ZyXEL Communications G220V2 WLAN USB Adapter User Manual ZyXEL G 220F User s Guide V1 00 Oct 2004

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Date Submitted	2006-03-17 00:00:00
Date Available	2006-03-17 00:00:00
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Document Title	ZyXEL G-220F User’s Guide V1.00 (Oct 2004)
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Document Author:	Cindy Yang

ZyXEL G-220 v2
802.11g WLAN USB Adapter
User’s Guide
Version 1.00
Edition 1
3/2006
ZyXEL G-220 v2 User’s Guide
Copyright
Copyright © 2006 by ZyXEL Communications Corporation.
The contents of this publication may not be reproduced in any part or as a whole, transcribed,
stored in a retrieval system, translated into any language, or transmitted in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or
otherwise, without the prior written permission of ZyXEL Communications Corporation.
Published by ZyXEL Communications Corporation. All rights reserved.
Disclaimer
ZyXEL does not assume any liability arising out of the application or use of any products, or
software described herein. Neither does it convey any license under its patent rights nor the
patent rights of others. ZyXEL further reserves the right to make changes in any products
described herein without notice. This publication is subject to change without notice.
Trademarks
ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL
Communications, Inc. Other trademarks mentioned in this publication are used for
identification purposes only and may be properties of their respective owners.
Copyright
ZyXEL G-220 v2 User’s Guide
Federal Communications
Commission (FCC) Interference
Statement
The device complies with Part 15 of FCC rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference.
• This device must accept any interference received, including interference that may cause
undesired operations.
This equipment has been tested and found to comply with the limits for a Class B digital
device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable
protection against harmful interference in a commercial environment. This equipment
generates, uses, and can radiate radio frequency energy, and if not installed and used in
accordance with the instructions, may cause harmful interference to radio communications.
If this equipment does cause harmful interference to radio/television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the
interference by one or more of the following measures:
1 Reorient or relocate the receiving antenna.
2 Increase the separation between the equipment and the receiver.
3 Connect the equipment into an outlet on a circuit different from that to which the receiver
is connected.
4 Consult the dealer or an experienced radio/TV technician for help.
Notice 1
Changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate the equipment.
This product has been designed for the WLAN 2.4 GHz network throughout the EC region and
Switzerland, with restrictions in France.
Caution
1 The equipment complies with FCC RF radiation exposure limits set forth for an
uncontrolled environment, under 47 CFR 2.1093 paragraph (d)(2).
2 This Transmitter must not be co-located or operating in conjunction with any other
antenna or transmitter.
Federal Communications Commission (FCC) Interference Statement
ZyXEL G-220 v2 User’s Guide
Certifications
1 Go to www.zyxel.com.
2 Select your product from the drop-down list box on the
ZyXEL home page to go to that product's page.
3 Select the certification you wish to view from this
page.
注意 !
依據 低功率電波輻射性電機管理辦法
第十二條 經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用
者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。
第十四條 低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現
有干擾現象時，應立即停用，並改善至無干擾時方得繼續使用。
前項合法通信，指依電信規定作業之無線電信。低功率射頻電機須忍
受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。
Federal Communications Commission (FCC) Interference Statement
ZyXEL G-220 v2 User’s Guide
ZyXEL Limited Warranty
ZyXEL warrants to the original end user (purchaser) that this product is free from any defects
in materials or workmanship for a period of up to two (2) years from the date of purchase.
During the warranty period, and upon proof of purchase, should the product have indications
of failure due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or
replace the defective products or components without charge for either parts or labor, and to
whatever extent it shall deem necessary to restore the product or components to proper
operating condition. Any replacement will consist of a new or re-manufactured functionally
equivalent product of equal or higher value, and will be solely at the discretion of ZyXEL.
This warranty shall not apply if the product has been modified, misused, tampered with,
damaged by an act of God, or subjected to abnormal working conditions.
Note
Repair or replacement, as provided under this warranty, is the exclusive remedy of the
purchaser. This warranty is in lieu of all other warranties, express or implied, including any
implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in
no event be held liable for indirect or consequential damages of any kind to the purchaser.
To obtain the services of this warranty, contact ZyXEL's Service Center for your Return
Material Authorization number (RMA). Products must be returned Postage Prepaid. It is
recommended that the unit be insured when shipped. Any returned products without proof of
purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of
ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products
will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty
gives you specific legal rights, and you may also have other rights that vary from country to
country.
Online Registration
Register your product online to receive e-mail notices of firmware upgrades and information
at www.zyxel.com for global products, or at www.us.zyxel.com for North American products.
ZyXEL Limited Warranty
ZyXEL G-220 v2 User’s Guide
Customer Support
Please have the following information ready when you contact customer support.
•
•
•
•
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.
METHOD SUPPORT E-MAIL
TELEPHONEA
WEB SITE
FAX
FTP SITE
REGULAR MAIL
LOCATION
CORPORATE
HEADQUARTERS
(WORLDWIDE)
CZECH REPUBLIC
DENMARK
FINLAND
SALES E-MAIL
support@zyxel.com.tw +886-3-578-3942
sales@zyxel.com.tw
info@cz.zyxel.com
+420-241-091-350
info@cz.zyxel.com
+420-241-091-359
support@zyxel.dk
+45-39-55-07-00
sales@zyxel.dk
+45-39-55-07-07
support@zyxel.fi
+358-9-4780-8411
sales@zyxel.fi
+358-9-4780 8448
info@zyxel.fr
+33-4-72-52-97-97
HUNGARY
KAZAKHSTAN
Customer Support
ZyXEL Communications
Czech s.r.o.
Modranská 621
143 01 Praha 4 - Modrany
Ceská Republika
www.zyxel.dk
ZyXEL Communications A/S
Columbusvej
2860 Soeborg
Denmark
www.zyxel.fi
ZyXEL Communications Oy
Malminkaari 10
00700 Helsinki
Finland
www.zyxel.fr
ZyXEL France
1 rue des Vergers
Bat. 1 / C
69760 Limonest
France
www.zyxel.de
ZyXEL Deutschland GmbH.
Adenauerstr. 20/A2 D-52146
Wuerselen
Germany
www.zyxel.hu
ZyXEL Hungary
48, Zoldlomb Str.
H-1025, Budapest
Hungary
www.zyxel.kz
ZyXEL Kazakhstan
43, Dostyk ave.,Office 414
Dostyk Business Centre
050010, Almaty
Republic of Kazakhstan
ZyXEL Communications Inc.
1130 N. Miller St.
Anaheim
CA 92806-2001
U.S.A.
support@zyxel.de
+49-2405-6909-0
sales@zyxel.de
+49-2405-6909-99
support@zyxel.hu
+36-1-3361649
info@zyxel.hu
+36-1-3259100
http://zyxel.kz/support
+7-3272-590-698
sales@zyxel.kz
+7-3272-590-689
support@zyxel.com
1-800-255-4101
+1-714-632-0882
www.us.zyxel.com
sales@zyxel.com
+1-714-632-0858
ftp.us.zyxel.com
support@zyxel.no
+47-22-80-61-80
www.zyxel.no
sales@zyxel.no
+47-22-80-61-81
NORTH AMERICA
NORWAY
www.zyxel.cz
+33-4-72-52-19-20
FRANCE
GERMANY
+886-3-578-2439
www.zyxel.com
ZyXEL Communications Corp.
www.europe.zyxel.com 6 Innovation Road II
Science Park
ftp.zyxel.com
Hsinchu 300
Taiwan
ftp.europe.zyxel.com
ZyXEL Communications A/S
Nils Hansens vei 13
0667 Oslo
Norway
ZyXEL G-220 v2 User’s Guide
TELEPHONEA
WEB SITE
SALES E-MAIL
FAX
FTP SITE
info@pl.zyxel.com
+48-22-5286603
www.pl.zyxel.com
ZyXEL Communications
ul.Emilli Plater 53
00-113 Warszawa
Poland
www.zyxel.ru
ZyXEL Russia
Ostrovityanova 37a Str.
Moscow, 117279
Russia
www.zyxel.es
ZyXEL Communications
Alejandro Villegas 33
1º, 28043 Madrid
Spain
www.zyxel.se
ZyXEL Communications A/S
Sjöporten 4, 41764 Göteborg
Sweden
www.ua.zyxel.com
ZyXEL Ukraine
13, Pimonenko Str.
Kiev, 04050
Ukraine
ZyXEL Communications UK
Ltd.,11 The Courtyard,
Eastern Road, Bracknell,
Berkshire, RG12 2XB,
United Kingdom (UK)
METHOD SUPPORT E-MAIL
REGULAR MAIL
LOCATION
POLAND
RUSSIA
SPAIN
SWEDEN
+48-22-5206701
http://zyxel.ru/support
+7-095-542-89-29
sales@zyxel.ru
+7-095-542-89-25
support@zyxel.es
+34-902-195-420
sales@zyxel.es
+34-913-005-345
support@zyxel.se
+46-31-744-7700
sales@zyxel.se
+46-31-744-7701
support@ua.zyxel.com +380-44-247-69-78
UKRAINE
sales@ua.zyxel.com
+380-44-494-49-32
support@zyxel.co.uk
+44-1344 303044
08707 555779 (UK only)
www.zyxel.co.uk
sales@zyxel.co.uk
+44-1344 303034
ftp.zyxel.co.uk
UNITED KINGDOM
A. “+” is the (prefix) number you enter to make an international telephone call.
Customer Support
ZyXEL G-220 v2 User’s Guide
Table of Contents
Copyright .................................................................................................................. 3
Federal Communications Commission (FCC) Interference Statement ............... 4
ZyXEL Limited Warranty.......................................................................................... 6
Customer Support.................................................................................................... 7
Table of Contents ..................................................................................................... 9
List of Figures ........................................................................................................ 13
List of Tables .......................................................................................................... 15
Preface .................................................................................................................... 17
Chapter 1
Getting Started ....................................................................................................... 19
1.1 About Your ZyXEL G-220 v2 ............................................................................19
1.1.1 Application Overview ................................................................................19
1.1.1.1 Infrastructure ...................................................................................19
1.1.1.2 Ad-Hoc ............................................................................................20
1.1.1.3 Access Point Mode ........................................................................21
1.2 ZyXEL G-220 v2 Hardware and Utility Installation .............................................21
1.3 Configuration Methods ......................................................................................21
1.4 Windows XP Users Only ....................................................................................21
1.5 Accessing the ZyXEL Utility ..............................................................................22
1.6 Connecting to a Wireless LAN ..........................................................................22
1.6.1 Site Survey ...............................................................................................23
1.7 ZyXEL G-220 v2 Modes ...................................................................................24
1.7.1 Change ZyXEL G-220 v2 Mode ...............................................................25
1.8 ZyXEL Utility Screen Summary .........................................................................25
Chapter 2
Wireless LAN Network ........................................................................................... 27
2.1 Wireless LAN Overview ....................................................................................27
2.1.1 SSID .........................................................................................................27
2.1.2 Channel ....................................................................................................27
2.1.3 Transmission Rate (Tx Rate) ....................................................................27
2.2 Wireless LAN Security Overview ......................................................................27
2.2.1 Data Encryption with WEP ........................................................................28
Table of Contents
ZyXEL G-220 v2 User’s Guide
2.2.2 IEEE 802.1x ..............................................................................................28
2.2.2.1 EAP Authentication .........................................................................28
2.2.3 WPA(2) .....................................................................................................29
2.2.3.1 Encryption ......................................................................................29
2.2.3.2 User Authentication ........................................................................29
2.2.4 WPA(2)-PSK Application Example ...........................................................29
2.2.5 WPA(2) with RADIUS Application Example ..............................................30
2.3 Encryption Type .................................................................................................31
2.4 Preamble Type ...................................................................................................31
2.5 Introduction to OTIST
.....................................................................................32
2.5.1 Enabling OTIST ........................................................................................32
2.5.1.1 AP ...................................................................................................32
2.5.1.2 Wireless Client ................................................................................33
2.5.2 Starting OTIST .........................................................................................33
2.5.3 Notes on OTIST ........................................................................................34
Chapter 3
Wireless Station Mode Configuration .................................................................. 35
3.1 Wireless Station Mode Overview ......................................................................35
3.2 The Link Info Screen ..........................................................................................35
3.2.1 Trend Chart ...............................................................................................36
3.3 The Site Survey Screen .....................................................................................37
3.3.1 Connecting to a WLAN Network ...............................................................38
3.3.2 Security Settings .......................................................................................39
3.3.2.1 WEP Encryption ..............................................................................39
3.3.2.2 WPA-PSK/WPA2-PSK .....................................................................40
3.3.2.3 WPA/WPA2 .....................................................................................41
3.3.2.4 IEEE 802.1x ....................................................................................42
3.3.3 Confirm Save Screen ................................................................................43
3.4 The Profile Screen .............................................................................................44
3.4.1 Adding a New Profile ................................................................................46
3.5 The Adapter Screen ...........................................................................................50
Chapter 4
Access Point Mode Configuration........................................................................ 53
4.1 Access Point Mode Introduction ........................................................................53
4.1.1 Additional Setup Requirements ................................................................53
4.2 The Link Info Screen .........................................................................................53
4.3 The Configuration Screen .................................................................................54
4.4 The MAC Filter Screen ......................................................................................57
10
Table of Contents
ZyXEL G-220 v2 User’s Guide
Chapter 5
Maintenance ........................................................................................................... 59
5.1 The About Screen .............................................................................................59
5.2 Uninstalling the ZyXEL Utility ............................................................................59
5.3 Upgrading the ZyXEL Utility ..............................................................................60
Chapter 6
Troubleshooting .................................................................................................. 63
6.1 Problems Starting the ZyXEL Utility Program ....................................................63
6.2 Problem Connecting to an Access Point ............................................................63
6.3 Problem with the Link Status ..............................................................................64
6.4 Problems Communicating With Other Computers .............................................64
Appendix A
Product Specifications .......................................................................................... 65
Appendix B
Access Point Mode Setup Example ..................................................................... 67
Appendix C
Disable Windows XP Wireless LAN Configuration Tool..................................... 71
Appendix D
Management with Wireless Zero Configuration .................................................. 77
Appendix E
Types of EAP Authentication ................................................................................ 89
Appendix F
Setting up Your Computer’s IP Address.............................................................. 95
Index...................................................................................................................... 107
Table of Contents
11
ZyXEL G-220 v2 User’s Guide
12
Table of Contents
ZyXEL G-220 v2 User’s Guide
List of Figures
Figure 1 Application: Infrastructure ....................................................................... 20
Figure 2 Application: Ad-Hoc ................................................................................ 20
Figure 3 Application: Access Point Mode .............................................................. 21
Figure 4 ZyXEL Utility: System Tray Icon .............................................................. 22
Figure 5 ZyXEL Utility: Site Survey ....................................................................... 23
Figure 6 ZyXEL Utility: Security Setting ................................................................ 24
Figure 7 ZyXEL Utility: Link Info ............................................................................ 24
Figure 8 ZyXEL Utility: Change Modes .................................................................. 25
Figure 9 Menu Summary: Station Mode ................................................................ 26
Figure 10 Menu Summary: AP Mode .................................................................... 26
Figure 11 WPA-PSK Authentication ....................................................................... 30
Figure 12 WPA(2) with RADIUS Application Example ........................................... 31
Figure 13 Station Mode: Link Info ......................................................................... 35
Figure 14 Station Mode: Link Info: Trend Chart .................................................... 37
Figure 15 Station Mode: Site Survey ..................................................................... 37
Figure 16 Station Mode: Security Settings: WEP ................................................. 39
Figure 17 Station Mode: Security Settings: WPA-PSK/WPA2-PSK ....................... 40
Figure 18 Station Mode: Security Settings: WPA/WPA2 ........................................ 41
Figure 19 Station Mode: Security Settings: 802.1x ................................................ 42
Figure 20 Confirm Save Screen ............................................................................ 43
Figure 21 Station Mode: Profile ............................................................................ 45
Figure 22 Station Mode: Profile: Add a New Profile .............................................. 46
Figure 23 Station Mode: Profile: Select a Channel ............................................... 47
Figure 24 Station Mode: Profile: Wireless Settings ............................................... 48
Figure 25 Station Mode: Profile: Security Settings ................................................ 49
Figure 26 Station Mode: Profile: Confirm New Settings ........................................ 49
Figure 27 Station Mode: Profile: Activate the Profile ............................................. 50
Figure 28 Station Mode: Adapter .......................................................................... 50
Figure 29 Access Point Mode: Link Info ................................................................ 54
Figure 30 Access Point Mode: Configuration ........................................................ 55
Figure 31 Access Point Mode: MAC Filter ............................................................ 57
Figure 32 About ..................................................................................................... 59
Figure 33 Uninstall: Confirm ................................................................................. 60
Figure 34 Uninstall: Finish ..................................................................................... 60
Figure 35 Windows 2000: Start ............................................................................. 67
Figure 36 Windows 2000: Network and Dial-up Connections ............................... 68
Figure 37 Windows 2000: Network Properties ...................................................... 68
Figure 38 WIndows 2000: Network Properties: Select Network Adapter .............. 69
List of Figures
13
ZyXEL G-220 v2 User’s Guide
Figure 39 Windows 2000: Local Network .............................................................. 69
Figure 40 Windows XP: System Tray Icon ............................................................. 71
Figure 41 Windows XP SP1: Wireless Network Connection .................................. 72
Figure 42 Windows XP SP2: Wireless Network Connection .................................. 72
Figure 43 Windows XP SP1: Wireless Network Connection Properties ................ 73
Figure 44 Windows XP SP2: Wireless Network Connection Properties ................ 73
Figure 45 Windows XP SP1: Wireless Network Connection Status ....................... 74
Figure 46 Windows XP SP2: Wireless Network Connection Status ....................... 74
Figure 47 Windows XP SP1: Wireless Network Connection Properties ................ 75
Figure 48 Windows XP SP2: Wireless Network Connection Properties ................ 75
Figure 49 Windows XP SP2: WZC Not Available .................................................. 77
Figure 50 Windows XP SP2: System Tray Icon ..................................................... 78
Figure 51 Windows XP SP2: Wireless Network Connection Status ....................... 78
Figure 52 Windows XP SP1: Wireless Network Connection Status ....................... 79
Figure 53 Windows XP SP2: Wireless Network Connection .................................. 79
Figure 54 Windows XP SP1: Wireless Network Connection Properties ................ 80
Figure 55 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSK .. 81
Figure 56 Windows XP SP2: Wireless Network Connection: No Security ............ 81
Figure 57 Windows XP: Wireless (network) properties: Association ..................... 82
Figure 58 Windows XP: Wireless (network) properties: Authentication ................. 83
Figure 59 Windows XP: Protected EAP Properties ................................................ 84
Figure 60 Windows XP: Smart Card or other Certificate Properties ...................... 85
Figure 61 Windows XP SP2: Wireless Networks: Preferred Networks .................. 87
Figure 62 Windows XP SP1: Wireless Networks: Preferred Networks .................. 87
Figure 63 WPA-PSK Authentication ....................................................................... 93
Figure 64 WPA(2) with RADIUS Application Example ........................................... 93
Figure 65 WIndows 95/98/Me: Network: Configuration .......................................... 96
Figure 66 Windows 95/98/Me: TCP/IP Properties: IP Address .............................. 97
Figure 67 Windows 95/98/Me: TCP/IP Properties: DNS Configuration ................. 98
Figure 68 Windows XP: Start Menu ....................................................................... 99
Figure 69 Windows XP: Control Panel ................................................................... 99
Figure 70 Windows XP: Control Panel: Network Connections: Properties ............ 100
Figure 71 Windows XP: Local Area Connection Properties ................................... 100
Figure 72 Windows XP: Advanced TCP/IP Settings .............................................. 101
Figure 73 Windows XP: Internet Protocol (TCP/IP) Properties .............................. 102
Figure 74 Macintosh OS 8/9: Apple Menu ............................................................. 103
Figure 75 Macintosh OS 8/9: TCP/IP ..................................................................... 103
Figure 76 Macintosh OS X: Apple Menu ................................................................ 104
Figure 77 Macintosh OS X: Network ...................................................................... 105
14
List of Figures
ZyXEL G-220 v2 User’s Guide
List of Tables
Table 1 ZyXEL Utility: System Tray Icon ............................................................... 22
Table 2 ZyXEL Utility: Menu Screen Summary ..................................................... 26
Table 3 Station Mode: Link Info ............................................................................. 36
Table 4 Station Mode: Link Info: Trend Chart ........................................................ 37
Table 5 Station Mode: Site Survey ........................................................................ 38
Table 6 Station Mode: Security Settings: WEP ..................................................... 39
Table 7 Station Mode: Security Settings: WPA-PSK/WPA2-PSK .......................... 41
Table 8 Station Mode: Security Settings: WPA/WPA2 ........................................... 41
Table 9 Station Mode: Security Settings: 802.1x ................................................... 42
Table 10 Confirm Save Screen ............................................................................. 44
Table 11 Station Mode: Profile ............................................................................... 45
Table 12 Station Mode: Profile: Add a New Profile ................................................ 46
Table 13 Station Mode: Profile: Select a Channel ................................................. 48
Table 14 Station Mode: Adapter ............................................................................ 50
Table 15 Access Point Mode: Link Info ................................................................. 54
Table 16 Access Point Mode: Configuration ......................................................... 55
Table 17 Access Point Mode: MAC Filter .............................................................. 57
Table 18 About ...................................................................................................... 59
Table 19 Troubleshooting Starting ZyXEL Utility Program .................................... 63
Table 20 Troubleshooting Access Point Connection Problem ............................... 63
Table 21 Troubleshooting Link Quality .................................................................. 64
Table 22 Troubleshooting Communication Problem .............................................. 64
Table 23 Product Specifications ............................................................................ 65
Table 24 Windows XP SP2: System Tray Icon ...................................................... 78
Table 25 Windows XP SP2: Wireless Network Connection .................................. 80
Table 26 Windows XP: Wireless Networks ........................................................... 81
Table 27 Windows XP: Wireless (network) properties: Association ...................... 82
Table 28 Windows XP: Wireless (network) properties: Authentication .................. 83
Table 29 Windows XP: Protected EAP Properties ................................................ 85
Table 30 Windows XP: Smart Card or other Certificate Properties ....................... 86
Table 31 Comparison of EAP Authentication Types .............................................. 90
Table 32 Wireless Security Relational Matrix ........................................................ 94
List of Tables
15
ZyXEL G-220 v2 User’s Guide
16
List of Tables
ZyXEL G-220 v2 User’s Guide
Preface
Congratulations on your purchase of the ZyXEL G-220 v2 802.11g WLAN USB Adapter.
Your ZyXEL G-220 v2 is easy to install and configure.
About This User's Guide
This manual is designed to guide you through the configuration of your ZyXEL G-220 v2 for
its various applications.
Related Documentation
• Supporting Disk
Refer to the included CD for support documents.
• Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. They
contain hardware installation/connection information.
• ZyXEL Glossary and Web Site
Please refer to www.zyxel.com for an online glossary of networking terms and additional
support documentation.
User Guide Feedback
Help us help you. E-mail all User Guide-related comments, questions or suggestions for
improvement to techwriters@zyxel.com.tw or send regular mail to The Technical Writing
Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based Industrial Park,
Hsinchu, 300, Taiwan. Thank you.
Syntax Conventions
• “Enter” means for you to type one or more characters. “Select” or “Choose” means for
you to use one predefined choice.
• Mouse action sequences are denoted using a comma. For example, “In Windows, click
Start, Settings and then Control Panel” means first click the Start button, then point
your mouse pointer to Settings and then click Control Panel.
• “e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.
• The ZyXEL G-220 v2 802.11g WLAN USB Adapter may be referred to as the ZyXEL
G-220 v2 in this user’s guide.
Preface
17
ZyXEL G-220 v2 User’s Guide
Graphics Icons Key
Wireless Access Point
Computer
Notebook Computer
Server
Modem
Wireless Signal
Telephone
Switch
Router
Internet Cloud
18
Preface
ZyXEL G-220 v2 User’s Guide
CHAPTER 1
Getting Started
This chapter introduces the ZyXEL G-220 v2 and prepares you to use the ZyXEL Utility.
1.1 About Your ZyXEL G-220 v2
The ZyXEL G-220 v2 is an IEEE 802.11g compliant wireless LAN adapter.
The following lists the main features of your ZyXEL G-220 v2. See the product specifications
in the appendix for detailed features.
• Automatic rate selection.
• Security: WEP (Wired Equivalent Privacy), IEEE 802.1x, WPA-PSK, WPA (Wi-Fi
Protected Access), WPA2-PSK and WPA2
• Proprietary SoftAP feature turns your ZyXEL G-220 v2 into an access point (AP).
• A built-in antenna
• Driver and utility support for Windows 98 Second Edition, Windows ME, Windows 2000
and Windows XP.
1.1.1 Application Overview
This section describes some network applications for the ZyXEL G-220 v2.
1.1.1.1 Infrastructure
To connect to a network via an Access Point (AP), set the ZyXEL G-220 v2 network type to
Infrastructure. Through the AP, you can access the Internet or the wired network behind the
AP.
Chapter 1 Getting Started
19
ZyXEL G-220 v2 User’s Guide
Figure 1 Application: Infrastructure
1.1.1.2 Ad-Hoc
In case you prefer to set up a small independent wireless workgroup without an AP, use the
Ad-Hoc mode.
Ad-hoc mode does not require an AP or a wired network. Two or more wireless clients
communicate directly to each other.
Figure 2 Application: Ad-Hoc
20
Chapter 1 Getting Started
ZyXEL G-220 v2 User’s Guide
1.1.1.3 Access Point Mode
You can set the ZyXEL G-220 v2 in access point mode. The following figure shows a
network example.
Figure 3 Application: Access Point Mode
In the example, the ZyXEL G-220 v2 is installed on computer A and set to operate in access
point mode. Computer A shares Internet connection to the wireless LAN, so wireless stations
B and C can access the Internet.
1.2 ZyXEL G-220 v2 Hardware and Utility Installation
Follow the instructions in the Quick Start Guide to install the ZyXEL Utility and make
hardware connections.
1.3 Configuration Methods
To configure your ZyXEL G-220 v2, use one of the following applications:
• Wireless Zero Configuration (WZC) (recommended for Windows XP)
• ZyXEL Utility (required when you want to use the ZyXEL G-220 v2 as an access point)
• Odyssey Client Manager (not supplied)
Note: Do NOT use the Windows XP configuration tool or the Odyssey Client Manager
and the ZyXEL Utility at the same time.
Refer to the Odyssey Client Manager documentation for more information.
1.4 Windows XP Users Only
Note: When you use the ZyXEL Utility, it automatically disables the Windows XP
wireless configuration tool.
Refer to the appendices on how to use WZC to manage the ZyXEL G-220 v2.
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1.5 Accessing the ZyXEL Utility
After you install and start the ZyXEL Utility, an icon for the ZyXEL Utility appears in the
system tray.
Note: When the ZyXEL Utility system tray icon displays, the ZyXEL G-220 v2 is
installed properly.
When you use the ZyXEL Utility, it automatically disables the Windows XP
wireless configuration tool.
Figure 4 ZyXEL Utility: System Tray Icon
The color of the ZyXEL Utility system tray icon indicates the status of the ZyXEL G-220 v2.
Refer to the following table for details.
Table 1 ZyXEL Utility: System Tray Icon
COLOR
DESCRIPTION
Red
The ZyXEL G-220 v2 is operating in wireless station mode but is not connected to a
wireless network.
Green
The ZyXEL G-220 v2 is operating in wireless station mode and connected to a wireless
network.
Pale Blue
The ZyXEL G-220 v2 is operating in access point mode.
Double-click on the ZyXEL Wireless LAN Utility icon in the system tray to open the ZyXEL
Utility. The ZyXEL Utility screens are similar in all Microsoft Windows versions. Screens for
Windows XP are shown.
Note: Click the
window.
icon (located in the top right corner) to display the on-line help
1.6 Connecting to a Wireless LAN
This section shows you how to associate with a network using the ZyXEL Utility. You can
either manually connect to a network or configure a profile to have the ZyXEL G-220 v2
automatically connect to a specific network. Otherwise, configure nothing and leave the
ZyXEL G-220 v2 to automatically scan for and connect to any other available network
without security.
See the next chapters for detailed field descriptions.
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1.6.1 Site Survey
After you install the ZyXEL Utility and then insert the ZyXEL G-220 v2, follow the steps
below to connect to a network using the Site Survey screen.
1 Make sure a wireless network is available and within range.
2 Open the ZyXEL Utility and click the Site Survey tab to open the screen as shown next.
3 Click Scan to search for available wireless networks.
Figure 5 ZyXEL Utility: Site Survey
4 To join a network, either click an SSID in the table and then click Connect or doubleclick an SSID.
5 If the wireless security is activated for the selected wireless network, the Security
Setting screen displays. This screen varies according to the network’s encryption
method. Configure the same security settings as the associated network.
Note: If the selected network is unavailable or the security settings are not correct,
the ZyXEL G-220 v2 cannot connect to a network.
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Figure 6 ZyXEL Utility: Security Setting
6 Verify that you have successfully connected to the selected network and check the
network information in the Link Info screen. If the ZyXEL G-220 v2 is not connected to
a network, the fields in this screen are blank.
Figure 7 ZyXEL Utility: Link Info
1.7 ZyXEL G-220 v2 Modes
You can set your ZyXEL G-220 v2 to operate in either wireless station or access point (AP)
modes.
In wireless station mode, your ZyXEL G-220 v2 must connect to a peer wireless station or an
AP to take part in your wireless network.
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In access point mode, your ZyXEL G-220 v2 functions as an access point. This allows you to
set up your wireless network without using a dedicated AP device. Up to 16 wireless stations
can associate to the ZyXEL G-220 v2 to form a wireless network. Refer to Section 1.7.1 on
page 25 and Chapter 4 on page 53 for more information.
Note: With WZC, you cannot use the ZyXEL G-220 v2 as an access point.
1.7.1 Change ZyXEL G-220 v2 Mode
To change between the modes, select either the Station Mode or AP Mode option in any
ZyXEL Utility screens.
Figure 8 ZyXEL Utility: Change Modes
Note: Wait for about five seconds for the ZyXEL Utility to complete the mode change.
The current mode is indicated by the color of the check box.
1.8 ZyXEL Utility Screen Summary
This sections describes the ZyXEL Utility screens.
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Figure 9 Menu Summary: Station Mode
Figure 10 Menu Summary: AP Mode
The following table describes the menus.
Table 2 ZyXEL Utility: Menu Screen Summary
TAB
DESCRIPTION
Station Mode
Link Info
Use this screen to see your current connection status, configuration and data rate
statistics.
Site Survey
Use this screen to
• scan for a wireless network
• configure wireless security (if activated on the selected network).
• connect to a wireless network.
Profile
Use this screen to add, delete, edit or activate a profile with a set of wireless and
security settings.
Adaptor
Use this screen to configure a transfer rate, enable power saving and use OTIST
(One-Touch Intelligent Security Technology).
AP Mode
26
Link Info
Use this screen to see your current connection status, configuration and data rate
statistics.
Configuration
Use this screen to configure wireless LAN settings.
MAC Filter
Use this screen to configure which computer(s) you want access to the wireless
LAN through the ZyXEL G-220 v2.
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CHAPTER 2
Wireless LAN Network
This chapter provides background information on wireless LAN network.
2.1 Wireless LAN Overview
This section describes the wireless LAN network terms and applications.
2.1.1 SSID
The SSID (Service Set Identity) is a unique name shared among all wireless devices in a
wireless network. Wireless devices must have the same SSID to communicate with each other.
2.1.2 Channel
A radio frequency used by a wireless device is called a channel.
2.1.3 Transmission Rate (Tx Rate)
The ZyXEL G-220 v2 provides various transmission (data) rate options for you to select.
Options include Fully Auto, 1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps, 9 Mbps, 11 Mbps, 12
Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps and 54 Mbps. In most networking scenarios,
the factory default Fully Auto setting proves the most efficient. This setting allows your
ZyXEL G-220 v2 to operate at the maximum transmission (data) rate. When the
communication quality drops below a certain level, the ZyXEL G-220 v2 automatically
switches to a lower transmission (data) rate. Transmission at lower data speeds is usually more
reliable. However, when the communication quality improves again, the ZyXEL G-220 v2
gradually increases the transmission (data) rate again until it reaches the highest available
transmission rate. You can select any of the above options. If you wish to balance speed versus
reliability, select 54 Mbps in a networking environment where you are certain that all wireless
devices can communicate at the highest transmission (data) rate. 1 Mbps or 2 Mbps are used
often in networking environments where the range of the wireless connection is more
important than speed.
Note: With USB1.0/1.1, the ZyXEL G-220 v2 can only transmit at up to 11Mbps.
2.2 Wireless LAN Security Overview
Wireless LAN security is vital to your network to protect wireless communications.
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Configure the wireless LAN security using the Configuration or the Profile Security Setting
screen. If you do not enable any wireless security on your ZyXEL G-220 v2, the ZyXEL G220 v2’s wireless communications are accessible to any wireless networking device that is in
the coverage area.
2.2.1 Data Encryption with WEP
WEP (Wired Equivalent Privacy) encryption scrambles all data packets transmitted between
the ZyXEL G-220 v2 and the AP or other wireless stations to keep network communications
private. Both the wireless stations and the access points must use the same WEP key for data
encryption and decryption.
There are two ways to create WEP keys in your ZyXEL G-220 v2.
• Automatic WEP key generation based on a “password phrase” called a passphrase. The
passphrase is case sensitive. You must use the same passphrase for all WLAN adapters
with this feature in the same WLAN.
For WLAN adapters without the passphrase feature, you can still take advantage of this
feature by writing down the four automatically generated WEP keys from the Security
Setting screen of the ZyXEL Utility and entering them manually as the WEP keys in the
other WLAN adapter(s).
• Enter the WEP keys manually.
Your ZyXEL G-220 v2 allows you to configure up to four 64-bit, 128-bit or 256-bit WEP
keys and only one key is used as the default key at any one time.
2.2.2 IEEE 802.1x
The IEEE 802.1x standard outlines enhanced security methods for both the authentication of
wireless stations and encryption key management. Authentication can be done using an
external RADIUS server.
2.2.2.1 EAP Authentication
EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the
IEEE 802.1x transport mechanism in order to support multiple types of user authentication. By
using EAP to interact with an EAP-compatible RADIUS server, an access point helps a
wireless station and a RADIUS server perform authentication.
The type of authentication you use depends on the RADIUS server and an intermediary AP(s)
that supports IEEE 802.1x. The ZyXEL G-220 v2 supports EAP-TLS and EAP-PEAP. Refer
to Appendix E on page 89 for descriptions.
For EAP-TLS authentication type, you must first have a wired connection to the network and
obtain the certificate(s) from a certificate authority (CA). A certificate (also called digital IDs)
can be used to authenticate users and a CA issues certificates and guarantees the identity of
each certificate owner.
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2.2.3 WPA(2)
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2 (IEEE
802.11i) is a wireless security standard that defines stronger encryption, authentication and
key management than WPA.
Key differences between WPA(2) and WEP are improved data encryption and user
authentication.
If both an AP and the wireless clients support WPA2 and you have an external RADIUS
server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server,
you should use WPA2-PSK (WPA2-Pre-Shared Key) that only requires a single (identical)
password entered into each access point, wireless gateway and wireless client. As long as the
passwords match, a wireless client will be granted access to a WLAN.
If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending
on whether you have an external RADIUS server or not.
Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is
less secure than WPA or WPA2.
2.2.3.1 Encryption
Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol
(TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA and WPA2 use Advanced
Encryption Standard (AES) in the Counter mode with Cipher block chaining Message
authentication code Protocol (CCMP) to offer stronger encryption than TKIP.
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. The common-password approach makes WPA(2)-PSK susceptible to
brute-force password-guessing attacks but it’s still an improvement over WEP as it employs a
consistent, single, alphanumeric password to derive a PMK which is used to generate unique
temporal encryption keys. This prevent all wireless devices sharing the same encryption keys.
(a weakness of WEP).
2.2.3.2 User Authentication
WPA and WPA2 apply IEEE 802.1x and Extensible Authentication Protocol (EAP) to
authenticate wireless stations using an external RADIUS database. WPA2 reduces the number
of key exchange messages from six to four (CCMP 4-way handshake) and shortens the time
required to connect to a network. Other WPA2 authentication features that are different from
WPA include key caching and pre-authentication. These two features are optional and may not
be supported in all wireless devices.
2.2.4 WPA(2)-PSK Application Example
A WPA(2)s-PSK application looks as follows.
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1 First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key
(PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters
(including spaces and symbols).
2 The AP checks each client's password and (only) allows it to join the network if it
matches its password.
3 The AP and wireless clients use the pre-shared key to generate a common PMK.
4 The AP and wireless clients use the TKIP or AES encryption process to encrypt data
exchanged between them.
Figure 11 WPA-PSK Authentication
2.2.5 WPA(2) with RADIUS Application Example
You need the IP address of the RADIUS server, its port number (default is 1812), and the
RADIUS shared secret. A WPA(2) application example with an external RADIUS server
looks as follows. "A" is the RADIUS server. "DS" is the distribution system.
1 The AP passes the wireless client's authentication request to the RADIUS server.
2 The RADIUS server then checks the user's identification against its database and grants
or denies network access accordingly.
3 The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then
sets up a key hierarchy and management system, using the pair-wise key to dynamically
generate unique data encryption keys to encrypt every data packet that is wirelessly
communicated between the AP and the wireless clients.
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Figure 12 WPA(2) with RADIUS Application Example
2.3 Encryption Type
The IEEE 802.11b/g standard describes a simple encryption method between the wireless
stations and AP. Three encryption types are defined: Auto, Open System and Shared Key.
• Open System mode is implemented for ease-of-use and when security is not an issue.
The wireless station and the AP do not share a secret key. Thus the wireless stations can
associate with any AP and listen to any data transmitted plaintext.
• Shared Key mode involves a shared secret key to authenticate the wireless station to the
AP. This requires you to enable the wireless LAN security and use same settings on both
the wireless station and the AP.
• Auto authentication mode allows the ZyXEL G-220 v2 to switch between the open
system and shared key modes automatically. Use the auto mode if you do not know the
authentication mode of the other wireless stations.
2.4 Preamble Type
Preamble is used to signal that data is coming to the receiver.
Short preamble increases performance as less time sending preamble means more time for
sending data. All IEEE 802.11b/g compliant wireless adapters support long preamble, but not
all support short preamble.
Select Long preamble if you are unsure what preamble mode the wireless adapters support,
and to provide more reliable communications in busy wireless networks.
Select Short preamble if you are sure the wireless adapters support it, and to provide more
efficient communications.
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Select Auto to have the ZyXEL G-220 v2 automatically use short preamble when all access
point/wireless stations support it, otherwise the ZyXEL G-220 v2 uses long preamble.
Note: The ZyXEL G-220 v2 and the access point/wireless stations MUST use the
same preamble mode in order to communicate.
2.5 Introduction to OTIST
In a wireless network, the wireless clients must have the same SSID and security settings as
the access point (AP) or wireless router (we will refer to both as “AP” here) in order to
associate with it. Traditionally this meant that you had to configure the settings on the AP and
then manually configure the exact same settings on each wireless client.
OTIST (One-Touch Intelligent Security Technology) allows you to transfer your AP’s SSID
and WEP or WPA-PSK security settings to wireless clients that support OTIST and are within
transmission range. You can also choose to have OTIST generate a WPA-PSK key for you if
you didn’t configure one manually.
2.5.1 Enabling OTIST
You must enable OTIST on both the AP and wireless client before you start transferring
settings.
We use the Prestige 334WT in this guide as an example. Screens may vary slightly for your
ZyXEL devices.
Note: The AP and wireless client(s) MUST use the same Setup key.
2.5.1.1 AP
On the Prestige 334WT, you can enable OTIST using the Reset button or the web
configurator. If you use the Reset button, the default (01234567) or previous saved (through
the web configurator) Setup key is used to encrypt the settings that you want to transfer.
Hold in the Reset button for one or two seconds.
Note: If you hold in the Reset button too long, the device will reset to the factory
defaults!
In the web configurator, go to the Wireless LAN main screen and then select OTIST. To
change the Setup key, enter zero to eight printable characters. To have OTIST automatically
generate a WPA-PSK key, select the Yes check box. If you manually configured a WEP key
or a WPA-PSK key and you also selected this check box, then the key you manually
configured is used.
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2.5.1.2 Wireless Client
Start the ZyXEL Utility and click the Adapter tab. Select the OTIST check box, enter the
same Setup Key as your AP’s and click Save.
2.5.2 Starting OTIST
Note: You must click Start in the AP OTIST web configurator screen and in the
wireless client(s) Adapter screen all within three minutes (at the time of
writing). You can start OTIST in the wireless clients and AP in any order but
they must all be within range and have OTIST enabled.
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See the user’s guide for more information.
1 In the AP, a web configurator screen pops
up showing you the security settings to
transfer. After reviewing the settings, click
OK.
2 This screen appears while OTIST settings are being transferred. It closes when the
transfer is complete.
• In the wireless client, you see this screen if
it can't find an OTIST-enabled AP (with the
same Setup key). Click OK to go back to
the ZyXEL utility main screen.
• If there is more than one OTIST-enabled AP within range, you see a screen asking you
to select one AP to get settings from.
2.5.3 Notes on OTIST
1 If you enabled OTIST in the wireless client, you see this screen each time you start the
utility. Click Yes for it to search for an OTIST-enabled AP.
2 If an OTIST-enabled wireless client loses its wireless connection for more than ten
seconds, it will search for an OTIST-enabled AP for up to one minute. (If you manually
have the wireless client search for an OTIST-enabled AP, there is no timeout; click
Cancel in the OTIST progress screen to stop the search.)
3 When the wireless client finds an OTIST-enabled AP, you must still click Start in the AP
OTIST web configurator screen or hold in the Reset button (for one or two seconds) for
the AP to transfer settings.
4 If you change the SSID or the keys on the AP after using OTIST, you need to run OTIST
again or enter them manually in the wireless client(s).
5 If you configure OTIST to generate a WPA-PSK key, this key changes each time you run
OTIST. Therefore, if a new wireless client joins your wireless network, you need to run
OTIST on the AP and ALL the wireless clients again.
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CHAPTER 3
Wireless Station Mode
Configuration
This chapter shows you how to configure your ZyXEL G-220 v2 in wireless station mode.
3.1 Wireless Station Mode Overview
To set your ZyXEL G-220 v2 in wireless station mode, refer to Section 1.7.1 on page 25.
3.2 The Link Info Screen
When the ZyXEL Utility starts, the Link Info screen displays, showing the current
configuration and connection status of your ZyXEL G-220 v2.
Figure 13 Station Mode: Link Info
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ZyXEL G-220 v2 User’s Guide
The following table describes the labels in this screen.
Table 3 Station Mode: Link Info
LABEL
DESCRIPTION
AP Mode
Station Mode
Use the check box to set the ZyXEL G-220 v2 to operate in wireless station or
access point mode. Refer to Section 1.7.1 on page 25 for more information.
Wireless Network
Status
Profile Name
This is the name of the profile you are currently using.
Network Name
(SSID)
The SSID identifies the Service Set to which a wireless station is associated. This
field displays the name of the wireless device to which the ZyXEL G-220 v2 is
associated.
AP MAC Address
This field displays the MAC address of the wireless device to which the ZyXEL G220 v2 is associated.
Network Type
This field displays the network type (Infrastructure(BSS) or Ad Hoc) of the
wireless network.
Transmission Rate This field displays the current transmission rate of the ZyXEL G-220 v2 in megabits
per second (Mbps).
Security
This field displays whether data encryption is activated (WEP (WEP or 802.1x),
TKIP (WPA/WPA-PSK/WPA2/WPA2-PSK), AES (WPA/WPA-PSK/WPA2/WPA2PSK)) or inactive (DISABLE).
Channel
This field displays the radio channel the ZyXEL G-220 v2 is currently using.
Status
This field displays the authentication type of the wireless network.
Statistics
Transmit Rate
This field displays the current data transmission rate in kilobits per second (Kbps).
Receive Rate
This field displays the current data receiving rate in kilobits per second (Kbps).
Authentication
This field displays the authentication method of the ZyXEL G-220 v2.
Wireless Mode
This field displays the wireless standard (B or G) of the wireless device.
Total Transmit
This field displays the total number of data frames transmitted.
Total Receive
This field displays the total number of data frames received.
Signal Strength
This field displays the signal strength of the ZyXEL G-220 v2.
Trend Chart
Click this button to display the real-time statistics of the data rate in kilobits per
second (Kbps).
Signal Strength
The status bar shows the strength of the signal.
Link Quality
The status bar shows the quality of the signal.
3.2.1 Trend Chart
Click Trend Chart in the Link Info screen to display a screen as shown below. Use this
screen to view real-time data traffic statistics.
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Figure 14 Station Mode: Link Info: Trend Chart
The following table describes the labels in this screen.
Table 4 Station Mode: Link Info: Trend Chart
LABEL
DESCRIPTION
Transmit
This field displays the current data transmission rate in kilobits per second (Kbps).
Receive
This field displays the current data receiving rate in kilobits per second (Kbps).
3.3 The Site Survey Screen
Use the Site Survey screen to scan for and connect to a wireless network automatically.
Figure 15 Station Mode: Site Survey
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The following table describes the labels in this screen.
Table 5 Station Mode: Site Survey
LABEL
DESCRIPTION
Available Network
List
Click a column heading to sort the entries.
or
denotes that the wireless device is in infrastructure mode and the wireless
security is activated.
denotes that the wireless device is in infrastructure mode but the wireless
security is deactivated.
denotes that the wireless device is in Ad-Hoc mode and the wireless
security is activated.
denotes that the wireless device is in Ad-Hoc mode but the wireless
security is deactivated.
SSID
This field displays the SSID (Service Set IDentifier) of each wireless device.
Channel
This field displays the channel number used by each wireless device.
Signal
This field displays the signal strength of each wireless device.
Scan
Click Scan to search for available wireless devices within transmission range.
Connect
Click Connect to associate to the selected wireless device.
Site Info
Click an entry in the Available Network List table to display the information of the
selected wireless device.
Network Type
This field displays the network type (Infrastructure or Ad Hoc) of the wireless
device.
Channel
This field displays the channel number used by each wireless device.
Encryption
This field shows whether data encryption is activated (WEP (WEP or 802.1x),
WPA, WPA-PSK, WPA2, WPA2-PSK) or inactive (Disabled).
MAC address
This field displays the MAC address of the wireless device.
Surveyed at
This field displays the time when the wireless device is scanned.
3.3.1 Connecting to a WLAN Network
Follow the steps below to connect to a WLAN network using the Site Survey screen.
1 Click Scan to search for all available wireless networks within range.
2 To join a network, click an entry in the table to select a wireless network and then click
Connect or double-click an entry.
3 If the wireless security is activated for the selected wireless network, the Security
Setting screen displays. You must set the related fields in the Security Setting screen to
the same security settings as the associated wireless device. Refer to Section 3.3.2 on
page 39 for more information.
Otherwise click the Exit button and connect to another wireless network without data
encryption.
4 Verify that you have successfully connected to the selected network and check the
network information in the Link Info screen.
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3.3.2 Security Settings
When you configure the ZyXEL G-220 v2 to connect to a network with wireless security
activated and the security settings are disabled on the ZyXEL G-220 v2, the screen varies
according to the encryption method used by the selected network.
3.3.2.1 WEP Encryption
Figure 16 Station Mode: Security Settings: WEP
The following table describes the labels in this screen.
Table 6 Station Mode: Security Settings: WEP
LABEL
DESCRIPTION
Security Settings
WEP
Select 64 Bits, 128 Bits or 256 Bits to activate WEP encryption and then fill in the
related fields.
Select Disable to deactivate WEP encryption.
Encryption Type
Select an encryption type. Choices are SHARED and OPEN. Refer to Section 2.3
on page 31 for more information.
Pass Phrase
Enter a passphrase of up to 63 case-sensitive printable characters. As you enter
the passphrase, the ZyXEL G-220 v2 automatically generates four different WEP
keys and displays it in the key field below. Refer to Section 2.2.1 on page 28 for
more information.
At the time of writing, you cannot use passphrase to generate 256-bit WEP keys.
Transmit Key
Select a default WEP key to use for data encryption. The key displays in the field
below.
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Table 6 Station Mode: Security Settings: WEP (continued)
LABEL
DESCRIPTION
Key x (where x is a Select this option if you want to manually enter the WEP keys. Enter the WEP key
number between 1 in the field provided.
and 4)
If you select 64 Bits in the WEP field.
Enter either 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for
example, 11AA22BB33) for HEX key type.
or
Enter 5 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9”
(for example, MyKey) for ASCII key type.
If you select 128 Bits in the WEP field,
Enter either 26 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for
example, 00112233445566778899AABBCC) for HEX key type
or
Enter 13 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9”
(for example, MyKey12345678) for ASCII key type.
If you select 256 Bits in the WEP field,
Enter either 58 hexadecimal digits in the range of "A-F", "a-f" and "0-9" (for
example,
0000111122223333444455556666777788889999AAAABBBBCCCC000011)
for HEX key type
or
Enter 29 ASCII characters (case sensitive) ranging from "a-z", "A-Z" and "0-9"
(for example, MyKey111122223333444455556678) for ASCII key type.
Note: The values for the WEP keys must be set up exactly the
same on all wireless devices in the same wireless LAN.
ASCII WEP keys are case sensitive.
Back
Click Back to go to the Site Survey screen to select and connect to another
network.
Next
Click Next to confirm your selections and advance to the Confirm Save screen.
Refer to Section 3.3.3 on page 43.
Exit
Click Exit to return to the Site Survey screen without saving.
3.3.2.2 WPA-PSK/WPA2-PSK
Figure 17 Station Mode: Security Settings: WPA-PSK/WPA2-PSK
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The following table describes the labels in this screen.
Table 7 Station Mode: Security Settings: WPA-PSK/WPA2-PSK
LABEL
DESCRIPTION
Encryption Type
The encryption mechanisms used for WPA/WPA2 and WPA-PSK/WPA2-PSK are
the same. The only difference between the two is that WPA-PSK/WPA2-PSK uses
a simple common password, instead of user-specific credentials.
Select the encryption type (TKIP or AES) for data encryption.
Refer to Section 2.2.3 on page 29 for more information.
Pre-Shared Key
Type a pre-shared key (same as the AP or peer device) of between 8 and 63 casesensitive ASCII characters (including spaces and symbols) or 64 hexadecimal
characters.
Back
Click Back to go to the Site Survey screen to select and connect to another
network.
Next
Click Next to confirm your selections and advance to the Confirm Save screen.
Refer to Section 3.3.3 on page 43.
Exit
Click Exit to return to the Site Survey screen without saving.
3.3.2.3 WPA/WPA2
Figure 18 Station Mode: Security Settings: WPA/WPA2
The following table describes the labels in this screen.
Table 8 Station Mode: Security Settings: WPA/WPA2
LABEL
DESCRIPTION
Encryption Type
The encryption mechanisms used for WPA/WPA2 and WPA-PSK/WPA2-PSK are
the same. The only difference between the two is that WPA-PSK/WPA2-PSK uses
a simple common password, instead of user-specific credentials.
Select the encryption type (TKIP or AES) for data encryption.
Refer to Section 2.2.3 on page 29 for more information.
Authentication
Type
Select an authentication method from the drop down list. Options are TLS and
PEAP.
Login Name
Enter a user name.
This is the user name that you or an administrator set up on a RADIUS server.
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Table 8 Station Mode: Security Settings: WPA/WPA2
LABEL
DESCRIPTION
Password
This field is not available when you select TLS in the Authentication Type field.
Enter the password associated with the user name above.
Certificate
This field is only available when you select TLS in the Authentication Type field.
Select a certificate from the drop-down list box.
Note: You must first have a wired connection to a network and
obtain the certificate(s) from a certificate authority (CA).
Consult your network administrator for more information.
Validate Server
Certificate
Select the check box to check the certificate of the authentication server.
PEAP Inner EAP
This field is only available when you select PEAP in the Authentication Type
field.
The PEAP protocol is MS CHAP v2.
Back
Click Back to go to the Site Survey screen to select and connect to another
network.
Next
Click Next to confirm your selections and advance to the Confirm Save screen.
Refer to Section 3.3.3 on page 43.
Exit
Click Exit to return to the Site Survey screen without saving.
3.3.2.4 IEEE 802.1x
Configure IEEE 802.1x security with various authentication methods in this screen.
Figure 19 Station Mode: Security Settings: 802.1x
The following table describes the labels in this screen.
Table 9 Station Mode: Security Settings: 802.1x
42
LABEL
DESCRIPTION
Authentication
Type
Select an authentication method from the drop down list. Options are TLS and
PEAP.
Login Name
Enter a user name.
This is the user name that you or an administrator set up on a RADIUS server.
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Table 9 Station Mode: Security Settings: 802.1x
LABEL
DESCRIPTION
Password
This field is not available when you select TLS in the Authentication Type field.
Enter the password associated with the user name above.
Certificate
This field is only available when you select TLS in the Authentication Type field.
Select a certificate from the drop-down list box.
Note: You must first have a wired connection to a network and
obtain the certificate(s) from a certificate authority (CA).
Consult your network administrator for more information.
Validate Server
Certificate
Select the check box to check the certificate of the authentication server.
PEAP Inner EAP
This field is only available when you select PEAP in the Authentication Type
field.
The PEAP protocol is MS CHAP v2.
Back
Click Back to go to the Site Survey screen to select and connect to another
network.
Next
Click Next to confirm your selections and advance to the Confirm Save screen.
Refer to Section 3.3.3 on page 43.
Exit
Click Exit to return to the Site Survey screen without saving.
3.3.3 Confirm Save Screen
Use the Confirm Save screen to confirm and save the security settings.
Figure 20 Confirm Save Screen
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The following table describes the labels in this screen.
Table 10 Confirm Save Screen
LABEL
DESCRIPTION
Security Setting
Network Name
This field displays the SSID previously entered.
Network Type
This field displays the network type (Infrastructure or Ad Hoc) of the wireless
device.
Channel
This field displays the channel number used by the profile.
Security
This field shows whether data encryption is activated (WEP, WPA, WPA2, WPAPSK, WPA2-PSK or 802.1x) or inactive (Disabled).
Back
Click Back to return to the previous screen.
Save
Click Save to save the changes back to the ZyXEL G-220 v2 and display the Link
Info screen.
Exit
Click Exit to discard changes and return to the Site Survey screen.
3.4 The Profile Screen
A profile is a set of wireless parameters that you need to connect to a wireless network. With a
profile activated, each time you start the ZyXEL G-220 v2, it automatically scans for the
specific SSID and joins that network with the pre-defined wireless security settings. If the
specified network is not available, the ZyXEL G-220 v2 cannot connect to a network.
If you do not configure and activate a profile, each time you start the ZyXEL G-220 v2, the
ZyXEL G-220 v2 uses the default profile to connect to any available network with security
disabled.
The default profile is a profile that allows you to connect to any SSID without security.
Click the Profile tab in the ZyXEL Utility program to display the Profile screen as shown
next.
The profile function allows you to save the wireless network settings in this screen, or use one
of the pre-configured network profiles.
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Figure 21 Station Mode: Profile
The following table describes the labels in this screen.
Table 11 Station Mode: Profile
LABEL
DESCRIPTION
Profile List
Click a column heading to sort the entries.
or
denotes that the wireless device is in infrastructure mode and the wireless
security is activated.
denotes that the wireless device is in infrastructure mode but the wireless
security is deactivated.
denotes that the wireless device is in Ad-Hoc mode and the wireless
security is activated.
denotes that the wireless device is in Ad-Hoc mode but the wireless
security is deactivated.
Profile Name
This is the name of the pre-configured profile.
SSID
This is the SSID of the wireless network to which the selected profile associate.
Connect
To use a previously saved network profile, select a pre-configured profile name in
the table and click Connect.
Add
To add a new profile into the table, click Add.
Delete
To delete an existing wireless network configuration, select a profile in the table
and click Delete.
Edit
To edit an existing wireless network configuration, select a profile in the table and
click Edit.
Profile Info
The following fields display detail information of the selected profile in the Profile
List table.
Network Type
This field displays the network type (Infrastructure or Ad Hoc) of the profile.
SSID
This field displays the SSID (Service Set IDentifier) of the profile.
Channel
This field displays the channel number used by the profile.
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Table 11 Station Mode: Profile (continued)
LABEL
DESCRIPTION
Security
This field shows whether data encryption is activated (WEP (WEP or 802.1x),
WPA, WPA-PSK, WPA2, WPA2-PSK) or inactive (DISABLE).
Transmission Rate This field displays the transmission speed of the selected profile in megabits per
second (Mbps).
3.4.1 Adding a New Profile
Follow the steps below to add a new profile.
1 Click Add in the Profile screen. An Add New Profile screen displays as shown next.
Click Next to continue.
Figure 22 Station Mode: Profile: Add a New Profile
The following table describes the labels in this screen.
Table 12 Station Mode: Profile: Add a New Profile
LABEL
DESCRIPTION
Add New Profile
46
Profile Name
Enter a descriptive name in this field.
SSID
Select an available wireless device in the Scan Info table and click Select, or enter
the SSID of the wireless device to which you want to associate in this field
manually. Otherwise, enter Any to have the ZyXEL G-220 v2 associate to any AP
or roam between any infrastructure wireless networks.
Network Type
Select the Infrastructure radio button to associate to an AP. Select the Ad-Hoc
radio button to associate to a peer computer.
Next
Click Next to go to the next screen.
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Table 12 Station Mode: Profile: Add a New Profile (continued)
LABEL
DESCRIPTION
Exit
Click Exit to go back to the previous screen without saving.
Scan Info
This table displays the information of the available wireless networks within the
transmission range.
or
denotes that the wireless device is in infrastructure mode and the wireless
security is activated.
denotes that the wireless device is in infrastructure mode but the wireless
security is deactivated.
denotes that the wireless device is in Ad-Hoc mode and the wireless
security is activated.
denotes that the wireless device is in Ad-Hoc mode but the wireless security
is deactivated.
SSID
This field displays the SSID (Service Set IDentifier) of each wireless device.
Scan
Click Scan to search for available wireless devices within transmission range.
Select
Select an available wireless device in the table and click Select to add it to this
profile.
Whenever you activate this profile, the ZyXEL G-220 v2 associates to the selected
wireless network only.
2 If you select the Infrastructure network type in the previous screen, skip to step 3. If you
select the Ad-Hoc network type in the previous screen, a screen displays as follows.
Select a channel number and click Next to continue.
Note: To associate to an ad-hoc network, you must use the same channel as the peer
computer.
Figure 23 Station Mode: Profile: Select a Channel
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The following table describes the labels in this screen.
Table 13 Station Mode: Profile: Select a Channel
LABEL
DESCRIPTION
Wireless Settings
Channel
Select a channel number from the drop-down list box. To associate to an ad-hoc
network, you must use the same channel as the peer computer.
3 If you select Infrastructure network type in the first screen, select WEP, WPA, WPA2,
WPA-PSK, WPA2-PSK or 802.1x from the drop-down list box to enable data
encryption. If you select Ad-Hoc network type in the first screen, you can only use WEP
encryption method. Otherwise, select DISABLE to allow the ZyXEL G-220 v2 to
communicate with the access points or other peer wireless computers without any data
encryption and skip to step 5.
Figure 24 Station Mode: Profile: Wireless Settings
4 The screen varies depending on the encryption method you select in the previous screen.
The settings must be exactly the same on the APs or other peer wireless computers as
they are on the ZyXEL G-220 v2. Refer to Section 3.3.2 on page 39 for detailed
information on wireless security configuration.
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Figure 25 Station Mode: Profile: Security Settings
5 This read-only screen shows a summary of the new profile settings. Verify that the
settings are correct. Click Save to save and go to the next screen. Click Back to return to
the previous screen. Otherwise, click Exit to go back to the Profile screen without
saving.
Figure 26 Station Mode: Profile: Confirm New Settings
6 To use this network profile, click the Activate Now button. Otherwise, click the Activate
Later button.
Note: Once you activate a profile, the ZyXEL Utility will use that profile the next time it
is started.
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Figure 27 Station Mode: Profile: Activate the Profile
3.5 The Adapter Screen
To set the advanced features on the ZyXEL G-220 v2, click the Adapter tab.
Figure 28 Station Mode: Adapter
The following table describes the labels in this screen.
Table 14 Station Mode: Adapter
LABEL
DESCRIPTION
Adapter Setting
Transmission Rate Select a transmission speed from the drop-down list box. Choose from Fully Auto
(default), 1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps, 9 Mbps, 11 Mbps, 12 Mbps, 18
Mbps, 24 Mbps, 36 Mbps, 48 Mbps, and 54 Mbps.
Preamble Type
50
Select a preamble type. Choices are Long, Short and Auto.The default setting is
Auto.
Refer to Section 2.4 on page 31 for more information
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Table 14 Station Mode: Adapter (continued)
LABEL
DESCRIPTION
Power Saving
Mode
Select Maximum Power Save or Fast Power Save to save power (especially for
notebook computers). This forces the ZyXEL G-220 v2 to go to sleep mode when it
is not transmitting data.
When you select Continuous Access Mode, the ZyXEL G-220 v2 will never go to
sleep mode.
OTIST (OneTouch Intelligent
Security
Technology)
Select this check box to enable OTIST.
Setup Key
Enter the same setup key (up to eight printable characters) as the ZyXEL AP or
wireless router to which you want to associate. The default OTIST setup key is
"01234567".
Note: If you change the OTIST setup key on the ZyXEL AP or
wireless router, you must also make the same change here.
Start
Click Start to encrypt the wireless security data using the setup key and have the
ZyXEL AP or wireless router set your ZyXEL G-220 v2 to use the same wireless
settings as the ZyXEL AP or wireless router. You must also activate and start
OTIST on the ZyXEL AP or wireless router at the same time.
The process takes three minutes to complete
Save
Click Save to save the changes back to the ZyXEL G-220 v2 and return to the Link
Info screen.
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CHAPTER 4
Access Point Mode
Configuration
This chapter shows you how to configure your ZyXEL G-220 v2 in access point mode.
4.1 Access Point Mode Introduction
To set your ZyXEL G-220 v2 as an Access Point (AP), refer to Section 1.7.1 on page 25.
In access point mode, your ZyXEL G-220 v2 functions as an access point. This allows you to
set up your wireless networks without using a dedicated AP device. Up to 16 wireless stations
can associate to the ZyXEL G-220 v2.
4.1.1 Additional Setup Requirements
To bridge your wired and wireless network using the ZyXEL G-220 v2, the following
requirements must be met:
1 The ZyXEL G-220 v2 must be installed on a computer connected to the wired network.
2 Either bridge the two interfaces (wireless and wired) on the computer (using the
Configuration screen of the ZyXEL utility in Windows XP) or configure network
sharing (refer to Appendix B on page 67 for an example).
3 Set the wireless station’s IP address to be dynamic if you want the wireless stations to
access the wired network or the Internet through the ZyXEL G-220 v2. Refer to
Appendix F on page 95.
4.2 The Link Info Screen
Select AP Mode and wait for about five seconds to display the screen as shown.
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Figure 29 Access Point Mode: Link Info
The following table describes the labels in this screen.
Table 15 Access Point Mode: Link Info
LABEL
DESCRIPTION
Status
SSID
This field displays the name that identifies your ZyXEL G-220 v2 in the wireless
LAN network.
Current Channel
This field displays the radio channel the ZyXEL G-220 v2 is currently using.
Transmission Rate This field displays the current transmission rate of the ZyXEL G-220 v2 in megabits
per second (Mbps).
Security
This field shows whether data encryption is activated (WEP) or inactive (Disable).
MAC
This field displays the MAC address of the ZyXEL G-220 v2.
Output Power
This field shows the strength of the ZyXEL G-220 v2’s antenna gain or
transmission power.
Association List
This table lists up to 16 wireless clients that are currently connected to the ZyXEL
G-220 v2.
denotes a wireless client without WEP security.
denotes a wireless client with WEP security enabled.
MAC Address
This field displays the MAC addresses of a wireless client that is currently
connected to the ZyXEL G-220 v2.
Refresh
Click Refresh to update this screen.
4.3 The Configuration Screen
Click Configuration in the ZyXEL Utility screen to display the screen as shown.
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Figure 30 Access Point Mode: Configuration
The following table describes the labels in this screen.
Table 16 Access Point Mode: Configuration
LABEL
DESCRIPTION
Wireless Settings
SSID
The SSID identifies the service set to which a wireless station is associated.
Wireless stations associating to the access point (the ZyXEL G-220 v2) must have
the same SSID.
Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the
wireless LAN.
Hide SSID
Select this check box to hide the SSID in the outgoing beacon frame so a station
cannot obtain the SSID through passive scanning using a site survey tool.
Channel
Set the operating frequency/channel depending on your geographical region.
Output Power
Set this field if you need to conserve power consumption (especially for notebook
computers). This control changes the strength of the ZyXEL G-220 v2’s antenna
gain or transmission power. Antenna gain, measured in dBm (decibel relative units
compared to milliwatts), is the increase in coverage. Higher antenna gain improves
the range of the signal for better communications.
Select High to set the ZyXEL G-220 v2’s antenna to transmit at 17-dBm.
Select Medium-High to set the ZyXEL G-220 v2’s antenna to transmit at 15-dBm.
Select Medium-Low to set the ZyXEL G-220 v2’s antenna to transmit at 13-dBm.
Select Low to set the ZyXEL G-220 v2’s antenna to transmit at 11-dBm. This
allows for the least power consumption.
Bridge
This field is only applicable in Windows XP.
Select the check box and an Ethernet adapter (network interface card (NIC)) on
your computer from the drop-down list box. This allows you to connect your
wireless network to the specified wired network.
Security Settings
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Table 16 Access Point Mode: Configuration (continued)
LABEL
DESCRIPTION
WEP
Select 64 Bits, 128 Bits or 256 Bits to activate WEP encryption and then fill in the
related fields.
Select Disable to deactivate the WEP encryption.
Authentication
Type
Select an authentication method. Choices are Auto, Shared Key and Open
System. Refer to Section 2.3 on page 31 for more information.
Pass Phrase
When you select the radio button, enter a passphrase of up to 63 case-sensitive
printable characters. As you enter the passphrase, the ZyXEL G-220 v2
automatically generates four different WEP key and displays it in the key field
below. Refer to Section 2.2.1 on page 27 for more information.
At the time of writing, you cannot use passphrase to generate 256-bit WEP keys.
Transmit Key
Select a default WEP key to use for data encryption. The key displays in the field
below.
Key x (where x is a Select this option if you want to manually enter the WEP keys.
number between 1 Enter the WEP key in the field provided.
and 4)
If you select 64 Bits in the WEP field.
Enter either 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for
example, 11AA22BB33) for HEX key type
or
Enter 5 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9”
(for example, MyKey) for ASCII key type.
If you select 128 Bits in the WEP field,
Enter either 26 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for
example, 00112233445566778899AABBCC) for HEX key type
or
Enter 13 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9”
(for example, MyKey12345678) for ASCII key type.
If you select 256 Bits in the WEP field,
Enter either 58 hexadecimal digits in the range of "A-F", "a-f" and "0-9" (for
example,
0000111122223333444455556666777788889999AAAABBBBCCCC000011)
for HEX key type
or
Enter 29 ASCII characters (case sensitive) ranging from "a-z", "A-Z" and "0-9"
(for example, MyKey111122223333444455556678) for ASCII key type.
Note: The values for the WEP keys must be set up exactly the
same on all wireless devices in the same wireless LAN.
ASCII WEP keys are case sensitive.
56
Save
Click Save to save the changes.
Cancel
Click Cancel to discard the changes.
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4.4 The MAC Filter Screen
The MAC Filter screen allows you to configure the ZyXEL G-220 v2 to give exclusive access
to (Accept) devices or exclude devices from (Reject) connecting to the ZyXEL G-220 v2.
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. You need to know the MAC address of the device(s) to configure this
screen.
Figure 31 Access Point Mode: MAC Filter
The following table describes the labels in this screen.
Table 17 Access Point Mode: MAC Filter
LABEL
DESCRIPTION
Filter Type
Define the filter action for the list of MAC addresses in the MAC address filter table.
Select Disable to deactivate the MAC filter feature.
Select Reject to block access to the ZyXEL G-220 v2, MAC addresses not listed
will be allowed to access the ZyXEL G-220 v2.
Select Accept to permit access to the ZyXEL G-220 v2, MAC addresses not listed
will be denied access to the ZyXEL G-220 v2.
Filter MAC
Address 1-16
Specify the MAC address(es) of the wireless station(s) that is allowed or denied
association to the ZyXEL G-220 v2.
Enter six pairs of hexadecimal digits (separated by colons) in the range of “A-F”,
“a-f” and “0-9” (for example, 00:A0:C5:00:00:02).
If you enter an invalid MAC address, once you click Save to save the values, a
warning screen will be displayed.
Save
Click Save to save the changes back to the ZyXEL G-220 v2.
Cancel
Click Cancel to discard the changes.
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CHAPTER 5
Maintenance
This chapter describes how to uninstall or upgrade the ZyXEL Utility.
5.1 The About Screen
The About screen displays related version numbers of the ZyXEL G-220 v2. To display the
screen as shown below, click the about (
) button.
Figure 32 About
The following table describes the read-only fields in this screen.
Table 18 About
LABEL
DESCRIPTION
Driver Version
This field displays the version number of the ZyXEL G-220 v2 driver.
Utility Version
This field displays the version number of the ZyXEL Utility.
5.2 Uninstalling the ZyXEL Utility
Follow the steps below to remove (or uninstall) the ZyXEL Utility from your computer.
1 Click Start, (All) Programs, ZyXEL G-220 v2 Wireless Adapter Utility, Uninstall
ZyXEL G-220 v2 Wireless Adapter Utility.
2 When prompted, click OK or Yes to remove the driver and the utility software.
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Figure 33 Uninstall: Confirm
3 Click Finish to complete uninstalling the software and restart the computer when
prompted.
Figure 34 Uninstall: Finish
5.3 Upgrading the ZyXEL Utility
Note: Before you uninstall the ZyXEL Utility, take note of the current network
configuration.
To perform the upgrade, follow the steps below.
1 Download the latest version of the utility from the ZyXEL web site and save the file on
your computer.
2 Follow the steps in Section 5.2 on page 59 to remove the current ZyXEL Utility from
your computer.
3 Restart your computer when prompted.
4 Disconnect the ZyXEL G-220 v2 from your computer.
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5 Double-click on the setup program for the new utility to start the ZyXEL Utility
installation.
6 Insert the ZyXEL G-220 v2 and check the version numbers in the About screen to make
sure the new utility is installed properly.
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CHAPTER 6
Troubleshooting
This chapter covers potential problems and the possible remedies. After each problem
description, some instructions are provided to help you to diagnose and to solve the problem.
6.1 Problems Starting the ZyXEL Utility Program
Table 19 Troubleshooting Starting ZyXEL Utility Program
PROBLEM
CORRECTIVE ACTION
Cannot start the
ZyXEL Wireless
LAN Utility
Make sure the ZyXEL G-220 v2 is properly inserted and the LED(s) is on. Refer to
the Quick Start Guide for the LED descriptions.
Use the Device Manager to check for possible hardware conflicts. Click Start,
Settings, Control Panel, System, Hardware and Device Manager. Verify the
status of the ZyXEL G-220 v2 under Network Adapter. (Steps may vary
depending on the version of Windows).
Install the ZyXEL G-220 v2 in another computer.
If the error persists, you may have a hardware problem. In this case, you should
contact your local vendor.
The ZyXEL Utility
icon does not
display.
If you install the Funk Odyssey Client software on the computer, uninstall (remove)
both the Funk Odyssey Client software and ZyXEL utility, and then install the
ZyXEL utility again after restarting the computer.
6.2 Problem Connecting to an Access Point
Table 20 Troubleshooting Access Point Connection Problem
PROBLEM
CORRECTIVE ACTION
When using the
Windows XP
configuration tool,
cannot scan for or
connect to any
access points.
The ZyXEL G-220 v2 might still be operating in access point mode. This results
when you set the ZyXEL G-220 v2 to operate in access point mode using the
ZyXEL Utility, close the ZyXEL Utility and then use the Windows XP configuration
tool.
Before you use the Windows XP configuration tool, make sure you set the ZyXEL
G-220 v2 to operate in station mode before you close and exit the ZyXEL Utility.
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6.3 Problem with the Link Status
Table 21 Troubleshooting Link Quality
PROBLEM
CORRECTIVE ACTION
The link quality
and/or signal
strength is poor all
the time.
Search and connect to another AP with a better link quality using the Site Survey
screen.
Move your computer closer to the AP or the peer computer(s) within the
transmission range.
There may be too much radio interference (for example microwave or another AP
using the same channel) around your wireless network. Relocate or reduce the
radio interference.
6.4 Problems Communicating With Other Computers
Table 22 Troubleshooting Communication Problem
64
PROBLEM
CORRECTIVE ACTION
In wireless station
mode, the
computer with the
ZyXEL G-220 v2
installed cannot
communicate with
the other
computer(s).
In Infrastructure Mode
• Make sure that the AP and the associated computers are turned on and
working properly.
• Make sure the ZyXEL G-220 v2 computer and the associated AP use the same
SSID.
• Change the AP and the associated wireless clients to use another radio
channel if interference is high.
• Make sure that the computer and the AP share the same security option and
key. Verify the settings in the Profile Security Setting screen.
In Ad-Hoc (IBSS) Mode
• Verify that the peer computer(s) is turned on.
• Make sure the ZyXEL G-220 v2 computer and the peer computer(s) are using
the same SSID and channel.
• Make sure that the computer and the peer computer(s) share the same
security settings.
• Change the wireless clients to use another radio channel if interference is high.
In access point
mode, the wireless
station(s) cannot
associate to the
ZyXEL G-220 v2.
Verify that the computer with the ZyXEL G-220 v2 installed is turned on.
Make sure the wireless station(s) uses the same SSID as the ZyXEL G-220 v2.
Make sure the wireless station(s) uses the same security settings.
Verify that the wireless station(s) is not blocked in the MAC Filter screen.
Chapter 6 Troubleshooting
ZyXEL G-220 v2 User’s Guide
APPENDIX A
Product Specifications
Table 23 Product Specifications
PHYSICAL AND ENVIRONMENTAL
Product Name
ZyXEL G-220 v2 802.11g Wireless USB Adapter
Interface
USB 2.0 compatible
Standards
IEEE 802.11b
IEEE 802.11g
Network Architectures
Infrastructure
Ad-Hoc
Operating Frequencies
2.412-2.484GHz
Operating Channels
IEEE 802.11b: 13 Channels (Europe)
IEEE 802.11g: 13 Channels (Europe)
IEEE 802.11b: 11 Channels (North America)
IEEE 802.11g: 11 Channels (North America)
IEEE 802.11b: 11 Channels (Taiwan)
IEEE 802.11g: 11 Channels (Taiwan)
Data Rate
IEEE 802.11b: 11, 5.5, 2, 1Mbps
IEEE 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps
Modulation
IEEE 802.11g: Orthogonal Frequency Division Multiplexing (64QAM,
16QAM, QPSK and BPSK)
IEEE 802311b: PBCC, Direct Sequence Spread Spectrum (CCK,
DQPSK, DBPSK).
Security
64/128/256-bit WEP
WPA/WPA-PSK/WPA2/WPA2-PSK
IEEE 802.1x
Operating Temperature
0 ~ 50 degrees Centigrade
Storage Temperature
-30 ~ 60 degrees Centigrade
Operating Humidity
20 ~ 95% (non-condensing)
Storage Humidity
20 ~ 95% (non-condensing)
Power
IEEE 802.11g: TX: 450mA RX: 345mA
IEEE 802.11b: TX: 450mA RX: 345mA
Voltage
5V
Weight
25.8 g
Dimension
(W) 95 mm × (D) 30 mm × (H) 16 mm
RADIO SPECIFICATIONS
Media Access Protocol
IEEE 802.11
Frequency
2400-2483.5MHz (Industrial Scientific Medical Band)
Appendix A Product Specifications
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ZyXEL G-220 v2 User’s Guide
Table 23 Product Specifications (continued)
Channels
1~11 Channels (USA, Canada)
1~13 Channels (Europe)
Data Rate
IEEE 802.11g (OFDM): 6, 9, 12, 18, 24, 36, 48, 54 Mbps
IEEE 802.11b: 1, 2, 5.5, 11 Mbps
Modulation
IEEE 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (OFDM)
IEEE 802.11b: 11, 5.5 Mbps (CCK), 2 Mbps (DQPSK), 1 Mbps
(DBPSK)
Maximum Output Power
19 dBm at 11Mbps CCK, QPSK, BPSK
22 dBm at 54Mbps OFDM
RX Sensitivity
IEEE 802.11g (OFDM): 54 Mbps: < -72 dBm
IEEE 802.11b (CCK): 11 Mbps: < -85 dBm
SOFTWARE SPECIFICATIONS
66
Device Drivers
Microsoft Windows 98 Second Edition, Windows ME, Windows 2000,
Windows XP
Roaming
IEEE 802.11b/g compliant
WEP
Supports 64-bit, 128-bit and 256-bit WEP encryption
Appendix A Product Specifications
ZyXEL G-220 v2 User’s Guide
APPENDIX B
Access Point Mode Setup Example
This example uses the network sharing feature in Windows 2000 to bridge the wired and
wireless network when you set the ZyXEL G-220 v2 in access point (AP) mode.
Refer to Chapter 4, “Access Point Mode Configuration,” on page 53 for setup methods and
requirements.
Steps may vary depending on your Windows version. You may need to install additional
software in Windows 98 Second Edition and Windows ME.
Configuring the Computer on Which You Install the ZyXEL G220 v2
1 Refer to Section 1.7.1 “Change ZyXEL G-220 v2 Mode” on page 25 to set the ZyXEL G220 v2 to operate in AP mode.
2 Click Start, Settings, Network and Dial-up Connections (or click Start, Settings,
Control Panel and double-click Network and Dial-up Connections).
Figure 35 Windows 2000: Start
3 Right-click on the icon for your wired Ethernet adapter and click Properties.
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Figure 36 Windows 2000: Network and Dial-up Connections
4 A Properties screen displays. Click the Sharing tab and select Enable Internet
Connection Sharing for this connection. Click OK.
Figure 37 Windows 2000: Network Properties
If there is more than one network adapter on the computer, select Enable Internet
Connection Sharing for this connection and select the network adapter to which you
want to share network access.
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Figure 38 WIndows 2000: Network Properties: Select Network Adapter
5 A notice screen displays. Click Yes.
Figure 39 Windows 2000: Local Network
Configuring the Wireless Station Computer
Refer to Appendix F, “Setting up Your Computer’s IP Address,” on page 95 for more
information on how to set up the wireless station computer(s) IP address.
Appendix B Access Point Mode Setup Example
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70
Appendix B Access Point Mode Setup Example
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APPENDIX C
Disable Windows XP Wireless LAN
Configuration Tool
Windows XP includes a configuration tool (also known as Wireless Zero Configuration
(WZC)) for wireless devices.
Follow the steps below to disable the configuration tool in Windows XP after you install the
ZyXEL Utility. The screen varies depending on the version of Windows XP service pack.
Via the Wireless Network System Tray Icon
If the network icon for wireless connections is not present in the system tray, see the next
section.
1 Double-click the network icon for wireless connections in the system tray.
Figure 40 Windows XP: System Tray Icon
2 Windows XP SP1: When a Wireless Network Connection window displays, click
Advanced….
Appendix C Disable Windows XP Wireless LAN Configuration Tool
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Figure 41 Windows XP SP1: Wireless Network Connection
Windows XP SP2: When a Wireless Network Connection window displays, click
Change advanced settings under Related Tasks and then the Wireless Networks tab.
Figure 42 Windows XP SP2: Wireless Network Connection
3 In the Wireless Network Connection Properties window, make sure the Use Windows
to configure my wireless network settings check box is not selected. Click OK.
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Figure 43 Windows XP SP1: Wireless Network Connection Properties
Figure 44 Windows XP SP2: Wireless Network Connection Properties
Appendix C Disable Windows XP Wireless LAN Configuration Tool
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Via the Control Panel
1 If the icon for the wireless network connection is not in the system tray, click Start,
Control Panel and double-click Network Connections.
2 Double-click on the icon for wireless network connection to display a status window as
shown below.
3 Click Properties and click the Wireless Networks tab.
Figure 45 Windows XP SP1: Wireless Network Connection Status
Figure 46 Windows XP SP2: Wireless Network Connection Status
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4 In the Wireless Network Connection Properties window, make sure the Use Windows
to configure my wireless network settings check box is not selected. Click OK.
Figure 47 Windows XP SP1: Wireless Network Connection Properties
Figure 48 Windows XP SP2: Wireless Network Connection Properties
Appendix C Disable Windows XP Wireless LAN Configuration Tool
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76
Appendix C Disable Windows XP Wireless LAN Configuration Tool
ZyXEL G-220 v2 User’s Guide
APPENDIX D
Management with Wireless Zero
Configuration
This appendix shows you how to manage your ZyXEL G-220 v2 using the Windows XP
wireless zero configuration tool.
Be sure you have the Windows XP service pack 2 installed on your computer. Otherwise, you
should at least have the Windows XP service pack 1 already on your computer and download
the support patch for WPA from the Microsoft web site.
Windows XP SP2 screen shots are shown unless otherwise specified. Click the help icon (
in most screens, move the cursor to the item that you want the information about and click to
view the help.
Activating Wireless Zero Configuration
Make sure the Use Windows to configure my wireless network settings check box is
selected in the Wireless Network Connection Properties screen. Refer to Appendix C on
page 71.
If you see the following screen, refer to article 871122 on the Microsoft web site for
information on starting WZC.
Figure 49 Windows XP SP2: WZC Not Available
Appendix D Management with Wireless Zero Configuration
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Connecting to a Wireless Network
1 Double-click the network icon for wireless connections in the system tray to open the
Wireless Network Connection Status screen.
Figure 50 Windows XP SP2: System Tray Icon
The type of the wireless network icon in Windows XP SP2 indicates the status of the ZyXEL
G-220 v2. Refer to the following table for details.
Table 24 Windows XP SP2: System Tray Icon
ICON
DESCRIPTION
The ZyXEL G-220 v2 is connected to a wireless network.
The ZyXEL G-220 v2 is in the process of connecting to a wireless network.
The connection to a wireless network is limited because the network did not assign a
network address to the computer.
The ZyXEL G-220 v2 is not connected to a wireless network.
2 Windows XP SP2: In the Wireless Network Connection Status screen, click View
Wireless Networks to open the Wireless Network Connection screen.
Figure 51 Windows XP SP2: Wireless Network Connection Status
78
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Windows XP SP1: In the Wireless Network Connection Status screen, click Properties
and the Wireless Networks tab to open the Wireless Network Connection Properties
screen.
Figure 52 Windows XP SP1: Wireless Network Connection Status
3 Windows XP SP2: Click Refresh network list to reload and search for available wireless
devices within transmission range. Select a wireless network in the list and click Connect
to join the selected wireless network.
Figure 53 Windows XP SP2: Wireless Network Connection
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The following table describes the icons in the wireless network list.
Table 25 Windows XP SP2: Wireless Network Connection
ICON
DESCRIPTION
This denotes that wireless security is activated for the wireless network.
This denotes that this wireless network is your preferred network. Ordering your preferred
networks is important because the ZyXEL G-220 v2 tries to associate to the preferred
network first in the order that you specify. Refer to the section on ordering the preferred
networks for detailed information.
This denotes the signal strength of the wireless network.
Move your cursor to the icon to see details on the signal strength.
Windows XP SP1: Click Refresh to reload and search for available wireless devices
within transmission range. Select a wireless network in the Available networks list, click
Configure and set the related fields to the same security settings as the associated AP to
add the selected network into the Preferred networks table. Click OK to join the selected
wireless network. Refer to the section on security settings (discussed later) for more
information.
Figure 54 Windows XP SP1: Wireless Network Connection Properties
4 4.Windows XP SP2: If the wireless security is activated for the selected wireless network,
the Wireless Network Connection screen displays. You must set the related fields in the
Wireless Network Connection screen to the same security settings as the associated AP
and click Connect. Refer to the section about security settings for more information.
Otherwise click Cancel and connect to another wireless network without data encryption.
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If there is no security activated for the selected wireless network, a warning screen
appears. Click Connect Anyway if wireless security is not your concern.
Figure 55 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSK
Figure 56
Windows XP SP2: Wireless Network Connection: No Security
5 Verify that you have successfully connected to the selected network and check the
connection status in the wireless network list or the connection icon in the Preferred
networks or Available networks list.
The following table describes the connection icons.
Table 26 Windows XP: Wireless Networks
ICON
DESCRIPTION
This denotes the wireless network is an available wireless network.
This denotes the ZyXEL G-220 v2 is associated to the wireless network.
This denotes the wireless network is not available.
Security Settings
When you configure the ZyXEL G-220 v2 to connect to a secure network but the security
settings are not yet enabled on the ZyXEL G-220 v2, you will see different screens according
to the authentication and encryption methods used by the selected network.
Appendix D Management with Wireless Zero Configuration
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Association
Select a network in the Preferred networks list and click Properties to view or configure
security.
Figure 57 Windows XP: Wireless (network) properties: Association
The following table describes the labels in this screen.
Table 27 Windows XP: Wireless (network) properties: Association
82
LABEL
DESCRIPTION
Network name
(SSID)
This field displays the SSID (Service Set IDentifier) of each wireless network.
Network
Authentication
This field automatically shows the authentication method (Share, Open, WPA or
WPA-PSK) used by the selected network.
Data Encryption
This field automatically shows the encryption type (TKIP, WEP or Disable) used
by the selected network.
Network Key
Enter the pre-shared key or WEP key.
The values for the keys must be set up exactly the same on all wireless devices in
the same wireless LAN.
Confirm network
key
Enter the key again for confirmation.
Key index
(advanced)
Select a default WEP key to use for data encryption.
This field is available only when the network use WEP encryption method and the
The key is provided for me automatically check box is not selected.
The key is
provided for me
automatically
If this check box is selected, the wireless AP assigns the ZyXEL G-220 v2 a key.
Appendix D Management with Wireless Zero Configuration
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Table 27 Windows XP: Wireless (network) properties: Association (continued)
LABEL
DESCRIPTION
If this check box is selected, you are connecting to another computer directly.
This is a
computer-tocomputer (ad hoc)
network; wireless
access points are
not used
OK
Click OK to save your changes.
Cancel
Click Cancel to leave this screen without saving any changes you may have made.
Authentication
Click the Authentication tab in the Wireless (network) properties screen to display the
screen shown next. The fields on this screen are grayed out when the network is in Ad-Hoc
mode or data encryption is disabled.
Figure 58 Windows XP: Wireless (network) properties: Authentication
The following table describes the labels in this screen.
Table 28 Windows XP: Wireless (network) properties: Authentication
LABEL
DESCRIPTION
Enable IEEE
802.1x
authentication for
this network
This field displays whether the IEEE 802.1x authentication is active.
If the network authentication is set to Open in the previous screen, you can choose
to disable or enable this feature.
EAP Type
Select the type of EAP authentication. Options are Protected EAP (PEAP) and
Smart Card or other Certificate.
Properties
Click this button to open the properties screen and configure certificates. The
screen varies depending on what you select in the EAP type field.
Appendix D Management with Wireless Zero Configuration
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Table 28 Windows XP: Wireless (network) properties: Authentication (continued)
LABEL
DESCRIPTION
Authenticate as
computer when
computer
information is
available
Select this check box to have the computer send its information to the network for
authentication when a user is not logged on.
Authenticate as
guest when user
or computer
information is
unavailable
Select this check box to have the computer access to the network as a guest when
a user is not logged on or computer information is not available.
OK
Click OK to save your changes.
Cancel
Click Cancel to leave this screen without saving any changes you may have made.
Authentication Properties
Select an EAP authentication type in the Wireless (network) properties: Authentication
screen and click the Properties button to display the following screen.
Protected EAP Properties
Figure 59 Windows XP: Protected EAP Properties
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The following table describes the labels in this screen.
Table 29 Windows XP: Protected EAP Properties
LABEL
DESCRIPTION
Validate server
certificate
Select the check box to verify the certificate of the authentication server.
Connect to these
servers
Select the check box and specify a domain in the field below to have your
computer connect to a server which resides only within this domain.
Trusted Root
Certification
Authorities:
Select a trusted certification authority from the list below.
Do not prompt
user to authorize
new server or
trusted
certification
authorities.
Select this check box to verify a new authentication server or trusted CA without
prompting.
This field is available only if you installed the Windows XP server pack 2.
Select
Authentication
Method:
Select an authentication method from the drop-down list box and click Configure
to do settings.
Enable Fast
Reconnect
Select the check box to automatically reconnect to the network (without reauthentication) if the wireless connection goes down.
OK
Click OK to save your changes.
Cancel
Click Cancel to leave this screen without saving any changes you may have made.
Note: You must first have a wired connection to a network and
obtain the certificate(s) from a certificate authority (CA).
Consult your network administrator for more information.
Smart Card or other Certificate Properties
Figure 60 Windows XP: Smart Card or other Certificate Properties
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The following table describes the labels in this screen.
Table 30 Windows XP: Smart Card or other Certificate Properties
LABEL
DESCRIPTION
Use my smart card Select this check box to use the smart card for authentication.
Use a certificate
on this computer
Select this check box to use a certificate on your computer for authentication.
Validate server
certificate
Select the check box to check the certificate of the authentication server.
Connect to these
servers
Select the check box and specify a domain in the field below to have your
computer connect to a server which resides only within this domain.
Trusted Root
Certification
Authorities:
Select a trusted certification authority from the list below.
View Certificate
Click this button if you want to verify the selected certificate.
Use a different
user name for the
connection:
Select the check box to use a different user name when the user name in the smart
card or certificate is not the same as the user name in the domain that you are
logged on to.
OK
Click OK to save your changes.
Cancel
Click Cancel to leave this screen without saving any changes you may have made.
Note: You must first have a wired connection to a network and
obtain the certificate(s) from a certificate authority (CA).
Consult your network administrator for more information.
Ordering the Preferred Networks
Follow the steps below to manage your preferred networks.
1 Windows XP SP2: Click Change the order of preferred networks in the Wireless
Network Connection screen (see Figure 53 on page 79). The screen displays as shown.
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Figure 61 Windows XP SP2: Wireless Networks: Preferred Networks
Windows XP SP1: In the Wireless Network Connection Status screen, click Properties
and the Wireless Networks tab to open the screen as shown.
Figure 62 Windows XP SP1: Wireless Networks: Preferred Networks
2 Whenever the ZyXEL G-220 v2 tries to connect to a new network, the new network is
added in the Preferred networks table automatically. Select a network and click Move
up or Move down to change it's order, click Remove to delete it or click Properties to
view the security, authentication or connection information of the selected network. Click
Add to add a preferred network into the list manually.
Appendix D Management with Wireless Zero Configuration
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APPENDIX E
Types of EAP Authentication
This appendix discusses some popular authentication types: EAP-MD5, EAP-TLS, EAPTTLS, PEAP and LEAP.
The type of authentication you use depends on the RADIUS server or the AP. Consult your
network administrator for more information. Your wireless LAN device may not support all
authentication types.
EAP-MD5 (Message-Digest Algorithm 5)
MD5 authentication is the simplest one-way authentication method. The authentication server
sends a challenge to the wireless station. The wireless station ‘proves’ that it knows the
password by encrypting the password with the challenge and sends back the information.
Password is not sent in plain text.
However, MD5 authentication has some weaknesses. Since the authentication server needs to
get the plaintext passwords, the passwords must be stored. Thus someone other than the
authentication server may access the password file. In addition, it is possible to impersonate an
authentication server as MD5 authentication method does not perform mutual authentication.
Finally, MD5 authentication method does not support data encryption with dynamic session
key. You must configure WEP encryption keys for data encryption.
EAP-TLS (Transport Layer Security)
With EAP-TLS, digital certifications are needed by both the server and the wireless stations
for mutual authentication. The server presents a certificate to the client. After validating the
identity of the server, the client sends a different certificate to the server. The exchange of
certificates is done in the open before a secured tunnel is created. This makes user identity
vulnerable to passive attacks. A digital certificate is an electronic ID card that authenticates the
sender’s identity. However, to implement EAP-TLS, you need a Certificate Authority (CA) to
handle certificates, which imposes a management overhead.
EAP-TTLS (Tunneled Transport Layer Service)
EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for only the
server-side authentications to establish a secure connection. Client authentication is then done
by sending username and password through the secure connection, thus client identity is
protected. For client authentication, EAP-TTLS supports EAP methods and legacy
authentication methods such as PAP, CHAP, MS-CHAP and MS-CHAP v2.
Appendix E Types of EAP Authentication
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PEAP (Protected EAP)
Like EAP-TTLS, server-side certificate authentication is used to establish a secure connection,
then use simple username and password methods through the secured connection to
authenticate the clients, thus hiding client identity. However, PEAP only supports EAP
methods, such as EAP-MD5, EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card),
for client authentication. EAP-GTC is implemented only by Cisco.
LEAP
LEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE
802.1x.
Dynamic WEP Key Exchange
The AP maps a unique key that is generated with the RADIUS server. This key expires when
the wireless connection times out, disconnects or reauthentication times out. A new WEP key
is generated each time reauthentication is performed.
If this feature is enabled, it is not necessary to configure a default encryption key in the
Wireless screen. You may still configure and store keys here, but they will not be used while
Dynamic WEP is enabled.
Note: EAP-MD5 cannot be used with Dynamic WEP Key Exchange
For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and PEAP) use
dynamic keys for data encryption. They are often deployed in corporate environments, but for
public deployment, a simple user name and password pair is more practical. The following
table is a comparison of the features of authentication types.
Table 31 Comparison of EAP Authentication Types
90
EAP-MD5
EAP-TLS
EAP-TTLS
PEAP
LEAP
Mutual Authentication
No
Yes
Yes
Yes
Yes
Certificate – Client
No
Yes
Optional
Optional
No
Certificate – Server
No
Yes
Yes
Yes
No
Dynamic Key Exchange
No
Yes
Yes
Yes
Yes
Credential Integrity
None
Strong
Strong
Strong
Moderate
Deployment Difficulty
Easy
Hard
Moderate
Moderate
Moderate
Client Identity Protection
No
No
Yes
Yes
No
Appendix E Types of EAP Authentication
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WPA(2)
Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2 (IEEE
802.11i) is a wireless security standard that defines stronger encryption, authentication and
key management than WPA.
Key differences between WPA(2) and WEP are improved data encryption and user
authentication.
If both an AP and the wireless clients support WPA2 and you have an external RADIUS
server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server,
you should use WPA2-PSK (WPA2-Pre-Shared Key) that only requires a single (identical)
password entered into each access point, wireless gateway and wireless client. As long as the
passwords match, a wireless client will be granted access to a WLAN.
If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending
on whether you have an external RADIUS server or not.
Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is
less secure than WPA or WPA2.
Encryption
Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol
(TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA and WPA2 use Advanced
Encryption Standard (AES) in the Counter mode with Cipher block chaining Message
authentication code Protocol (CCMP) to offer stronger encryption than TKIP.
TKIP uses 128-bit keys that are dynamically generated and distributed by the authentication
server. AES (Advanced Encryption Standard) is a block cipher that uses a 256-bit
mathematical algorithm called Rijndael. They both include a per-packet key mixing function,
a Message Integrity Check (MIC) named Michael, an extended initialization vector (IV) with
sequencing rules, and a re-keying mechanism.
WPA and WPA2 regularly change and rotate the encryption keys so that the same encryption
key is never used twice.
The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up
a key hierarchy and management system, using the PMK to dynamically generate unique data
encryption keys to encrypt every data packet that is wirelessly communicated between the AP
and the wireless stations. This all happens in the background automatically.
The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data
packets, altering them and resending them. The MIC provides a strong mathematical function
in which the receiver and the transmitter each compute and then compare the MIC. If they do
not match, it is assumed that the data has been tampered with and the packet is dropped.
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By generating unique data encryption keys for every data packet and by creating an integrity
checking mechanism (MIC), with TKIP and AES it is more difficult to decrypt data on a Wi-Fi
network than WEP and difficult for an intruder to break into the network.
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. The common-password approach makes WPA(2)-PSK susceptible to
brute-force password-guessing attacks but it’s still an improvement over WEP as it employs a
consistent, single, alphanumeric password to derive a PMK which is used to generate unique
temporal encryption keys. This prevent all wireless devices sharing the same encryption keys.
(a weakness of WEP)
User Authentication
WPA and WPA2 apply IEEE 802.1x and Extensible Authentication Protocol (EAP) to
authenticate wireless stations using an external RADIUS database. WPA2 reduces the number
of key exchange messages from six to four (CCMP 4-way handshake) and shortens the time
required to connect to a network. Other WPA2 authentication features that are different from
WPA include key caching and pre-authentication. These two features are optional and may not
be supported in all wireless devices.
Key caching allows a wireless client to store the PMK it derived through a sucessful
authentication with an AP. The wireless client uses the PMK when it tries to connect to the
same AP and does not need to go with the authentication process again.
Pre-authentication enables fast roaming by allowing the wireless client (already connecting to
an AP) to perform IEEE 802.1x authentication with another AP before connecting to it.
WPA(2)-PSK Application Example
A WPA(2)s-PSK application looks as follows.
1 First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key
(PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters
(including spaces and symbols).
2 The AP checks each client's password and (only) allows it to join the network if it
matches its password.
3 The AP and wireless clients use the pre-shared key to generate a common PMK.
4 The AP and wireless clients use the TKIP or AES encryption process to encrypt data
exchanged between them.
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Figure 63 WPA-PSK Authentication
WPA(2) with RADIUS Application Example
You need the IP address of the RADIUS server, its port number (default is 1812), and the
RADIUS shared secret. A WPA(2) application example with an external RADIUS server
looks as follows. "A" is the RADIUS server. "DS" is the distribution system.
1 The AP passes the wireless client's authentication request to the RADIUS server.
2 The RADIUS server then checks the user's identification against its database and grants
or denies network access accordingly.
3 The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then
sets up a key hierarchy and management system, using the pair-wise key to dynamically
generate unique data encryption keys to encrypt every data packet that is wirelessly
communicated between the AP and the wireless clients.
Figure 64 WPA(2) with RADIUS Application Example
Appendix E Types of EAP Authentication
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Security Parameters Summary
Refer to this table to see what other security parameters you should configure for each
Authentication Method/ key management protocol type. MAC address filters are not
dependent on how you configure these security features.
Table 32 Wireless Security Relational Matrix
AUTHENTICATION
ENCRYPTION ENTER
METHOD/ KEY
METHOD
MANUAL KEY
MANAGEMENT PROTOCOL
IEEE 802.1X
Open
Disable
None
No
Enable without Dynamic WEP Key
Open
Shared
94
WEP
WEP
No
Enable with Dynamic WEP Key
Yes
Enable without Dynamic WEP Key
Yes
Disable
No
Enable with Dynamic WEP Key
Yes
Enable without Dynamic WEP Key
Yes
Disable
WPA
TKIP/AES
No
Enable
WPA-PSK
TKIP/AES
Yes
Disable
WPA2
TKIP/AES
No
Enable
WPA2-PSK
TKIP/AES
Yes
Disable
Appendix E Types of EAP Authentication
ZyXEL G-220 v2 User’s Guide
APPENDIX F
Setting up Your Computer’s IP Address
All computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed.
Windows 95/98/Me/NT/2000/XP, Macintosh OS 7 and later operating systems and all
versions of UNIX/LINUX include the software components you need to install and use TCP/
IP on your computer. Windows 3.1 requires the purchase of a third-party TCP/IP application
package.
TCP/IP should already be installed on computers using Windows NT/2000/XP, Macintosh OS
7 and later operating systems.
After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order
to "communicate" with your network.
Windows 95/98/Me
Click Start, Settings, Control Panel and double-click the Network icon to open the Network
window
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Figure 65 WIndows 95/98/Me: Network: Configuration
Installing Components
The Network window Configuration tab displays a list of installed components. You need a
network adapter, the TCP/IP protocol and Client for Microsoft Networks.
If you need the adapter:
1 In the Network window, click Add.
2 Select Adapter and then click Add.
3 Select the manufacturer and model of your network adapter and then click OK.
If you need TCP/IP:
1 In the Network window, click Add.
2 Select Protocol and then click Add.
3 Select Microsoft from the list of manufacturers.
4 Select TCP/IP from the list of network protocols and then click OK.
If you need Client for Microsoft Networks:
1 Click Add.
2 Select Client and then click Add.
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3 Select Microsoft from the list of manufacturers.
4 Select Client for Microsoft Networks from the list of network clients and then click
OK.
5 Restart your computer so the changes you made take effect.
Configuring
1 In the Network window Configuration tab, select your network adapter's TCP/IP entry
and click Properties
2 Click the IP Address tab.
•
•
If your IP address is dynamic, select Obtain an IP address
automatically.
If you have a static IP address, select Specify an IP address and type
your information into the IP Address and Subnet Mask fields.
Figure 66 Windows 95/98/Me: TCP/IP Properties: IP Address
3 Click the DNS Configuration tab.
•
•
If you do not know your DNS information, select Disable DNS.
If you know your DNS information, select Enable DNS and type the
information in the fields below (you may not need to fill them all in).
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Figure 67 Windows 95/98/Me: TCP/IP Properties: DNS Configuration
4 Click the Gateway tab.
•
•
If you do not know your gateway’s IP address, remove previously
installed gateways.
If you have a gateway IP address, type it in the New gateway field
and click Add.
5 Click OK to save and close the TCP/IP Properties window.
6 Click OK to close the Network window. Insert the Windows CD if prompted.
7 Restart your computer when prompted.
Verifying Settings
1 Click Start and then Run.
2 In the Run window, type "winipcfg" and then click OK to open the IP Configuration
window.
3 Select your network adapter. You should see your computer's IP address, subnet mask
and default gateway.
Windows 2000/NT/XP
1 For Windows XP, click start, Control Panel. In Windows 2000/NT, click Start,
Settings, Control Panel.
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Figure 68 Windows XP: Start Menu
2 For Windows XP, click Network Connections. For Windows 2000/NT, click Network
and Dial-up Connections.
Figure 69 Windows XP: Control Panel
3 Right-click Local Area Connection and then click Properties.
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Figure 70 Windows XP: Control Panel: Network Connections: Properties
4 Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and click
Properties.
Figure 71 Windows XP: Local Area Connection Properties
5 The Internet Protocol TCP/IP Properties window opens (the General tab in Windows
XP).
•
100
If you have a dynamic IP address click Obtain an IP address
automatically.
Appendix F Setting up Your Computer’s IP Address
ZyXEL G-220 v2 User’s Guide
•
If you have a static IP address click Use the following IP Address
and fill in the IP address, Subnet mask, and Default gateway fields.
Click Advanced.
Figure 72 Windows XP: Advanced TCP/IP Settings
6 If you do not know your gateway's IP address, remove any previously installed gateways
in the IP Settings tab and click OK.
Do one or more of the following if you want to configure additional IP addresses:
•
•
•
•
•
•
•
•
In the IP Settings tab, in IP addresses, click Add.
In TCP/IP Address, type an IP address in IP address and a subnet
mask in Subnet mask, and then click Add.
Repeat the above two steps for each IP address you want to add.
Configure additional default gateways in the IP Settings tab by
clicking Add in Default gateways.
In TCP/IP Gateway Address, type the IP address of the default
gateway in Gateway. To manually configure a default metric (the
number of transmission hops), clear the Automatic metric check box
and type a metric in Metric.
Click Add.
Repeat the previous three steps for each default gateway you want to
add.
Click OK when finished.
7 In the Internet Protocol TCP/IP Properties window (the General tab in Windows XP):
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ZyXEL G-220 v2 User’s Guide
•
•
Click Obtain DNS server address automatically if you do not know
your DNS server IP address(es).
If you know your DNS server IP address(es), click Use the following
DNS server addresses, and type them in the Preferred DNS server
and Alternate DNS server fields.
If you have previously configured DNS servers, click Advanced and
then the DNS tab to order them.
Figure 73 Windows XP: Internet Protocol (TCP/IP) Properties
8 Click OK to close the Internet Protocol (TCP/IP) Properties window.
9 Click OK to close the Local Area Connection Properties window.
10Restart your computer (if prompted).
Verifying Settings
1 Click Start, All Programs, Accessories and then Command Prompt.
2 In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can
also open Network Connections, right-click a network connection, click Status and then
click the Support tab.
Macintosh OS 8/9
1 Click the Apple menu, Control Panel and double-click TCP/IP to open the TCP/IP
Control Panel.
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Figure 74 Macintosh OS 8/9: Apple Menu
2 Select Ethernet built-in from the Connect via list.
Figure 75 Macintosh OS 8/9: TCP/IP
3 For dynamically assigned settings, select Using DHCP Server from the Configure: list.
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4 For statically assigned settings, do the following:
•
•
•
•
From the Configure box, select Manually.
Type your IP address in the IP Address box.
Type your subnet mask in the Subnet mask box.
Type the IP address of your gateway in the Router address box if
you have one.
5 Close the TCP/IP Control Panel.
6 Click Save if prompted, to save changes to your configuration.
7 Restart your computer (if prompted).
Verifying Settings
Check your TCP/IP properties in the TCP/IP Control Panel window.
Macintosh OS X
1 Click the Apple menu, and click System Preferences to open the System Preferences
window.
Figure 76 Macintosh OS X: Apple Menu
2 Click Network in the icon bar.
•
•
•
Select Automatic from the Location list.
Select Built-in Ethernet from the Show list.
Click the TCP/IP tab.
3 For dynamically assigned settings, select Using DHCP from the Configure list.
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Figure 77 Macintosh OS X: Network
4 For statically assigned settings, do the following:
•
•
•
•
From the Configure box, select Manually.
Type your IP address in the IP Address box.
Type your subnet mask in the Subnet mask box.
Type the IP address of your gateway in the Router address box if
you have one.
5 Click Apply Now and close the window.
6 Restart your computer (if prompted).
Verifying Settings
Check your TCP/IP properties in the Network window.
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Appendix F Setting up Your Computer’s IP Address
ZyXEL G-220 v2 User’s Guide
Index
About 59
about your ZyXEL G-220 v2 19
access point (AP) 19
Access point mode 21, 25
access point mode 21, 36, 53
additional setup requirements 53
configuration 53
activating a profile 49
Adapter 50
Ad-Hoc 20, 47
Advanced Encryption Standard 29, 91
advanced settings 50
antenna 19
antenna gain 55
antenna output power 54
antenna power output 65
authentication 56
authentication method
auto 31
open system 31
shared key 31
auto authentication 31
data encryption 38
dBm 55
Denmark, Contact Information 7
driver version 59
Dynamic WEP Key Exchange 90
EAP Authentication 28
Enabling OTIST 32
Encryption 29, 91
Encryption Type 31
encryption type 39
FCC 4
Finland, Contact Information 7
France, Contact Information 7
CA 89
Certificate Authority 89
channel 27, 36, 38, 47, 65
Configuration 55
configuration method 21
important note 21
Odyssey Client Manager 21
Wireless Zero Configuration (WZC) 21
ZyXEL Utility 21
connecting to a WLAN 38
Copyright 3
creating a new profile 46
current configuration 35
current connection status 35
current status 54
Customer Support 7
Index
Germany, Contact Information 7
getting started 19
graphics icons key 18
hardware connections 21
Hide SSID 55
107
ZyXEL G-220 v2 User’s Guide
IEEE 802.1x 28, 42
Infrastructure 19
initialization vector (IV) 91
installation
utility 19
password phrase 28
Power Saving Mode 51
preamble 50
product specifications 65
profile 36, 45
activation 49
add new 45, 46
delete 45
edit 45
information 45
link information 35, 54
Quick Start Guide 17, 21
MAC (Media Access Control) 57
MAC Filter 57
MAC Filter action 57
Message Integrity Check 29
Message Integrity Check (MIC) 91
MIC 29
radio interference 64
real-time data traffic statistics 36
Regular Mail 7
Related Documentation 17
network type 36
North America Contact Information 7
Norway, Contact Information 7
save power 51, 55
Scan Info 47
security 28, 54, 65
data encryption 28
Security Parameters 94
security setting 55
Service 6
Setup Key 32
shared key authentication 31
signal strength 38
site survey 37
connecting to a WLAN network 38
scan 38
security settings 39
sleep mode 51
SoftAP 19
Spain, Contact Information 8
SSID 36, 38, 54, 55
SSID (Service Set Identity) 27
Starting OTIST 33
statistics 36
support CD 17
Odyssey Client Manager 21
One-Touch Intelligent Security Technology 32
open system authentication 31
OTIST Introduction 32
output power 55
PA2-PSK 40
Pairwise Master Key (PMK) 91
passphrase 28, 39
108
Index
ZyXEL G-220 v2 User’s Guide
Support E-mail 7
Sweden, Contact Information 8
syntax conventions 17
Telephone 7
Temporal Key Integrity Protocol 29
Temporal Key Integrity Protocol (TKIP) 91
TKIP 29
transmission rate 36, 46, 50, 54, 65
transmission rate (Tx Rate) 27
transmit key 39
Trend Chart 36
troubleshooting 63
AP connection 63
link status 64
network communication 64
starting ZyXEL Utility 63
uninstalling ZyXEL Utility 59
upgrading ZyXEL Utility 60
important step 60
User Authentication 29, 92
introduction 27
security 27
SSID 27
transmission rate 27
Wireless LAN (WLAN) 27
wireless standard 36, 65
wireless station mode 24, 36
configuration 35
WLAN
Security parameters 94
Worldwide Contact Information 7
WPA 29, 41, 91
WPA2 29, 41, 91
WPA2-Pre-Shared Key 29, 91
WPA2-PSK 29, 91
WPA-PSK 29, 40, 91
WZC (Wireless Zero Configuration) 21
ZyXEL G-220 v2 Modes 25
ZyXEL Limited Warranty
Note 6
ZyXEL Utility 21
accessing 22
help 22
opening 22
system tray icon 22
upgrade 60
version 59
voltage 65
Web Site 7
WEP 28, 39, 56
manual setup 28, 40, 56
passphrase 28, 39, 56
WEP (Wired Equivalent Privacy) 28
WEP Encryption 39
Wi-Fi Protected Access 29, 91
Windows XP 21
wireless LAN
channel 27
encryption 31
Index
109

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Title                           : ZyXEL G-220F User’s Guide V1.00 (Oct 2004)
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