button Configuration (PBC) or
PIN Configuration.
Click Network > Wireless LAN > WPS Station. The following screen displays.
Figure 53 Network > Wireless LAN > WPS Station
The following table describes the labels in this screen.
Table 36 Network > Wireless LAN > WPS Station
LABEL
DESCRIPTION
Push Button
Click this to add another WPS-enabled wireless device (within wireless range of
the ZyXEL Device) to your wireless network. This button may either be a physical
button on the outside of device, or a menu button similar to the Push Button on
this screen.
Note: You must press the other wireless device’s WPS button within two minutes of
pressing this button.
Or input station's
PIN number
Enter the PIN of the device that you are setting up a WPS connection with and
click Start to authenticate and add the wireless device to your wireless network.
You can find the PIN either on the outside of the device, or by checking the
device’s settings.
Note: You must also activate WPS on that device within two minutes to have it
present its PIN to the ZyXEL Device.
8.6 The WDS Screen
An AP using the Wireless Distribution System (WDS) can function as a wireless network bridge
allowing you to wirelessly connect two wired network segments. The WDS screen allows you to
configure the ZyXEL Device to connect to two or more APs wirelessly when WDS is enabled.
Use this screen to set up your WDS (Wireless Distribution System) links between the ZyXEL Device
and other wireless APs. You need to know the MAC address of the peer device. Once the security
settings of peer sides match one another, the connection between devices is made.
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Note: WDS security is independent of the security settings between the ZyXEL Device
and any wireless clients.
Note: At the time of writing, WDS is compatible with other ZyXEL APs only. Not all models
support WDS links. Check your other AP’s documentation.
Click Network > Wireless LAN > WDS. The following screen displays.
Figure 54 Network > Wireless LAN > WDS
The following table describes the labels in this screen.
Table 37 Network > Wireless LAN > WDS
LABEL
DESCRIPTION
WDS Security
Select the type of the key used to encrypt data between APs. All the wireless APs
(including the ZyXEL Device) must use the same pre-shared key for data
transmission.
The option is available only when you set the security mode to WPA(2) or
WPA(2)-PSK in the Wireless LAN > AP screen.
TKIP
Select this to use TKIP (Temporal Key Integrity Protocol) encryption.
AES
Select this to use AES (Advanced Encryption Standard) encryption.
This is the index number of the individual WDS link.
Active
Select this to activate the link between the ZyXEL Device and the peer device to
which this entry refers. When you do not select the check box this link is down.
Remote Bridge
MAC Address
Type the MAC address of the peer device in a valid MAC address format (six
hexadecimal character pairs, for example 12:34:56:78:9a:bc).
PSK
Enter a Pre-Shared Key (PSK) from 8 to 63 case-sensitive ASCII characters
(including spaces and symbols).
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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8.7 The Scheduling Screen
Use the wireless LAN scheduling to configure the days you want to enable or disable the wireless
LAN. Click Network > Wireless LAN > Scheduling. The following screen displays.
Figure 55 Network > Wireless LAN > Scheduling
The following table describes the labels in this screen.
Table 38 Network > Wireless LAN > QoS
LABEL
DESCRIPTION
Enable Wireless
LAN Scheduling
Select this box to activate wireless LAN scheduling on your ZyXEL Device.
Action
Select On or Off to enable or disable the wireless LAN.
Day
Check the day(s) you want to turn the wireless LAN on or off.
Except for the
following times
Specify a time frame during which the schedule would apply.
Apply
Click this to save your changes.
Reset
Click this to restore your previously saved settings.
For example, if you set the time range from 12:00 to 23:00, the wireless LAN will
be turned on only during this time period.
8.8 Wireless LAN Technical Reference
This section discusses wireless LANs in depth. For more information, see the appendix.
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8.8.1 Wireless Network Overview
Wireless networks consist of wireless clients, access points and bridges.
• A wireless client is a radio connected to a user’s computer.
• An access point is a radio with a wired connection to a network, which can connect with
numerous wireless clients and let them access the network.
• A bridge is a radio that relays communications between access points and wireless clients,
extending a network’s range.
Traditionally, a wireless network operates in one of two ways.
• An “infrastructure” type of network has one or more access points and one or more wireless
clients. The wireless clients connect to the access points.
• An “ad-hoc” type of network is one in which there is no access point. Wireless clients connect to
one another in order to exchange information.
The following figure provides an example of a wireless network.
Figure 56 Example of a Wireless Network
The wireless network is the part in the blue circle. In this wireless network, devices A and B use the
access point (AP) to interact with the other devices (such as the printer) or with the Internet. Your
ZyXEL Device is the AP.
Every wireless network must follow these basic guidelines.
• Every device in the same wireless network must use the same SSID.
The SSID is the name of the wireless network. It stands for Service Set IDentifier.
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• If two wireless networks overlap, they should use a different channel.
Like radio stations or television channels, each wireless network uses a specific channel, or
frequency, to send and receive information.
• Every device in the same wireless network must use security compatible with the AP.
Security stops unauthorized devices from using the wireless network. It can also protect the
information that is sent in the wireless network.
Radio Channels
In the radio spectrum, there are certain frequency bands allocated for unlicensed, civilian use. For
the purposes of wireless networking, these bands are divided into numerous channels. This allows a
variety of networks to exist in the same place without interfering with one another. When you
create a network, you must select a channel to use.
Since the available unlicensed spectrum varies from one country to another, the number of
available channels also varies.
8.8.2 Additional Wireless Terms
The following table describes some wireless network terms and acronyms used in the ZyXEL
Device’s Web Configurator.
Table 39 Additional Wireless Terms
TERM
DESCRIPTION
RTS/CTS Threshold
In a wireless network which covers a large area, wireless devices are
sometimes not aware of each other’s presence. This may cause them to
send information to the AP at the same time and result in information
colliding and not getting through.
By setting this value lower than the default value, the wireless devices must
sometimes get permission to send information to the ZyXEL Device. The
lower the value, the more often the devices must get permission.
If this value is greater than the fragmentation threshold value (see below),
then wireless devices never have to get permission to send information to
the ZyXEL Device.
Preamble
A preamble affects the timing in your wireless network. There are two
preamble modes: long and short. If a device uses a different preamble mode
than the ZyXEL Device does, it cannot communicate with the ZyXEL Device.
Authentication
The process of verifying whether a wireless device is allowed to use the
wireless network.
Fragmentation
Threshold
A small fragmentation threshold is recommended for busy networks, while a
larger threshold provides faster performance if the network is not very busy.
8.8.3 Wireless Security Overview
By their nature, radio communications are simple to intercept. For wireless data networks, this
means that anyone within range of a wireless network without security can not only read the data
passing over the airwaves, but also join the network. Once an unauthorized person has access to
the network, he or she can steal information or introduce malware (malicious software) intended to
compromise the network. For these reasons, a variety of security systems have been developed to
ensure that only authorized people can use a wireless data network, or understand the data carried
on it.
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These security standards do two things. First, they authenticate. This means that only people
presenting the right credentials (often a username and password, or a “key” phrase) can access the
network. Second, they encrypt. This means that the information sent over the air is encoded. Only
people with the code key can understand the information, and only people who have been
authenticated are given the code key.
These security standards vary in effectiveness. Some can be broken, such as the old Wired
Equivalent Protocol (WEP). Using WEP is better than using no security at all, but it will not keep a
determined attacker out. Other security standards are secure in themselves but can be broken if a
user does not use them properly. For example, the WPA-PSK security standard is very secure if you
use a long key which is difficult for an attacker’s software to guess - for example, a twenty-letter
long string of apparently random numbers and letters - but it is not very secure if you use a short
key which is very easy to guess - for example, a three-letter word from the dictionary.
Because of the damage that can be done by a malicious attacker, it’s not just people who have
sensitive information on their network who should use security. Everybody who uses any wireless
network should ensure that effective security is in place.
A good way to come up with effective security keys, passwords and so on is to use obscure
information that you personally will easily remember, and to enter it in a way that appears random
and does not include real words. For example, if your mother owns a 1970 Dodge Challenger and
her favorite movie is Vanishing Point (which you know was made in 1971) you could use
“70dodchal71vanpoi” as your security key.
The following sections introduce different types of wireless security you can set up in the wireless
network.
8.8.3.1 SSID
Normally, the ZyXEL Device acts like a beacon and regularly broadcasts the SSID in the area. You
can hide the SSID instead, in which case the ZyXEL Device does not broadcast the SSID. In
addition, you should change the default SSID to something that is difficult to guess.
This type of security is fairly weak, however, because there are ways for unauthorized wireless
devices to get the SSID. In addition, unauthorized wireless devices can still see the information that
is sent in the wireless network.
8.8.3.2 MAC Address Filter
Every device that can use a wireless network has a unique identification number, called a MAC
address.1 A MAC address is usually written using twelve hexadecimal characters2; for example,
00A0C5000002 or 00:A0:C5:00:00:02. To get the MAC address for each device in the wireless
network, see the device’s User’s Guide or other documentation.
You can use the MAC address filter to tell the ZyXEL Device which devices are allowed or not
allowed to use the wireless network. If a device is allowed to use the wireless network, it still has to
have the correct information (SSID, channel, and security). If a device is not allowed to use the
wireless network, it does not matter if it has the correct information.
1.
Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These kinds
of wireless devices might not have MAC addresses.
2.
Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
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This type of security does not protect the information that is sent in the wireless network.
Furthermore, there are ways for unauthorized wireless devices to get the MAC address of an
authorized device. Then, they can use that MAC address to use the wireless network.
8.8.3.3 User Authentication
Authentication is the process of verifying whether a wireless device is allowed to use the wireless
network. You can make every user log in to the wireless network before using it. However, every
device in the wireless network has to support IEEE 802.1x to do this.
For wireless networks, you can store the user names and passwords for each user in a RADIUS
server. This is a server used in businesses more than in homes. If you do not have a RADIUS server,
you cannot set up user names and passwords for your users.
Unauthorized wireless devices can still see the information that is sent in the wireless network,
even if they cannot use the wireless network. Furthermore, there are ways for unauthorized
wireless users to get a valid user name and password. Then, they can use that user name and
password to use the wireless network.
8.8.3.4 Encryption
Wireless networks can use encryption to protect the information that is sent in the wireless
network. Encryption is like a secret code. If you do not know the secret code, you cannot
understand the message.
The types of encryption you can choose depend on the type of authentication. (See Section 8.8.3.3
on page 116 for information about this.)
Table 40 Types of Encryption for Each Type of Authentication
Weakest
NO AUTHENTICATION
RADIUS SERVER
No Security
WPA
Static WEP
WPA-PSK
Strongest
WPA2-PSK
WPA2
For example, if the wireless network has a RADIUS server, you can choose WPA or WPA2. If users
do not log in to the wireless network, you can choose no encryption, Static WEP, WPA-PSK, or
WPA2-PSK.
Usually, you should set up the strongest encryption that every device in the wireless network
supports. For example, suppose you have a wireless network with the ZyXEL Device and you do not
have a RADIUS server. Therefore, there is no authentication. Suppose the wireless network has two
devices. Device A only supports WEP, and device B supports WEP and WPA. Therefore, you should
set up Static WEP in the wireless network.
Note: It is recommended that wireless networks use WPA-PSK, WPA, or stronger
encryption. The other types of encryption are better than none at all, but it is still
possible for unauthorized wireless devices to figure out the original information
pretty quickly.
When you select WPA2 or WPA2-PSK in your ZyXEL Device, you can also select an option (WPA
compatible) to support WPA as well. In this case, if some of the devices support WPA and some
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support WPA2, you should set up WPA2-PSK or WPA2 (depending on the type of wireless network
login) and select the WPA compatible option in the ZyXEL Device.
Many types of encryption use a key to protect the information in the wireless network. The longer
the key, the stronger the encryption. Every device in the wireless network must have the same key.
8.8.4 Signal Problems
Because wireless networks are radio networks, their signals are subject to limitations of distance,
interference and absorption.
Problems with distance occur when the two radios are too far apart. Problems with interference
occur when other radio waves interrupt the data signal. Interference may come from other radio
transmissions, such as military or air traffic control communications, or from machines that are
coincidental emitters such as electric motors or microwaves. Problems with absorption occur when
physical objects (such as thick walls) are between the two radios, muffling the signal.
8.8.5 BSS
A Basic Service Set (BSS) exists when all communications between wireless stations or between a
wireless station and a wired network client go through one access point (AP).
Intra-BSS traffic is traffic between wireless stations in the BSS. When Intra-BSS traffic blocking is
disabled, wireless station A and B can access the wired network and communicate with each other.
When Intra-BSS traffic blocking is enabled, wireless station A and B can still access the wired
network but cannot communicate with each other.
Figure 57 Basic Service set
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8.8.6 MBSSID
Traditionally, you need to use different APs to configure different Basic Service Sets (BSSs). As well
as the cost of buying extra APs, there is also the possibility of channel interference. The ZyXEL
Device’s MBSSID (Multiple Basic Service Set IDentifier) function allows you to use one access point
to provide several BSSs simultaneously. You can then assign varying QoS priorities and/or security
modes to different SSIDs.
Wireless devices can use different BSSIDs to associate with the same AP.
8.8.6.1 Notes on Multiple BSSs
• A maximum of eight BSSs are allowed on one AP simultaneously.
• You must use different keys for different BSSs. If two wireless devices have different BSSIDs
(they are in different BSSs), but have the same keys, they may hear each other’s
communications (but not communicate with each other).
• MBSSID should not replace but rather be used in conjunction with 802.1x security.
8.8.7 Wireless Distribution System (WDS)
The ZyXEL Device can act as a wireless network bridge and establish WDS (Wireless Distribution
System) links with other APs. You need to know the MAC addresses of the APs you want to link to.
Once the security settings of peer sides match one another, the connection between devices is
made.
At the time of writing, WDS security is compatible with other ZyXEL access points only. Refer to
your other access point’s documentation for details.
The following figure illustrates how WDS link works between APs. Notebook computer A is a
wireless client connecting to access point AP 1. AP 1 has no wired Internet connection, but it can
establish a WDS link with access point AP 2, which has a wired Internet connection. When AP 1
has a WDS link with AP 2, the notebook computer can access the Internet through AP 2.
Figure 58 WDS Link Example
WDS
AP 1
AP 2
8.8.8 WiFi Protected Setup (WPS)
Your ZyXEL Device supports WiFi Protected Setup (WPS), which is an easy way to set up a secure
wireless network. WPS is an industry standard specification, defined by the WiFi Alliance.
WPS allows you to quickly set up a wireless network with strong security, without having to
configure security settings manually. Each WPS connection works between two devices. Both
devices must support WPS (check each device’s documentation to make sure).
Depending on the devices you have, you can either press a button (on the device itself, or in its
configuration utility) or enter a PIN (a unique Personal Identification Number that allows one device
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to authenticate the other) in each of the two devices. When WPS is activated on a device, it has two
minutes to find another device that also has WPS activated. Then, the two devices connect and set
up a secure network by themselves.
8.8.8.1 Push Button Configuration
WPS Push Button Configuration (PBC) is initiated by pressing a button on each WPS-enabled
device, and allowing them to connect automatically. You do not need to enter any information.
Not every WPS-enabled device has a physical WPS button. Some may have a WPS PBC button in
their configuration utilities instead of or in addition to the physical button.
Take the following steps to set up WPS using the button.
Ensure that the two devices you want to set up are within wireless range of one another.
Look for a WPS button on each device. If the device does not have one, log into its configuration
utility and locate the button (see the device’s User’s Guide for how to do this - for the ZyXEL
Device, see Section 8.5 on page 110).
Press the button on one of the devices (it doesn’t matter which). For the ZyXEL Device you must
press the WPS button for more than three seconds.
Within two minutes, press the button on the other device. The registrar sends the network name
(SSID) and security key through an secure connection to the enrollee.
If you need to make sure that WPS worked, check the list of associated wireless clients in the AP’s
configuration utility. If you see the wireless client in the list, WPS was successful.
8.8.8.2 PIN Configuration
Each WPS-enabled device has its own PIN (Personal Identification Number). This may either be
static (it cannot be changed) or dynamic (in some devices you can generate a new PIN by clicking
on a button in the configuration interface).
Use the PIN method instead of the push-button configuration (PBC) method if you want to ensure
that the connection is established between the devices you specify, not just the first two devices to
activate WPS in range of each other. However, you need to log into the configuration interfaces of
both devices to use the PIN method.
When you use the PIN method, you must enter the PIN from one device (usually the wireless client)
into the second device (usually the Access Point or wireless router). Then, when WPS is activated
on the first device, it presents its PIN to the second device. If the PIN matches, one device sends
the network and security information to the other, allowing it to join the network.
Take the following steps to set up a WPS connection between an access point or wireless router
(referred to here as the AP) and a client device using the PIN method.
Ensure WPS is enabled on both devices.
Access the WPS section of the AP’s configuration interface. See the device’s User’s Guide for how to
do this.
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Look for the client’s WPS PIN; it will be displayed either on the device, or in the WPS section of the
client’s configuration interface (see the device’s User’s Guide for how to find the WPS PIN - for the
ZyXEL Device, see Section 8.4 on page 108).
Enter the client’s PIN in the AP’s configuration interface.
If the client device’s configuration interface has an area for entering another device’s PIN, you can
either enter the client’s PIN in the AP, or enter the AP’s PIN in the client - it does not matter which.
Start WPS on both devices within two minutes.
Use the configuration utility to activate WPS, not the push-button on the device itself.
On a computer connected to the wireless client, try to connect to the Internet. If you can connect,
WPS was successful.
If you cannot connect, check the list of associated wireless clients in the AP’s configuration utility. If
you see the wireless client in the list, WPS was successful.
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The following figure shows a WPS-enabled wireless client (installed in a notebook computer)
connecting to the WPS-enabled AP via the PIN method.
Figure 59 Example WPS Process: PIN Method
ENROLLEE
REGISTRAR
WPS
This device’s
WPS PIN: 123456
WPS
Enter WPS PIN
from other device:
WPS
START
WPS
START
WITHIN 2 MINUTES
SECURE EAP TUNNEL
SSID
WPA(2)-PSK
COMMUNICATION
8.8.8.3 How WPS Works
When two WPS-enabled devices connect, each device must assume a specific role. One device acts
as the registrar (the device that supplies network and security settings) and the other device acts
as the enrollee (the device that receives network and security settings. The registrar creates a
secure EAP (Extensible Authentication Protocol) tunnel and sends the network name (SSID) and the
WPA-PSK or WPA2-PSK pre-shared key to the enrollee. Whether WPA-PSK or WPA2-PSK is used
depends on the standards supported by the devices. If the registrar is already part of a network, it
sends the existing information. If not, it generates the SSID and WPA(2)-PSK randomly.
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The following figure shows a WPS-enabled client (installed in a notebook computer) connecting to a
WPS-enabled access point.
Figure 60 How WPS works
ACTIVATE
WPS
ACTIVATE
WPS
WITHIN 2 MINUTES
WPS HANDSHAKE
ENROLLEE
SECURE TUNNEL
REGISTRAR
SECURITY INFO
COMMUNICATION
The roles of registrar and enrollee last only as long as the WPS setup process is active (two
minutes). The next time you use WPS, a different device can be the registrar if necessary.
The WPS connection process is like a handshake; only two devices participate in each WPS
transaction. If you want to add more devices you should repeat the process with one of the existing
networked devices and the new device.
Note that the access point (AP) is not always the registrar, and the wireless client is not always the
enrollee. All WPS-certified APs can be a registrar, and so can some WPS-enabled wireless clients.
By default, a WPS devices is “unconfigured”. This means that it is not part of an existing network
and can act as either enrollee or registrar (if it supports both functions). If the registrar is
unconfigured, the security settings it transmits to the enrollee are randomly-generated. Once a
WPS-enabled device has connected to another device using WPS, it becomes “configured”. A
configured wireless client can still act as enrollee or registrar in subsequent WPS connections, but a
configured access point can no longer act as enrollee. It will be the registrar in all subsequent WPS
connections in which it is involved. If you want a configured AP to act as an enrollee, you must reset
it to its factory defaults.
8.8.8.4 Example WPS Network Setup
This section shows how security settings are distributed in an example WPS setup.
The following figure shows an example network. In step 1, both AP1 and Client 1 are
unconfigured. When WPS is activated on both, they perform the handshake. In this example, AP1
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is the registrar, and Client 1 is the enrollee. The registrar randomly generates the security
information to set up the network, since it is unconfigured and has no existing information.
Figure 61 WPS: Example Network Step 1
ENROLLEE
REGISTRAR
SECURITY INFO
AP1
CLIENT 1
In step 2, you add another wireless client to the network. You know that Client 1 supports registrar
mode, but it is better to use AP1 for the WPS handshake with the new client since you must
connect to the access point anyway in order to use the network. In this case, AP1 must be the
registrar, since it is configured (it already has security information for the network). AP1 supplies
the existing security information to Client 2.
Figure 62 WPS: Example Network Step 2
REGISTRAR
EXISTING CONNECTION
AP1
CLIENT 1
ENROLLEE
INF
RI
CU
SE
CLIENT 2
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In step 3, you add another access point (AP2) to your network. AP2 is out of range of AP1, so you
cannot use AP1 for the WPS handshake with the new access point. However, you know that Client
2 supports the registrar function, so you use it to perform the WPS handshake instead.
Figure 63 WPS: Example Network Step 3
EXISTING CONNECTION
CLIENT 1
IS
EX
GC
TIN
ION
CT
NN
AP1
REGISTRAR
CLIENT 2
SE
CU
RIT
ENROLLEE
INF
AP2
8.8.8.5 Limitations of WPS
WPS has some limitations of which you should be aware.
• WPS works in Infrastructure networks only (where an AP and a wireless client communicate). It
does not work in Ad-Hoc networks (where there is no AP).
• When you use WPS, it works between two devices only. You cannot enroll multiple devices
simultaneously, you must enroll one after the other.
For instance, if you have two enrollees and one registrar you must set up the first enrollee (by
pressing the WPS button on the registrar and the first enrollee, for example), then check that it
successfully enrolled, then set up the second device in the same way.
• WPS works only with other WPS-enabled devices. However, you can still add non-WPS devices to
a network you already set up using WPS.
WPS works by automatically issuing a randomly-generated WPA-PSK or WPA2-PSK pre-shared
key from the registrar device to the enrollee devices. Whether the network uses WPA-PSK or
WPA2-PSK depends on the device. You can check the configuration interface of the registrar
device to discover the key the network is using (if the device supports this feature). Then, you
can enter the key into the non-WPS device and join the network as normal (the non-WPS device
must also support WPA-PSK or WPA2-PSK).
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• When you use the PBC method, there is a short period (from the moment you press the button
on one device to the moment you press the button on the other device) when any WPS-enabled
device could join the network. This is because the registrar has no way of identifying the
“correct” enrollee, and cannot differentiate between your enrollee and a rogue device. This is a
possible way for a hacker to gain access to a network.
You can easily check to see if this has happened. WPS works between only two devices
simultaneously, so if another device has enrolled your device will be unable to enroll, and will not
have access to the network. If this happens, open the access point’s configuration interface and
look at the list of associated clients (usually displayed by MAC address). It does not matter if the
access point is the WPS registrar, the enrollee, or was not involved in the WPS handshake; a
rogue device must still associate with the access point to gain access to the network. Check the
MAC addresses of your wireless clients (usually printed on a label on the bottom of the device). If
there is an unknown MAC address you can remove it or reset the AP.
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C HAPT ER
Network Address Translation (NAT)
9.1 Overview
This chapter discusses how to configure NAT on the ZyXEL Device. NAT (Network Address
Translation - NAT, RFC 1631) is the translation of the IP address of a host in a packet, for example,
the source address of an outgoing packet, used within one network to a different IP address known
within another network.
9.1.1 What You Can Do in the NAT Screens
• Use the NAT General Setup screen (Section 9.2 on page 128) to configure the NAT setup
settings.
• Use the Port Forwarding screen (Section 9.3 on page 129) to configure forward incoming
service requests to the server(s) on your local network.
• Use the Address Mapping screen (Section 9.4 on page 132) to change your ZyXEL Device’s
address mapping settings.
• Use the ALG screen (Section 9.5 on page 135) to enable and disable the SIP (VoIP) ALG in the
ZyXEL Device.
9.1.2 What You Need To Know About NAT
Inside/Outside
Inside/outside denotes where a host is located relative to the ZyXEL Device, for example, the
computers of your subscribers are the inside hosts, while the web servers on the Internet are the
outside hosts.
Global/Local
Global/local denotes the IP address of a host in a packet as the packet traverses a router, for
example, the local address refers to the IP address of a host when the packet is in the local
network, while the global address refers to the IP address of the host when the same packet is
traveling in the WAN side.
NAT
In the simplest form, NAT changes the source IP address in a packet received from a subscriber
(the inside local address) to another (the inside global address) before forwarding the packet to the
WAN side. When the response comes back, NAT translates the destination address (the inside
global address) back to the inside local address before forwarding it to the original inside host.
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Port Forwarding
A port forwarding set is a list of inside (behind NAT on the LAN) servers, for example, web or FTP,
that you can make visible to the outside world even though NAT makes your whole inside network
appear as a single computer to the outside world.
SUA (Single User Account) Versus NAT
SUA (Single User Account) is a ZyNOS implementation of a subset of NAT that supports two types
of mapping, Many-to-One and Server. The ZyXEL Device also supports Full Feature NAT to map
multiple global IP addresses to multiple private LAN IP addresses of clients or servers using
mapping types as outlined in Table 48 on page 138.
• Choose SUA Only if you have just one public WAN IP address for your ZyXEL Device.
• Choose Full Feature if you have multiple public WAN IP addresses for your ZyXEL Device.
Finding Out More
See Section 9.6 on page 135 for advanced technical information on NAT.
9.2 The NAT General Setup Screen
Use this screen to activate NAT. Click Network > NAT to open the following screen.
Note: You must create a firewall rule in addition to setting up SUA/NAT, to allow traffic
from the WAN to be forwarded through the ZyXEL Device.
Figure 64 Network > NAT > General
The following table describes the labels in this screen.
Table 41 Network > NAT > General
128
LABEL
DESCRIPTION
Active Network
Address
Translation
Select this check box to enable NAT.
SUA Only
Select this radio button if you have just one public WAN IP address for your
ZyXEL Device.
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Table 41 Network > NAT > General (continued)
LABEL
DESCRIPTION
Full Feature
Select this radio button if you have multiple public WAN IP addresses for your
ZyXEL Device.
Max NAT/Firewall
Session Per User
When computers use peer to peer applications, such as file sharing applications,
they need to establish NAT sessions. If you do not limit the number of NAT
sessions a single client can establish, this can result in all of the available NAT
sessions being used. In this case, no additional NAT sessions can be established,
and users may not be able to access the Internet.
Each NAT session establishes a corresponding firewall session. Use this field to
limit the number of NAT/Firewall sessions client computers can establish through
the ZyXEL Device.
If your network has a small number of clients using peer to peer applications,
you can raise this number to ensure that their performance is not degraded by
the number of NAT sessions they can establish. If your network has a large
number of users using peer to peer applications, you can lower this number to
ensure no single client is exhausting all of the available NAT sessions.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
9.3 The Port Forwarding Screen
Note: This screen is available only when you select SUA only in the NAT > General
screen.
Use this screen to forward incoming service requests to the server(s) on your local network.
You may enter a single port number or a range of port numbers to be forwarded, and the local IP
address of the desired server. The port number identifies a service; for example, web service is on
port 80 and FTP on port 21. In some cases, such as for unknown services or where one server can
support more than one service (for example both FTP and web service), it might be better to
specify a range of port numbers. You can allocate a server IP address that corresponds to a port or
a range of ports.
The most often used port numbers and services are shown in Appendix E on page 279. Please refer
to RFC 1700 for further information about port numbers.
Note: Many residential broadband ISP accounts do not allow you to run any server
processes (such as a Web or FTP server) from your location. Your ISP may
periodically check for servers and may suspend your account if it discovers any
active services at your location. If you are unsure, refer to your ISP.
Default Server IP Address
In addition to the servers for specified services, NAT supports a default server IP address. A default
server receives packets from ports that are not specified in this screen.
Note: If you do not assign a Default Server IP address, the ZyXEL Device discards all
packets received for ports that are not specified here or in the remote management
setup.
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Configuring Servers Behind Port Forwarding (Example)
Let's say you want to assign ports 21-25 to one FTP, Telnet and SMTP server (A in the example),
port 80 to another (B in the example) and assign a default server IP address of 192.168.1.35 to a
third (C in the example). You assign the LAN IP addresses and the ISP assigns the WAN IP address.
The NAT network appears as a single host on the Internet.
Figure 65 Multiple Servers Behind NAT Example
A=192.168.1.33
LAN
WAN
B=192.168.1.34
192.168.1.1
C=192.168.1.35
IP Address assigned by ISP
D=192.168.1.36
9.3.1 Configuring the Port Forwarding Screen
Click Network > NAT > Port Forwarding to open the following screen.
See Appendix E on page 279 for port numbers commonly used for particular services.
Figure 66 Network > NAT > Port Forwarding
The following table describes the fields in this screen.
Table 42 Network > NAT > Port Forwarding
LABEL
DESCRIPTION
Default Server Setup
Default Server
In addition to the servers for specified services, NAT supports a default server. A
default server receives packets from ports that are not specified in this screen. If
you do not assign a Default Server IP address, the ZyXEL Device discards all
packets received for ports that are not specified here or in the remote
management setup.
Port Forwarding
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Table 42 Network > NAT > Port Forwarding
LABEL
DESCRIPTION
Service Name
Select a service from the drop-down list box.
Server IP Address Enter the IP address of the server for the specified service.
Add
Click this button to add a rule to the table below.
This is the rule index number (read-only).
Active
This field indicates whether the rule is active or not.
Clear the check box to disable the rule. Select the check box to enable it.
Service Name
This is a service’s name.
Start Port
This is the first port number that identifies a service.
End Port
This is the last port number that identifies a service.
Port Translation
This is the start/end port number that the device translates.
Start/End Port
Server IP Address This is the server’s IP address.
Modify
Click the edit icon to go to the screen where you can edit the port forwarding
rule.
Click the delete icon to delete an existing port forwarding rule. Note that
subsequent address mapping rules move up by one when you take this action.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
9.3.2 The Port Forwarding Rule Edit Screen
Use this screen to edit a port forwarding rule. Click the rule’s edit icon in the Port Forwarding
screen to display the screen shown next.
Figure 67 Network > NAT > Port Forwarding: Edit
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The following table describes the fields in this screen.
Table 43 Network > NAT > Port Forwarding: Edit
LABEL
DESCRIPTION
Rule Setup
Active
Click this check box to enable the rule.
Service Name
Enter a name to identify this port-forwarding rule.
Start Port
Enter a port number in this field.
To forward only one port, enter the port number again in the End Port field.
To forward a series of ports, enter the start port number here and the end port
number in the End Port field.
End Port
Enter a port number in this field.
To forward only one port, enter the port number again in the Start Port field
above and then enter it again in this field.
To forward a series of ports, enter the last port number in a series that begins with
the port number in the Start Port field above.
Server IP
Address
Enter the inside IP address of the server here.
Port Translation
Start / End Port
Enter the start port number here to which you want the device to translate the
incoming port. For a range of ports, you only need to enter the first number of the
range to which you want the incoming ports translated, the device automatically
calculates the last port of the translated port range.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
9.4 The Address Mapping Screen
Note: The Address Mapping screen is available only when you select Full Feature in
the NAT > General screen.
Ordering your rules is important because the ZyXEL Device applies the rules in the order that you
specify. When a rule matches the current packet, the ZyXEL Device takes the corresponding action
and the remaining rules are ignored. If there are any empty rules before your new configured rule,
your configured rule will be pushed up by that number of empty rules. For example, if you have
already configured rules 1 to 6 in your current set and now you configure rule number 9. In the set
summary screen, the new rule will be rule 7, not 9. Now if you delete rule 4, rules 5 to 7 will be
pushed up by 1 rule, so old rules 5, 6 and 7 become new rules 4, 5 and 6.
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To change your ZyXEL Device’s address mapping settings, click Network > NAT > Address
Mapping to open the following screen.
Figure 68 Network > NAT > Address Mapping
The following table describes the fields in this screen.
Table 44 Network > NAT > Address Mapping
LABEL
DESCRIPTION
This is the rule index number.
Local Start IP
This is the starting Inside Local IP Address (ILA). Local IP addresses are N/A for
Server port mapping.
Local End IP
This is the end Inside Local IP Address (ILA). If the rule is for all local IP addresses,
then this field displays 0.0.0.0 as the Local Start IP address and
255.255.255.255 as the Local End IP address. This field is N/A for One-to-one
and Server mapping types.
Global Start IP
This is the starting Inside Global IP Address (IGA). Enter 0.0.0.0 here if you have a
dynamic IP address from your ISP. You can only do this for Many-to-One and
Server mapping types.
Global End IP
This is the ending Inside Global IP Address (IGA). This field is N/A for One-toone, Many-to-One and Server mapping types.
Type
1-1: One-to-one mode maps one local IP address to one global IP address. Note
that port numbers do not change for the One-to-one NAT mapping type.
M-1: Many-to-One mode maps multiple local IP addresses to one global IP
address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's
Single User Account feature that previous ZyXEL routers supported only.
M-M Ov (Overload): Many-to-Many Overload mode maps multiple local IP
addresses to shared global IP addresses.
MM No (No Overload): Many-to-Many No Overload mode maps each local IP
address to unique global IP addresses.
Server: This type allows you to specify inside servers of different services behind
the NAT to be accessible to the outside world.
Modify
Click the edit icon to go to the screen where you can edit the address mapping
rule.
Click the delete icon to delete an existing address mapping rule. Note that
subsequent address mapping rules move up by one when you take this action.
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9.4.1 The Address Mapping Rule Edit Screen
Use this screen to edit an address mapping rule. Click the rule’s edit icon in the Address Mapping
screen to display the screen shown next.
Figure 69 Network > NAT > Address Mapping: Edit
The following table describes the fields in this screen.
Table 45 Network > NAT > Address Mapping: Edit
LABEL
DESCRIPTION
Type
Choose the port mapping type from one of the following.
One-to-One: One-to-One mode maps one local IP address to one global IP
address. Note that port numbers do not change for One-to-one NAT mapping type.
Many-to-One: Many-to-One mode maps multiple local IP addresses to one global
IP address. This is equivalent to SUA (i.e., PAT, port address translation), ZyXEL's
Single User Account feature that previous ZyXEL routers supported only.
Many-to-Many Overload: Many-to-Many Overload mode maps multiple local IP
addresses to shared global IP addresses.
Many-to-Many No Overload: Many-to-Many No Overload mode maps each local
IP address to unique global IP addresses.
Server: This type allows you to specify inside servers of different services behind
the NAT to be accessible to the outside world.
Local Start IP
This is the starting local IP address (ILA). Local IP addresses are N/A for Server
port mapping.
Local End IP
This is the end local IP address (ILA). If your rule is for all local IP addresses, then
enter 0.0.0.0 as the Local Start IP address and 255.255.255.255 as the Local
End IP address.
This field is N/A for One-to-One and Server mapping types.
Global Start IP
This is the starting global IP address (IGA). Enter 0.0.0.0 here if you have a
dynamic IP address from your ISP.
Global End IP
This is the ending global IP address (IGA). This field is N/A for One-to-One,
Many-to-One and Server mapping types.
Server Mapping
Set
Click this link to go to the Port Forwarding screen to edit a port forwarding set
that you have selected in the Server Mapping Set field.
Edit Details
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Table 45 Network > NAT > Address Mapping: Edit (continued)
LABEL
DESCRIPTION
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
9.5 The ALG Screen
Some NAT routers may include a SIP Application Layer Gateway (ALG). A SIP ALG allows SIP calls
to pass through NAT by examining and translating IP addresses embedded in the data stream.
When the ZyXEL Device registers with the SIP register server, the SIP ALG translates the ZyXEL
Device’s private IP address inside the SIP data stream to a public IP address. You do not need to
use STUN or an outbound proxy if your ZyXEL Device is behind a SIP ALG.
Use this screen to enable and disable the SIP (VoIP) ALG in the ZyXEL Device. To access this
screen, click Network > NAT > ALG.
Figure 70 Network > NAT > ALG
The following table describes the fields in this screen.
Table 46 Network > NAT > ALG
LABEL
DESCRIPTION
Enable SIP ALG
Select this to make sure SIP (VoIP) works correctly with port-forwarding and
address-mapping rules.
Apply
Click this to save your changes.
Reset
Click this to restore your previously saved settings.
9.6 NAT Technical Reference
This chapter contains more information regarding NAT.
9.6.1 NAT Definitions
Inside/outside denotes where a host is located relative to the ZyXEL Device, for example, the
computers of your subscribers are the inside hosts, while the web servers on the Internet are the
outside hosts.
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Global/local denotes the IP address of a host in a packet as the packet traverses a router, for
example, the local address refers to the IP address of a host when the packet is in the local
network, while the global address refers to the IP address of the host when the same packet is
traveling in the WAN side.
Note that inside/outside refers to the location of a host, while global/local refers to the IP address
of a host used in a packet. Thus, an inside local address (ILA) is the IP address of an inside host in
a packet when the packet is still in the local network, while an inside global address (IGA) is the IP
address of the same inside host when the packet is on the WAN side. The following table
summarizes this information.
Table 47 NAT Definitions
ITEM
DESCRIPTION
Inside
This refers to the host on the LAN.
Outside
This refers to the host on the WAN.
Local
This refers to the packet address (source or destination) as the packet travels on the
LAN.
Global
This refers to the packet address (source or destination) as the packet travels on the
WAN.
NAT never changes the IP address (either local or global) of an outside host.
9.6.2 What NAT Does
In the simplest form, NAT changes the source IP address in a packet received from a subscriber
(the inside local address) to another (the inside global address) before forwarding the packet to the
WAN side. When the response comes back, NAT translates the destination address (the inside
global address) back to the inside local address before forwarding it to the original inside host. Note
that the IP address (either local or global) of an outside host is never changed.
The global IP addresses for the inside hosts can be either static or dynamically assigned by the ISP.
In addition, you can designate servers, for example, a web server and a telnet server, on your local
network and make them accessible to the outside world. If you do not define any servers (for Manyto-One and Many-to-Many Overload mapping – see Table 48 on page 138), NAT offers the
additional benefit of firewall protection. With no servers defined, your ZyXEL Device filters out all
incoming inquiries, thus preventing intruders from probing your network. For more information on
IP address translation, refer to RFC 1631, The IP Network Address Translator (NAT).
9.6.3 How NAT Works
Each packet has two addresses – a source address and a destination address. For outgoing packets,
the ILA (Inside Local Address) is the source address on the LAN, and the IGA (Inside Global
Address) is the source address on the WAN. For incoming packets, the ILA is the destination
address on the LAN, and the IGA is the destination address on the WAN. NAT maps private (local)
IP addresses to globally unique ones required for communication with hosts on other networks. It
replaces the original IP source address (and TCP or UDP source port numbers for Many-to-One and
Many-to-Many Overload NAT mapping) in each packet and then forwards it to the Internet. The
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ZyXEL Device keeps track of the original addresses and port numbers so incoming reply packets can
have their original values restored. The following figure illustrates this.
Figure 71 How NAT Works
NAT Table
LAN
Inside Local
IP Address
192.168.1.10
192.168.1.11
192.168.1.12
192.168.1.13
192.168.1.13
192.168.1.12
SA
SA
192.168.1.10
IGA1
Inside Local
Address (ILA)
192.168.1.11
Inside Global
IP Address
IGA 1
IGA 2
IGA 3
IGA 4
WAN
Inside Global
Address (IGA)
192.168.1.10
9.6.4 NAT Application
The following figure illustrates a possible NAT application, where three inside LANs (logical LANs
using IP alias) behind the ZyXEL Device can communicate with three distinct WAN networks.
Figure 72 NAT Application With IP Alias
9.6.5 NAT Mapping Types
NAT supports five types of IP/port mapping. They are:
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• One to One: In One-to-One mode, the ZyXEL Device maps one local IP address to one global IP
address.
• Many to One: In Many-to-One mode, the ZyXEL Device maps multiple local IP addresses to one
global IP address. This is equivalent to SUA (for instance, PAT, port address translation), ZyXEL’s
Single User Account feature that previous ZyXEL routers supported (the SUA Only option in
today’s routers).
• Many to Many Overload: In Many-to-Many Overload mode, the ZyXEL Device maps the
multiple local IP addresses to shared global IP addresses.
• Many-to-Many No Overload: In Many-to-Many No Overload mode, the ZyXEL Device maps
each local IP address to a unique global IP address.
• Server: This type allows you to specify inside servers of different services behind the NAT to be
accessible to the outside world.
Port numbers do NOT change for One-to-One and Many-to-Many No Overload NAT mapping
types.
The following table summarizes these types.
Table 48 NAT Mapping Types
TYPE
IP MAPPING
One-to-One
ILA1ÅÆ IGA1
Many-to-One (SUA/PAT)
ILA1ÅÆ IGA1
ILA2ÅÆ IGA1
…
Many-to-Many Overload
ILA1ÅÆ IGA1
ILA2ÅÆ IGA2
ILA3ÅÆ IGA1
ILA4ÅÆ IGA2
…
Many-to-Many No Overload
ILA1ÅÆ IGA1
ILA2ÅÆ IGA2
ILA3ÅÆ IGA3
…
Server
Server 1 IPÅÆ IGA1
Server 2 IPÅÆ IGA1
Server 3 IPÅÆ IGA1
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10
Firewall
10.1 Overview
This chapter shows you how to enable the ZyXEL Device firewall. Use the firewall to protect your
ZyXEL Device and network from attacks by hackers on the Internet and control access to it. By
default the firewall:
• allows traffic that originates from your LAN computers to go to all other networks.
• blocks traffic that originates on other networks from going to the LAN.
• blocks SYN and port scanner attacks.
By default, the ZyXEL Device blocks DDOS, LAND and Ping of Death attacks whether the firewall is
enabled or disabled.
10.1.1 What You Can Do in the Firewall Screens
Use the Firewall screen (Section 10.2 on page 141) to enable firewall on the ZyXEL Device.
10.1.2 What You Need to Know About Firewall
SYN Attack
A SYN attack floods a targeted system with a series of SYN packets. Each packet causes the
targeted system to issue a SYN-ACK response. While the targeted system waits for the ACK that
follows the SYN-ACK, it queues up all outstanding SYN-ACK responses on a backlog queue. SYNACKs are moved off the queue only when an ACK comes back or when an internal timer terminates
the three-way handshake. Once the queue is full, the system will ignore all incoming SYN requests,
making the system unavailable for legitimate users.
DoS
Denials of Service (DoS) attacks are aimed at devices and networks with a connection to the
Internet. Their goal is not to steal information, but to disable a device or network so users no longer
have access to network resources. The ZyXEL Device is pre-configured to automatically detect and
thwart all known DoS attacks.
DDoS
A DDoS attack is one in which multiple compromised systems attack a single target, thereby
causing denial of service for users of the targeted system.
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LAND Attack
In a LAND attack, hackers flood SYN packets into the network with a spoofed source IP address of
the target system. This makes it appear as if the host computer sent the packets to itself, making
the system unavailable while the target system tries to respond to itself.
Ping of Death
Ping of Death uses a "ping" utility to create and send an IP packet that exceeds the maximum
65,536 bytes of data allowed by the IP specification. This may cause systems to crash, hang or
reboot.
SPI
Stateful Packet Inspection (SPI) tracks each connection crossing the firewall and makes sure it is
valid. Filtering decisions are based not only on rules but also context. For example, traffic from the
WAN may only be allowed to cross the firewall in response to a request from the LAN.
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10.2 The Firewall Screen
Use this screen to enable firewall and/or SPI. Click Advanced Setup > Firewall to display the
following screen.
Figure 73 Advanced Setup > Firewall
The following table describes the labels in this screen.
Table 49 Advanced > Firewall
LABEL
DESCRIPTION
Firewall
Use this field to enable or disable firewall on your ZyXEL Device.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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11
Filters
11.1 Overview
This chapter introduces three types of filters supported by the ZyXEL Device. You can configure
rules to restrict traffic by IP addresses, MAC addresses, application types and/or URLs.
11.1.1 What You Can Do in the Filter Screens
• Use the URL Filter screen (Section 11.2 on page 144) to block access to web sites.
• Use the Application Filter screen (Section 11.3 on page 145) to allow or deny traffic from
certain types of applications.
• Use the IP/MAC Filter screen (Section 11.4 on page 146) to create IP/MAC filter rules.
11.1.2 What You Need to Know About Filtering
URL
The URL (Uniform Resource Locator) identifies and helps locates resources on a network. On the
Internet the URL is the web address that you type in the address bar of your Internet browser, for
example “http://www.zyxel.com”.
IP/MAC Filter Structure
An IP/MAC filter set consists of one or more filter rules. The ZyXEL Device allows you to configure
up to twelve filter sets with six rules in each set, for a total of 72 filter rules in the system.
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11.2 The URL Filter Screen
Use this screen to block websites by URL. Click Security > Filter > URL Filter. The screen appears
as shown.
Figure 74 Security > Filter > URL Filter
The following table describes the labels in this screen.
Table 50 Access Management > Filter (URL)
LABEL
DESCRIPTION
URL Filter Editing
Active
Use this field to enable or disable the URL filter.
URL Index
Select the index number of the filter.
URL
Enter the URL for the ZyXEL Device to block.
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144
Index
This is the index number of the filter rule.
URL
This is the URL you have configured the ZyXEL Device to block.
Apply
Click this to save your changes.
Delete
Click this to remove the filter rule.
Cancel
Click this to restore your previously saved settings.
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11.3 The Application Filter Screen
Use this screen to allow or deny traffic for certain types of applications. The application filter
provides a convenient way to manage the use of various applications on the network.
Click Security > Filter > Application Filter. The screen appears as shown.
Figure 75 Security > Filter > Application Filter
The following table describes the labels in this screen.
Table 51 Access Management > Filter (Application)
LABEL
DESCRIPTION
Application Filter Editing
Application Filter
Use this field to enable or disable the application filter.
ICQ
Use this field to allow or deny ICQ traffic.
MSN
Use this field to allow or deny MSN traffic.
YMSG
Use this field to allow or deny Yahoo Messenger traffic
Real Audio/Video
Use this field to allow or deny transferring RealPlayer format files.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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11.4 The IP/MAC Filter Screen
Use this screen to create and apply IP/MAC filters. Click Security > Filter > IP/MAC Filter. The
screen appears as shown.
Figure 76 Security > Filter > IP/MAC Filter
The following table describes the labels in this screen.
Table 52 Access Management > Filter (IP/MAC)
LABEL
DESCRIPTION
IP Filter Select
IP Filter Select
Select IP White Filter to configure traffic to allow. Select IP Black
Filter to configure traffic to block.
IP/MAC Filter Set Editing
146
IP/MAC Filter Set Index
Select the index number of the filter set.
Interface
Select the PVC to which to apply the filter.
Direction
Apply the filter to Both, Incoming or Outgoing traffic direction.
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Table 52 Access Management > Filter (IP/MAC) (continued)
LABEL
DESCRIPTION
IP/MAC Filter Rule Editing
IP/MAC Filter Rule Index
Select the index number of the filter rule.
Rule Type
Select IP to allow or block traffic by IP addresses.
Active
Use this field to enable or disable the rule.
Source Start IP Address
Enter the source start IP address of the IP address range for the
packets you wish to filter. This field is ignored if it is 0.0.0.0.
Source End IP Address
Enter the source end IP address of the IP address range for the packets
you wish to filter.
Port Number
Enter the source port of the packets that you wish to filter. The range of
this field is 0 to 65535. This field is ignored if it is 0.
Destination Start IP
Address
Enter the destination start IP address of the IP address range for the
packets you wish to filter. This field is ignored if it is 0.0.0.0.
Destination End IP
Address
Enter the destination end IP address of the IP address range for the
packets you wish to filter.
Port Number
Enter the destination port of the packets that you wish to filter. The
range of this field is 0 to 65535. This field is ignored if it is 0.
Protocol
Select ICMP, TCP or UDP for the upper layer protocol.
Rule Unmatched
Select the action for a packet not matching the rule.
Select Forward to forward traffic immediately and skip checking the
remaining rules. Select Next to check the next rule.
IP Filter Listing
IP Filter Set Index
Select the index number of the filter set from the drop-down list box.
Interface
This is the interface that the filter set applies to.
Direction
The filter set applies to this traffic direction.
This is the index number of the rule in a filter set.
Active
This field shows whether the rule is activated.
Src Start IP/Src End IP
This is the source IP address range.
Dest Start IP/Dest End IP
This is the destination IP address range.
Src Port
This is the source port number.
Dest Port
This is the destination port number.
Protocol
This is the upper layer protocol.
Unmatched
When a packet doesn’t match the rule, this is the action the ZyXEL
Device takes on the packet.
Save
Click this to save your changes.
Delete
Click this to remove the filter rule.
Cancel
Click this to restore your previously saved settings.
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12
Static Route
12.1 Overview
The ZyXEL Device usually uses the default gateway to route outbound traffic from computers on the
LAN to the Internet. To have the ZyXEL Device send data to devices not reachable through the
default gateway, use static routes.
For example, the next figure shows a computer (A) connected to the ZyXEL Device’s LAN interface.
The ZyXEL Device routes most traffic from A to the Internet through the ZyXEL Device’s default
gateway (R1). You create one static route to connect to services offered by your ISP behind router
R2. You create another static route to communicate with a separate network behind a router R3
connected to the LAN.
Figure 77 Example of Static Routing Topology
R1
LAN
WAN
R3
R2
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12.1.1 What You Can Do in the Static Route Screens
Use the Static Route screens (Section 12.2 on page 150) to view and configure IP static routes on
the ZyXEL Device.
12.2 The Static Route Screen
Use this screen to view the static route rules. Click Advanced > Static Route to open the Static
Route screen.
Figure 78 Advanced > Static Route
The following table describes the labels in this screen.
Table 53 Advanced > Static Route
LABEL
DESCRIPTION
This is the number of an individual static route.
Destination
This parameter specifies the IP network address of the final destination. Routing is
always based on network number.
Netmask
This parameter specifies the IP network subnet mask of the final destination.
Gateway
This is the IP address of the gateway. The gateway is a router or switch on the
same network segment as the device's LAN or WAN port. The gateway helps
forward packets to their destinations.
Modify
Click the Edit icon to go to the screen where you can set up a static route on the
ZyXEL Device.
Click the Remove icon to remove a static route from the ZyXEL Device. A window
displays asking you to confirm that you want to delete the route.
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Table 53 Advanced > Static Route
LABEL
DESCRIPTION
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
12.2.1 Static Route Edit
Use this screen to configure the required information for a static route. Select a static route index
number and click Edit. The screen shown next appears.
Figure 79 Advanced > Static Route: Edit
The following table describes the labels in this screen.
Table 54 Advanced > Static Route: Edit
LABEL
DESCRIPTION
Static Route Setup
Destination IP
Address
This parameter specifies the IP network address of the final destination. Routing
is always based on network number. If you need to specify a route to a single
host, use a subnet mask of 255.255.255.255 in the subnet mask field to force the
network number to be identical to the host ID.
IP Subnet Mask
Enter the IP subnet mask here.
Gateway IP
Address
Enter the IP address of the gateway. The gateway is a router or switch on the
same network segment as the device's LAN or WAN port. The gateway helps
forward packets to their destinations.
You can also select a specific WAN PVC as the gateway. See Section 6.3.1 on page
76 to configure additional WAN connections.
Back
Click this to return to the previous screen without saving.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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13
802.1Q/1P
13.1 Overview
This chapter describes how to configure the 802.1Q/1P settings.
A Virtual Local Area Network (VLAN) allows a physical network to be partitioned into multiple logical
networks. A VLAN group can be treated as an individual device. Each group can have its own rules
about where and how to forward traffic. You can assign any ports on the ZyXEL Device to a VLAN
group and configure the settings for the group. You may also set the priority level for traffic
transmitted through the ports.
Figure 80 802.1Q/1P
802.1Q
Ports
VLAN Groups
802.1P
Priority Levels
13.1.1 What You Can Do in the 802.1Q/1P Screens
• Use the Group Setting screen (Section 13.2 on page 154) to activate 802.1Q/1P, specify the
management VLAN group, display the VLAN groups and configure the settings for each VLAN
group.
• Use the Port Setting screen (Section 13.3 on page 157) to configure the PVID for each port.
13.1.2 What You Need to Know About 802.1Q/1P
IEEE 802.1P Priority
IEEE 802.1P specifies the user priority field and defines up to eight separate traffic types by
inserting a tag into a MAC-layer frame that contains bits to define class of service.
IEEE 802.1Q Tagged VLAN
Tagged VLAN uses an explicit tag (VLAN ID) in the MAC header to identify the VLAN membership of
a frame across bridges - they are not confined to the device on which they were created. The VLAN
ID associates a frame with a specific VLAN and provides the information that devices need to
process the frame across the network.
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PVC
A virtual circuit is a logical point-to-point circuit between customer sites. Permanent means that the
circuit is preprogrammed by the carrier as a path through the network. It does not need to be set
up or torn down for each session.
Forwarding Tagged and Untagged Frames
Each port on the device is capable of passing tagged or untagged frames. To forward a frame from
an 802.1Q VLAN-aware device to an 802.1Q VLAN-unaware device, the ZyXEL Device first decides
where to forward the frame and then strips off the VLAN tag. To forward a frame from an 802.1Q
VLAN-unaware device to an 802.1Q VLAN-aware switch, the ZyXEL Device first decides where to
forward the frame, and then inserts a VLAN tag reflecting the ingress port's default VID. The default
PVID is VLAN 1 for all ports, but this can be changed.
Whether to tag an outgoing frame depends on the setting of the egress port on a per-VLAN, perport basis (recall that a port can belong to multiple VLANs). If the tagging on the egress port is
enabled for the VID of a frame, then the frame is transmitted as a tagged frame; otherwise, it is
transmitted as an untagged frame.
13.2 The 802.1Q/1P Group Setting Screen
Use this screen to activate 802.1Q/1P and display the VLAN groups. Click Advanced > 802.1Q/1P
to display the following screen.
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Note: If the WAN interface in the VLAN group is not the default router, you need to create
a static route to communicate with the WAN.
Figure 81 Advanced > 802.1Q/1P > Group Setting
The following table describes the labels in this screen.
Table 55 Advanced > 802.1Q/1P > Group Setting
LABEL
DESCRIPTION
802.1Q/1P
Active
Select this check box to activate the 802.1P/1Q feature.
Summary
This field displays the index number of the VLAN group.
Active
This field displays whether 802.1P/1Q is active for the VLAN group.
VID
This field displays the ID number of the VLAN group.
Port Number
These columns display the VLAN’s settings for each port. A tagged port is
marked as T, an untagged port is marked as U and ports not participating in a
VLAN are marked as “–“.
Modify
Click the Edit button to configure the ports in the VLAN group.
Click the Remove button to delete the VLAN group.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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13.2.1 Editing 802.1Q/1P Group Setting
Use this screen to configure the settings for each VLAN group.
In the 802.1Q/1P screen, click the Edit button from the Modify filed to display the following
screen.
Figure 82 Advanced > 802.1Q/1P > Group Setting > Edit
The following table describes the labels in this screen.
Table 56 Advanced > 802.1Q/1P > Group Setting > Edit
LABEL
DESCRIPTION
Active
Select this check box to activate the group setting.
VLAN ID
Assign a VLAN ID for the VLAN group. The valid VID range is between 1 and
4094.
Default Gateway
Select the default gateway for the VLAN group.
Ports
This field displays the types of ports available to join the VLAN group.
Control
Select Fixed for the port to be a permanent member of the VLAN group.
Select Forbidden if you want to prohibit the port from joining the VLAN group.
156
Tx Tag
Select Tx Tagging if you want the port to tag all outgoing traffic transmitted
through this VLAN. You select this if you want to create VLANs across different
devices and not just the ZyXEL Device.
Back
Click this to return to the previous screen without saving.
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Table 56 Advanced > 802.1Q/1P > Group Setting > Edit (continued)
LABEL
DESCRIPTION
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
13.3 The 802.1Q/1P Port Setting Screen
Use this screen to configure the PVID for each port. Click Advanced > 802.1Q/1P > Port Setting
to display the following screen.
Figure 83 Advanced > 802.1Q/1P > Port Setting
The following table describes the labels in this screen.
Table 57 Advanced > 802.1Q/1P > Port Setting
LABEL
DESCRIPTION
Ports
This field displays the types of ports available to join the VLAN group.
802.1Q PVID
Assign a VLAN ID for the port. The valid VID range is between 1 and 4094. The
ZyXEL Device assigns the PVID to untagged frames or priority-tagged frames
received on this port.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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14
Quality of Service (QoS)
14.1 Overview
Use the QoS screen to set up your ZyXEL Device to use QoS for traffic management.
Quality of Service (QoS) refers to both a network’s ability to deliver data with minimum delay, and
the networking methods used to control bandwidth. QoS allows the ZyXEL Device to group and
prioritize application traffic and fine-tune network performance.
Without QoS, all traffic data are equally likely to be dropped when the network is congested. This
can cause a reduction in network performance and make the network inadequate for time-critical
applications such as video-on-demand.
The ZyXEL Device assigns each packet a priority and then queues the packet accordingly. Packets
assigned with a high priority are processed more quickly than those with low priorities if there is
congestion, allowing time-sensitive applications to flow more smoothly. Time-sensitive applications
include both those that require a low level of latency (delay) and a low level of jitter (variations in
delay) such as Voice over IP (VoIP) or Internet gaming, and those for which jitter alone is a problem
such as Internet radio or streaming video.
In the following figure, your Internet connection has an upstream transmission speed of 50 Mbps.
You configure a classifier to assign the highest priority queue (6) to VoIP traffic from the LAN
interface, so that voice traffic would not get delayed when there is network congestion. Traffic from
the boss’s IP address (192.168.1.23 for example) is mapped to queue 5. Traffic that does not
match these two classes are assigned priority queue based on the internal QoS mapping table on
the ZyXEL Device.
Figure 84 QoS Example
VoIP: Queue 6
DSL
50 Mbps
Boss: Queue 5
IP=192.168.1.23
14.1.1 What You Can Do in the QoS Screens
• Use the QoS screen (Section 14.2 on page 160) to configure QoS settings on the ZyXEL Device.
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• Use the QoS Settings Summary screen (Section 14.2.1 on page 163) to check the summary of
QoS rules and actions you configured for the ZyXEL Device.
14.1.2 What You Need to Know About QoS
802.1p
QoS is used to prioritize source-to-destination traffic flows. All packets in the same flow are given
the same priority. 802.1p is a way of managing traffic in a network by grouping similar types of
traffic together and treating each type as a class. You can use 802.1p to give different priorities to
different packet types.
Tagging and Marking
In a QoS class, you can configure whether to add or change the DiffServ Code Point (DSCP) value,
IEEE 802.1p priority level and VLAN ID number in a matched packet. When the packet passes
through a compatible network, the networking device, such as a backbone switch, can provide
specific treatment or service based on the tag or marker.
Finding Out More
See Section 14.3 on page 164 for advanced technical information on QoS.
14.2 The QoS Screen
Use this screen to enable or disable QoS and have the ZyXEL Device assign priority levels to traffic
according to the port range, IEEE 802.1p priority level and/or IP precedence.
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Click Advanced Setup > QoS to open the screen as shown next.
Figure 85 Advanced Setup > QoS
The following table describes the labels in this screen.
Table 58 Advanced Setup > QoS
LABEL
DESCRIPTION
Quality of Service
QoS
Use this field to turn on QoS to improve your network performance.
You can give priority to traffic that the ZyXEL Device forwards out through the
WAN interface. Give high priority to voice and video to make them run more
smoothly. Similarly, give low priority to many large file downloads so that they do
not reduce the quality of other applications.
Summary
Click this to open a summary table showing the QoS settings. See Section 14.2.1
on page 163 for more details.
Rule
Rule Index
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Select the rule’s index number from the drop-down list box.
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Table 58 Advanced Setup > QoS
LABEL
DESCRIPTION
Active
Use this field to enable or disable the rule.
Application
Select an application from the drop-down list box. The Destination Port Range
and Protocol ID fields may change depending on the type of applications you
choose.
Physical Ports
Select Enet1 to apply the rule to the Ethernet port.
Destination MAC
Type a destination MAC address here. QoS is then applied to traffic containing this
destination MAC address. Leave it blank to apply the rule to all MAC addresses.
IP
Enter a destination IP address in dotted decimal notation. QoS is then applied to
traffic containing this destination IP address. A blank destination IP address
means any destination IP address.
Mask
Enter a destination subnet mask here.
Port Range
Either use the default value set by the application you choose, or enter the port
number to which the rule should be applied.
Source MAC
Type a source MAC address here. QoS is then applied to traffic containing this
source MAC address. Leave it blank to apply the rule to all MAC addresses.
IP
Enter a source IP address in dotted decimal notation. QoS is then applied to traffic
containing this source IP address. A blank source IP address means any source IP
address.
Mask
Enter a source subnet mask here.
Port Range
Enter the port number to which the rule should be applied. 0 means any source
port number. See Appendix E on page 279 for some common services and port
numbers.
Protocol ID
Select an IP protocol type from the drop-down list box.
Vlan ID Range
Enter the source VLAN ID in this field.
IPP/DS Field
Select IPP/TOS to specify an IP precedence range and type of services.
Select DSCP to specify a DiffServ Code Point (DSCP) range.
IP Precedence
Range
Enter a range from 0 to 7 for IP precedence. Zero is the lowest priority and seven
is the highest.
Type of Service
Select a type of service from the drop-down list box.
Available options are: Normal service, Minimize delay, Maximize
throughput, Maximize reliability and Minimize monetary cost.
DSCP Range
Specify a DSCP number between 0 and 63 in this field.
802.1p
Select a priority level (0 to 7) from the drop-down list box.
Action
IPP/DS Field
Select IPP/TOS to specify an IP precedence range and type of services.
Select DSCP to specify a DiffServ Code Point (DSCP) range.
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IP Precedence
Remarking
Enter a range from 0 to 7 to re-assign IP precedence to matched traffic. Zero is
the lowest priority and seven is the highest.
Type of Service
Remarking
Select a type of service to re-assign the priority level to matched traffic.
DSCP
Remarking
Specify a DSCP number between 0 and 63 to re-assign the priority level to
matched traffic.
802.1p
Remarking
Select a priority level (0 to 7) to re-assign the priority level to matched traffic.
Available options are: Normal service, Minimize delay, Maximize
throughput, Maximize reliability and Minimize monetary cost.
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Table 58 Advanced Setup > QoS
LABEL
DESCRIPTION
Queue #
Specify a Low, Medium, High or Highest queue tag to matched traffic. Traffic
assigned to a higher queue gets through faster while traffic in lower queues is
dropped when there is network congestion.
ADD
Click this to add the rule.
DELETE
Click this to remove the rule.
CANCEL
Click this to restore previously saved settings.
14.2.1 The QoS Settings Summary Screen
Use this screen to display a summary of rules and actions configured for the ZyXEL Device. In the
Advanced > QoS screen, click the QoS Settings Summary button to open the following screen.
Figure 86 Advanced Setup > QoS > QoS Settings Summary
The following table describes the labels in this screen.
Table 59 Advanced Setup > QoS > QoS Settings Summary
LABEL
DESCRIPTION
Rules
This is the rule’s index number.
Active
This shows whether the rule is enabled or disabled.
Physical Ports
This is the physical port associated with the rule.
Destination MAC
and IP/Mask Port
Ranges
This is the port range for destination MAC address and IP address.
Source MAC and
IP/Mask Port
Ranges
This is the port range for source MAC address and IP address.
Protocol ID
This is the protocol ID associated with the rule.
VLAN ID
This is the VLAN ID associated with the rule.
IPP/TOS (DSCP)
This shows the IPP/TOS or DSCP settings.
802.1p
This is the 802.1p priority level.
Actions
IPP/TOS (DSCP)
Remarking
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The ZyXEL Device re-assigns the priority values specified in this field to
matched traffic.
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Table 59 Advanced Setup > QoS > QoS Settings Summary (continued)
LABEL
DESCRIPTION
802.1p Remarking
The ZyXEL Device re-assigns the priority levels specified in this field to
matched traffic.
Queue #
The ZyXEL Device assigns the queue level specified in this field to matched
traffic.
14.3 QoS Technical Reference
This section provides some technical background information about the topics covered in this
chapter.
14.3.1 IEEE 802.1p
IEEE 802.1p specifies the user priority field and defines up to eight separate traffic types. The
following table describes the traffic types defined in the IEEE 802.1d standard (which incorporates
the 802.1p).
Table 60 IEEE 802.1p Priority Level and Traffic Type
PRIORITY
LEVEL
TRAFFIC TYPE
Level 7
Typically used for network control traffic such as router configuration messages.
Level 6
Typically used for voice traffic that is especially sensitive to jitter (jitter is the
variations in delay).
Level 5
Typically used for video that consumes high bandwidth and is sensitive to jitter.
Level 4
Typically used for controlled load, latency-sensitive traffic such as SNA (Systems
Network Architecture) transactions.
Level 3
Typically used for “excellent effort” or better than best effort and would include
important business traffic that can tolerate some delay.
Level 2
This is for “spare bandwidth”.
Level 1
This is typically used for non-critical “background” traffic such as bulk transfers that
are allowed but that should not affect other applications and users.
Level 0
Typically used for best-effort traffic.
14.3.2 IP Precedence
Similar to IEEE 802.1p prioritization at layer-2, you can use IP precedence to prioritize packets in a
layer-3 network. IP precedence uses three bits of the eight-bit ToS (Type of Service) field in the IP
header. There are eight classes of services (ranging from zero to seven) in IP precedence. Zero is
the lowest priority level and seven is the highest.
14.3.3 Automatic Priority Queue Assignment
If you enable QoS on the ZyXEL Device, the ZyXEL Device can automatically base on the IEEE
802.1p priority level, IP precedence and/or packet length to assign priority to traffic which does not
match a class.
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The following table shows you the internal layer-2 and layer-3 QoS mapping on the ZyXEL Device.
On the ZyXEL Device, traffic assigned to higher priority queues gets through faster while traffic in
lower index queues is dropped if the network is congested.
Table 61 Internal Layer2 and Layer3 QoS Mapping
LAYER 2
LAYER 3
PRIORITY
QUEUE
IEEE 802.1P USER
PRIORITY
(ETHERNET
PRIORITY)
TOS (IP
PRECEDENCE)
DSCP
000000
000000
>1100
001110
250~1100
IP PACKET
LENGTH (BYTE)
001100
001010
001000
010110
010100
010010
010000
011110
<250
011100
011010
011000
100110
100100
100010
100000
101110
101000
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110000
111000
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15
Dynamic DNS Setup
15.1 Overview
Dynamic DNS allows you to update your current dynamic IP address with one or many dynamic
DNS services so that anyone can contact you (in NetMeeting, CU-SeeMe, etc.). You can also access
your FTP server or Web site on your own computer using a domain name (for instance
myhost.dhs.org, where myhost is a name of your choice) that will never change instead of using an
IP address that changes each time you reconnect. Your friends or relatives will always be able to
call you even if they don't know your IP address.
First of all, you need to have registered a dynamic DNS account with www.dyndns.org. This is for
people with a dynamic IP from their ISP or DHCP server that would still like to have a domain name.
The Dynamic DNS service provider will give you a password or key.
15.1.1 What You Can Do in the DDNS Screen
Use the Dynamic DNS screen (Section 15.2 on page 168) to enable DDNS and configure the DDNS
settings on the ZyXEL Device.
15.1.2 What You Need To Know About DDNS
DYNDNS Wildcard
Enabling the wildcard feature for your host causes *.yourhost.dyndns.org to be aliased to the same
IP address as yourhost.dyndns.org. This feature is useful if you want to be able to use, for example,
www.yourhost.dyndns.org and still reach your hostname.
If you have a private WAN IP address, then you cannot use Dynamic DNS.
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15.2 The Dynamic DNS Screen
Use this screen to change your ZyXEL Device’s DDNS. Click Advanced > Dynamic DNS. The
screen appears as shown.
Figure 87 Advanced > Dynamic DNS
The following table describes the fields in this screen.
Table 62 Advanced > Dynamic DNS
LABEL
DESCRIPTION
Dynamic DNS Setup
Active Dynamic
DNS
Select this check box to use dynamic DNS.
Service Provider
This is the name of your Dynamic DNS service provider.
Dynamic DNS
Type
Select the type of service that you are registered for from your Dynamic DNS
service provider.
Host Name
Type the domain name assigned to your ZyXEL Device by your Dynamic DNS
provider.
You can specify up to two host names in the field separated by a comma (",").
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User Name
Type your user name.
Password
Type the password assigned to you.
Enable Wildcard
Option
Select the check box to enable DynDNS Wildcard.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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16
Remote Management
16.1 Overview
Remote management allows you to determine which services/protocols can access which ZyXEL
Device interface (if any) from which computers.
The following figure shows remote management of the ZyXEL Device coming in from the WAN.
Figure 88 Remote Management From the WAN
LAN
WAN
HTTP
Telnet
Note: When you configure remote management to allow management from the WAN, you
still need to configure a firewall rule to allow access.
You may manage your ZyXEL Device from a remote location via:
• Internet (WAN only)
• LAN only
• LAN and WAN
• None (Disable)
To disable remote management of a service, select Disable in the corresponding Service Access
field.
You may only have one remote management session running at a time. The ZyXEL Device
automatically disconnects a remote management session of lower priority when another remote
management session of higher priority starts. The priorities for the different types of remote
management sessions are as follows.
Telnet
HTTP
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16.1.1 What You Can Do in the Remote Management Screens
• Use the WWW screen (Section 16.2 on page 171) to configure through which interface(s) and
from which IP address(es) users can use HTTP to manage the ZyXEL Device.
• Use the Telnet screen (Section 16.3 on page 171) to configure through which interface(s) and
from which IP address(es) users can use Telnet to manage the ZyXEL Device.
• Use the FTP screen (Section 16.4 on page 172) to configure through which interface(s) and from
which IP address(es) users can use FTP to access the ZyXEL Device.
• Your ZyXEL Device can act as an SNMP agent, which allows a manager station to manage and
monitor the ZyXEL Device through the network. Use the SNMP screen (see Section 16.5 on page
173) to configure through which interface(s) and from which IP address(es) users can use SNMP
to access the ZyXEL Device.
• Use the DNS screen (Section 16.6 on page 176) to configure through which interface(s) and
from which IP address(es) users can send DNS queries to the ZyXEL Device.
• Use the ICMP screen (Section 16.7 on page 177) to set whether or not your ZyXEL Device will
respond to pings and probes for services that you have not made available.
16.1.2 What You Need to Know About Remote Management
Remote Management Limitations
Remote management does not work when:
• You have not enabled that service on the interface in the corresponding remote management
screen.
• You have disabled that service in one of the remote management screens.
• The IP address in the Secured Client IP Address field does not match the client IP address. If
it does not match, the ZyXEL Device will disconnect the session immediately.
• There is already another remote management session with an equal or higher priority running.
You may only have one remote management session running at one time.
• There is a firewall rule that blocks it.
Remote Management and NAT
When NAT is enabled:
• Use the ZyXEL Device’s WAN IP address when configuring from the WAN.
• Use the ZyXEL Device’s LAN IP address when configuring from the LAN.
System Timeout
There is a default system management idle timeout of five minutes (three hundred seconds). The
ZyXEL Device automatically logs you out if the management session remains idle for longer than
this timeout period. The management session does not time out when a statistics screen is polling.
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16.2 The WWW Screen
Use this screen to specify how to connect to the ZyXEL Device from a web browser, such as Internet
Explorer.
Note: If you disable the WWW service in the Remote MGMT > WWW screen, then the
ZyXEL Device blocks all HTTP connection attempts.
16.2.1 Configuring the WWW Screen
Click Advanced > Remote MGMT to display the WWW screen.
Figure 89 Advanced > Remote MGMT > WWW
The following table describes the labels in this screen.
Table 63 Advanced > Remote Management > WWW
LABEL
DESCRIPTION
Server Port
You may change the server port number for a service, if needed. However, you
must use the same port number in order to use that service for remote
management.
Server Access
Select the interface(s) through which a computer may access the ZyXEL Device
using this service.
Secured Client IP
Address
A secured client is a “trusted” computer that is allowed to communicate with the
ZyXEL Device using this service.
Select All to allow any computer to access the ZyXEL Device using this service.
Choose Selected to just allow the computer with the IP address that you specify
to access the ZyXEL Device using this service.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
16.3 The Telnet Screen
You can use Telnet to access the ZyXEL Device’s command line interface. Specify which interfaces
allow Telnet access and from which IP address the access can come.
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Click Advanced > Remote MGMT > Telnet tab to display the screen as shown.
Figure 90 Advanced > Remote MGMT > Telnet
The following table describes the labels in this screen.
Table 64 Advanced > Remote Management > Telnet
LABEL
DESCRIPTION
Server Port
You may change the server port number for a service if needed, however you
must use the same port number in order to use that service for remote
management.
Server Access
Select the interface(s) through which a computer may access the ZyXEL Device
using this service.
Secured Client
IP Address
A secured client is a “trusted” computer that is allowed to communicate with the
ZyXEL Device using this service.
Select All to allow any computer to access the ZyXEL Device using this service.
Choose Selected to just allow the computer with the IP address that you specify
to access the ZyXEL Device using this service.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
16.4 The FTP Screen
You can use FTP (File Transfer Protocol) to upload and download the ZyXEL Device’s firmware and
configuration files. Please see the User’s Guide chapter on firmware and configuration file
maintenance for details. To use this feature, your computer must have an FTP client.
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Use this screen to specify which interfaces allow FTP access and from which IP address the access
can come. To change your ZyXEL Device’s FTP settings, click Advanced > Remote MGMT > FTP.
The screen appears as shown.
Figure 91 Advanced > Remote MGMT > FTP
The following table describes the labels in this screen.
Table 65 Advanced > Remote MGMT > FTP
LABEL
DESCRIPTION
Server Port
You may change the server port number for a service, if needed. However, you
must use the same port number in order to use that service for remote
management.
Server Access
Select the interface(s) through which a computer may access the ZyXEL Device
using this service.
Secured Client IP
Address
A secured client is a “trusted” computer that is allowed to communicate with the
ZyXEL Device using this service.
Select All to allow any computer to access the ZyXEL Device using this service.
Choose Selected to just allow the computer with the IP address that you specify
to access the ZyXEL Device using this service.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
16.5 The SNMP Screen
Simple Network Management Protocol is a protocol used for exchanging management information
between network devices. Your ZyXEL Device supports SNMP agent functionality, which allows a
manager station to manage and monitor the ZyXEL Device through the network. The ZyXEL Device
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supports SNMP version one (SNMPv1) and version two (SNMPv2c). The next figure illustrates an
SNMP management operation.
Figure 92 SNMP Management Model
An SNMP managed network consists of two main types of component: agents and a manager.
An agent is a management software module that resides in a managed device (the ZyXEL Device).
An agent translates the local management information from the managed device into a form
compatible with SNMP. The manager is the console through which network administrators perform
network management functions. It executes applications that control and monitor managed
devices.
The managed devices contain object variables/managed objects that define each piece of
information to be collected about a device. Examples of variables include such as number of
packets received, node port status etc. A Management Information Base (MIB) is a collection of
managed objects. SNMP allows a manager and agents to communicate for the purpose of accessing
these objects.
SNMP itself is a simple request/response protocol based on the manager/agent model. The
manager issues a request and the agent returns responses using the following protocol operations:
• Get - Allows the manager to retrieve an object variable from the agent.
• GetNext - Allows the manager to retrieve the next object variable from a table or list within an
agent. In SNMPv1, when a manager wants to retrieve all elements of a table from an agent, it
initiates a Get operation, followed by a series of GetNext operations.
• Set - Allows the manager to set values for object variables within an agent.
• Trap - Used by the agent to inform the manager of some events.
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16.5.1 Configuring SNMP
To change your ZyXEL Device’s SNMP settings, click Advanced > Remote MGMT > SNMP tab.
The screen appears as shown.
Figure 93 Advanced > Remote MGMT > SNMP
The following table describes the labels in this screen.
Table 66 Advanced > Remote MGMT > SNMP
LABEL
DESCRIPTION
SNMP
Server Port
The SNMP agent listens on port 161 by default. If you change the SNMP server
port to a different number on the ZyXEL Device, for example 8161, then you must
notify people who need to access the ZyXEL Device SNMP agent to use the same
port.
Server Access
Select the interface(s) through which a computer may access the ZyXEL Device
using this service.
Secured Client
IP Address
A secured client is a “trusted” computer that is allowed to access the SNMP agent
on the ZyXEL Device.
Select All to allow any computer to access the SNMP agent.
Choose Selected to just allow the computer with the IP address that you specify
to access the SNMP agent.
SNMP Configuration
Get Community
Enter the Get Community, which is the password for the incoming Get and
GetNext requests from the management station. The default is public and allows
all requests.
Set Community
Enter the Set Community, which is the password for incoming Set requests from
the management station. The default is public and allows all requests.
Trap Community
Type the trap community, which is the password sent with each trap to the SNMP
manager. The default is public and allows all requests.
Trap Destination
Type the IP address of the station to send your SNMP traps to.
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Table 66 Advanced > Remote MGMT > SNMP (continued)
LABEL
DESCRIPTION
Apply
Click Apply to save your changes back to the ZyXEL Device.
Cancel
Click Cancel to begin configuring this screen afresh.
16.6 The DNS Screen
Use DNS (Domain Name System) to map a domain name to its corresponding IP address and vice
versa. Refer to Chapter 7 on page 85 for background information.
Use this screen to set from which IP address the ZyXEL Device will accept DNS queries and on
which interface it can send them your ZyXEL Device’s DNS settings. This feature is not available
when the ZyXEL Device is set to bridge mode. Click Advanced > Remote MGMT > DNS to change
your ZyXEL Device’s DNS settings.
Figure 94 Advanced > Remote Management > DNS
The following table describes the labels in this screen.
Table 67 Advanced > Remote Management > DNS
LABEL
DESCRIPTION
Server Port
The DNS service port number is 53 and cannot be changed here.
Server Access
Select the interface(s) through which a computer may send DNS queries to the
ZyXEL Device.
Secured Client IP
Address
A secured client is a “trusted” computer that is allowed to send DNS queries to
the ZyXEL Device.
Select All to allow any computer to send DNS queries to the ZyXEL Device.
Choose Selected to just allow the computer with the IP address that you specify
to send DNS queries to the ZyXEL Device.
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Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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16.7 The ICMP Screen
To change your ZyXEL Device’s security settings, click Advanced > Remote MGMT > ICMP. The
screen appears as shown.
If an outside user attempts to probe an unsupported port on your ZyXEL Device, an ICMP response
packet is automatically returned. This allows the outside user to know the ZyXEL Device exists.
Your ZyXEL Device supports anti-probing, which prevents the ICMP response packet from being
sent. This keeps outsiders from discovering your ZyXEL Device when unsupported ports are probed.
Note: If you want your device to respond to pings and requests for unauthorized services,
you may also need to configure the firewall anti probing settings to match.
Figure 95 Advanced > Remote Management > ICMP
The following table describes the labels in this screen.
Table 68 Advanced > Remote Management > ICMP
LABEL
DESCRIPTION
ICMP
Internet Control Message Protocol is a message control and error-reporting
protocol between a host server and a gateway to the Internet. ICMP uses
Internet Protocol (IP) datagrams, but the messages are processed by the TCP/IP
software and directly apparent to the application user.
Respond to Ping
on
The ZyXEL Device will not respond to any incoming Ping requests when Disable
is selected. Select LAN to reply to incoming LAN Ping requests. Select WAN to
reply to incoming WAN Ping requests. Otherwise select LAN & WAN to reply to
both incoming LAN and WAN Ping requests.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
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17
Universal Plug-and-Play (UPnP)
17.1 Overview
Universal Plug and Play (UPnP) is a distributed, open networking standard that uses TCP/IP for
simple peer-to-peer network connectivity between devices. A UPnP device can dynamically join a
network, obtain an IP address, convey its capabilities and learn about other devices on the network.
In turn, a device can leave a network smoothly and automatically when it is no longer in use.
17.1.1 What You Can Do in the UPnP Screen
Use the UPnP screen (Section 17.2 on page 179) to enable UPnP on the ZyXEL Device and allow
UPnP-enabled applications to automatically configure the ZyXEL Device.
17.1.2 What You Need to Know About UPnP
Identifying UPnP Devices
UPnP hardware is identified as an icon in the Network Connections folder (Windows XP). Each UPnP
compatible device installed on your network will appear as a separate icon. Selecting the icon of a
UPnP device will allow you to access the information and properties of that device.
NAT Traversal
UPnP NAT traversal automates the process of allowing an application to operate through NAT. UPnP
network devices can automatically configure network addressing, announce their presence in the
network to other UPnP devices and enable exchange of simple product and service descriptions.
NAT traversal allows the following:
• Dynamic port mapping
• Learning public IP addresses
• Assigning lease times to mappings
Windows Messenger is an example of an application that supports NAT traversal and UPnP.
See the NAT chapter for more information on NAT.
Cautions with UPnP
The automated nature of NAT traversal applications in establishing their own services and opening
firewall ports may present network security issues. Network information and configuration may also
be obtained and modified by users in some network environments.
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When a UPnP device joins a network, it announces its presence with a multicast message. For
security reasons, the ZyXEL Device allows multicast messages on the LAN only.
All UPnP-enabled devices may communicate freely with each other without additional configuration.
Disable UPnP if this is not your intention.
UPnP and ZyXEL
ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum UPnP™
Implementers Corp. (UIC). ZyXEL's UPnP implementation supports Internet Gateway Device (IGD)
1.0.
See the following sections for examples of installing and using UPnP.
17.2 The UPnP Screen
Use the following screen to configure the UPnP settings on your ZyXEL Device. Click Advanced >
UPnP to display the screen shown next.
See Section 17.1 on page 178 for more information.
Figure 96 Advanced > UPnP > General
The following table describes the fields in this screen.
Table 69 Advanced > UPnP > General
LABEL
DESCRIPTION
Active the Universal Plug
and Play (UPnP) Feature
Select this check box to activate UPnP. Be aware that anyone could
use a UPnP application to open the web configurator's login screen
without entering the ZyXEL Device's IP address (although you must
still enter the password to access the web configurator).
Allow users to make
configuration changes
through UPnP
Select this check box to allow UPnP-enabled applications to
automatically configure the ZyXEL Device so that they can
communicate through the ZyXEL Device, for example by using NAT
traversal, UPnP applications automatically reserve a NAT forwarding
port in order to communicate with another UPnP enabled device; this
eliminates the need to manually configure port forwarding for the
UPnP enabled application.
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Table 69 Advanced > UPnP > General
LABEL
DESCRIPTION
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
17.3 Installing UPnP in Windows Example
This section shows how to install UPnP in Windows Me and Windows XP.
Installing UPnP in Windows Me
Follow the steps below to install the UPnP in Windows Me.
Click Start and Control Panel. Double-click Add/Remove Programs.
Click on the Windows Setup tab and select Communication in the Components selection box.
Click Details.
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In the Communications window, select the Universal Plug and Play check box in the
Components selection box.
Add/Remove Programs: Windows Setup: Communication: Components
Click OK to go back to the Add/Remove Programs Properties window and click Next.
Restart the computer when prompted.
Installing UPnP in Windows XP
Follow the steps below to install the UPnP in Windows XP.
Click Start and Control Panel.
Double-click Network Connections.
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In the Network Connections window, click Advanced in the main menu and select Optional
Networking Components ….
Network Connections
The Windows Optional Networking Components Wizard window displays. Select Networking
Service in the Components selection box and click Details.
Windows Optional Networking Components Wizard
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In the Networking Services window, select the Universal Plug and Play check box.
Networking Services
Click OK to go back to the Windows Optional Networking Component Wizard window and
click Next.
17.4 Using UPnP in Windows XP Example
This section shows you how to use the UPnP feature in Windows XP. You must already have UPnP
installed in Windows XP and UPnP activated on the ZyXEL Device.
Make sure the computer is connected to a LAN port of the ZyXEL Device. Turn on your computer
and the ZyXEL Device.
Auto-discover Your UPnP-enabled Network Device
Click Start and Control Panel. Double-click Network Connections. An icon displays under
Internet Gateway.
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Right-click the icon and select Properties.
Network Connections
In the Internet Connection Properties window, click Settings to see the port mappings there
were automatically created.
Internet Connection Properties
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You may edit or delete the port mappings or click Add to manually add port mappings.
Internet Connection Properties: Advanced Settings
Internet Connection Properties: Advanced Settings: Add
When the UPnP-enabled device is disconnected from your computer, all port mappings will be
deleted automatically.
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Select Show icon in notification area when connected option and click OK. An icon displays in
the system tray.
System Tray Icon
Double-click on the icon to display your current Internet connection status.
Internet Connection Status
Web Configurator Easy Access
With UPnP, you can access the web-based configurator on the ZyXEL Device without finding out the
IP address of the ZyXEL Device first. This comes helpful if you do not know the IP address of the
ZyXEL Device.
Follow the steps below to access the web configurator.
186
Click Start and then Control Panel.
Double-click Network Connections.
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Chapter 17 Universal Plug-and-Play (UPnP)
Select My Network Places under Other Places.
Network Connections
An icon with the description for each UPnP-enabled device displays under Local Network.
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Right-click on the icon for your ZyXEL Device and select Invoke. The web configurator login screen
displays.
Network Connections: My Network Places
Right-click on the icon for your ZyXEL Device and select Properties. A properties window displays
with basic information about the ZyXEL Device.
Network Connections: My Network Places: Properties: Example
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18
System Settings
18.1 Overview
This chapter shows you how to configure system related settings, such as system time, password,
name, the domain name and the inactivity timeout interval.
18.1.1 What You Can Do in the System Settings Screens
• Use the General screen (Section 18.2 on page 189) to configure system settings.
• Use the Time and Date screen (Section 18.3 on page 190) to set the system time.
18.2 The General Screen
Use this screen to configure system admin password.
Click Maintenance > System to open the General screen.
Figure 97 Maintenance > System > General
The following table describes the labels in this screen.
Table 70 Maintenance > System > General
LABEL
DESCRIPTION
Password
Admin Password
Old
Password
Type the default password or the existing password you use to access the system
in this field.
New
Password
Type your new system password (up to 30 characters). Note that as you type a
password, the screen displays a (*) for each character you type. After you change
the password, use the new password to access the ZyXEL Device.
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Table 70 Maintenance > System > General
LABEL
Retype to
confirm
DESCRIPTION
Type the new password again for confirmation.
Apply
Click this to save your changes.
Cancel
Click this to restore your previously saved settings.
18.3 The Time and Date Screen
Use this screen to configure the ZyXEL Device’s time based on your local time zone. To change your
ZyXEL Device’s time and date, click Maintenance > System > Time and Date. The screen
appears as shown.
Figure 98 Maintenance > System > Time and Date
The following table describes the fields in this screen.
Table 71 Maintenance > System > Time and Date
LABEL
DESCRIPTION
Current Time and Date
Current Time
This field displays the time of your ZyXEL Device.
Each time you reload this page, the ZyXEL Device synchronizes the time with
the time server.
Current Date
This field displays the date of your ZyXEL Device.
Each time you reload this page, the ZyXEL Device synchronizes the date with
the time server.
Time and Date Setup
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