ZyXEL Communications P660WTXV2 802.11g Wireless ADSL2+ Router User Manual SMG 700 User s Guide V1 00 Nov 2004

ZyXEL Communications Corporation 802.11g Wireless ADSL2+ Router SMG 700 User s Guide V1 00 Nov 2004

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P-660W-Tx v2 User’s Guide 201

CHAPTER 20

Product Specifications

This chapter gives details about your ZyXEL Device’s hardware and firmware features.

20.1 General ZyXEL Device Specifications

The following tables summarize the ZyXEL Device’s hardware and firmware features.

Table 75 Hardware Specifications

SPECIFICATION DESCRIPTION

Dimensions (W x D x H) 190 x 128 x 33 mm

Weight 3.6 Kg

Power (devices that do not use an external power adaptor)

AC: 100 - 240V 50/60Hz 1.5A maximum input internal universal power

supply

DC: 48 - 60V 1.5A max, 48 Watt consumption. There is no tolerance for the

DC input voltage. This note is needed for DC powered devices, not AC.

Ethernet Ports Auto-negotiating: 10 Mbps or 100 Mbps in either half-duplex or full-duplex

mode.

Auto-crossover: Use either crossover or straight-through Ethernet cables.

Line/Phone Ports RJ-11 telephone wires.

LEDs

Operating Environment Temperature: 0º C ~ 50º C

Humidity: 20% ~ 95% RH

Storage Environment Temperature: -20º C ~ 60º C

Humidity: 10% ~ 90% RH

Distance between the

centers of the holes (for

wall mounting) on the

ZyXEL Device’s back.

125 mm

Chapter 20 Product Specifications

P-660W-Tx v2 User’s Guide

202

Recommended type of

screws for wall-mounting

M4 Tap Screw, see Figure 110 on page 206.

Approvals Safety

ANSI/UL Std No. 60950-1

CAN/CSA-C22.2 No 60950-1-03

EN 60950-1 1st Edition

IEC 60950-1 1st Edition

EMI

FCC Part 15 Class B

C-Tick

EN55022 Class B (1998+A1:2000+A2: 2003)

EN61000-3-2: 2000

EN61000-3-3: 1995+A1:2001

EMS

EN61000-4-2, EN61000-4-3, EN61000-4-4, EN61000-4-5, EN61000-4-

6, EN61000-4-8, EN61000-4-11, FCC Part 68, K.21 4KV by default.

EN 301 489 -1/17

EN 300 328

FCC Part 15.207/209/247

Table 76 Firmware Specifications

FEATURE DESCRIPTION

Default IP Address 192.168.1.1

Default Subnet Mask 255.255.255.0 (24 bits)

Default Password 1234

DHCP Pool 192.168.1.33 to 192.168.1.64

Device Management Use the web configurator to easily configure the rich range of features on

the ZyXEL Device.

Wireless Functionality Allow the IEEE 802.11b and/or IEEE 802.11g wireless clients to connect

to the ZyXEL Device wirelessly. Enable wireless security (WEP,

WPA(2), WPA(2)-PSK) and/or MAC filtering to protect your wireless

network.

Firmware Upgrade Download new firmware (when available) from the ZyXEL web site and

use the web configurator, an FTP or a TFTP tool to put it on the ZyXEL

Device.

Note: Only upload firmware for your specific model!

Configuration Backup &

Restoration

Make a copy of the ZyXEL Device’s configuration. You can put it back on

the ZyXEL Device later if you decide to revert back to an earlier

configuration.

Network Address

Translation (NAT)

Each computer on your network must have its own unique IP address.

Use NAT to convert your public IP address(es) to multiple private IP

addresses for the computers on your network.

Port Forwarding If you have a server (mail or web server for example) on your network,

you can use this feature to let people access it from the Internet.

DHCP (Dynamic Host

Configuration Protocol)

Use this feature to have the ZyXEL Device assign IP addresses, an IP

default gateway and DNS servers to computers on your network.

Table 75 Hardware Specifications

SPECIFICATION DESCRIPTION

Chapter 20 Product Specifications

P-660W-Tx v2 User’s Guide 203

The following list, which is not exhaustive, illustrates the standards supported in the ZyXEL

Device.

Dynamic DNS Support With Dynamic DNS (Domain Name System) support, you can use a

fixed URL, www.zyxel.com for example, with a dynamic IP address. You

must register for this service with a Dynamic DNS service provider.

IP Multicast IP multicast is used to send traffic to a specific group of computers. The

ZyXEL Device supports versions 1 and 2 of IGMP (Internet Group

Management Protocol) used to join multicast groups (see RFC 2236).

IP Alias IP alias allows you to subdivide a physical network into logical networks

over the same Ethernet interface with the ZyXEL Device itself as the

gateway for each subnet.

Time and Date Get the current time and date from an external server when you turn on

your ZyXEL Device. You can also set the time manually. These dates

and times are then used in logs.

Logging and Tracing Use packet tracing and logs for troubleshooting. You can send logs from

the ZyXEL Device to an external syslog server.

PPPoE PPPoE mimics a dial-up Internet access connection.

PPTP Encapsulation Point-to-Point Tunneling Protocol (PPTP) enables secure transfer of

data through a Virtual Private Network (VPN). The ZyXEL Device

supports one PPTP connection at a time.

Universal Plug and Play

(UPnP)

A UPnP-enabled device can dynamically join a network, obtain an IP

address and convey its capabilities to other devices on the network.

RoadRunner Support The ZyXEL Device supports Time Warner’s RoadRunner Service in

addition to standard cable modem services.

Firewall You can configure firewall on the ZyXEL Device for secure Internet

access. When the firewall is on, by default, all incoming traffic from the

Internet to your network is blocked unless it is initiated from your

network. This means that probes from the outside to your network are

not allowed, but you can safely browse the Internet and download files

for example.

Content Filter The ZyXEL Device blocks or allows access to web sites that you specify

and blocks access to web sites with URLs that contain keywords that

you specify. You can define time periods and days during which content

filtering is enabled. You can also include or exclude particular computers

on your network from content filtering.

You can also subscribe to category-based content filtering that allows

your ZyXEL Device to check web sites against an external database.

Bandwidth Management You can efficiently manage traffic on your network by reserving

bandwidth and giving priority to certain types of traffic and/or to particular

computers.

Remote Management This allows you to decide whether a service (HTTP or FTP traffic for

example) from a computer on a network (LAN or WAN for example) can

access the ZyXEL Device.

Table 77 Standards Supported

STANDARD DESCRIPTION

RFC 867 Daytime Protocol

RFC 868 Time Protocol.

RFC 1058 RIP-1 (Routing Information Protocol)

Table 76 Firmware Specifications

FEATURE DESCRIPTION

Chapter 20 Product Specifications

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RFC 1112 IGMP v1

RFC 1157 SNMPv1: Simple Network Management Protocol version 1

RFC 1305 Network Time Protocol (NTP version 3)

RFC 1441 SNMPv2 Simple Network Management Protocol version 2

RFC 1483 Multiprotocol Encapsulation over ATM Adaptation Layer 5

RFC 1631 IP Network Address Translator (NAT)

RFC 1661 The Point-to-Point Protocol (PPP)

RFC 1723 RIP-2 (Routing Information Protocol)

RFC 1901 SNMPv2c Simple Network Management Protocol version 2c

RFC 2236 Internet Group Management Protocol, Version 2.

RFC 2364 PPP over AAL5 (PPP over ATM over ADSL)

RFC 2408 Internet Security Association and Key Management Protocol (ISAKMP)

RFC 2516 A Method for Transmitting PPP Over Ethernet (PPPoE)

RFC 2684 Multiprotocol Encapsulation over ATM Adaptation Layer 5.

RFC 2766 Network Address Translation - Protocol

IEEE 802.11 Also known by the brand Wi-Fi, denotes a set of Wireless LAN/WLAN

standards developed by working group 11 of the IEEE LAN/MAN

Standards Committee (IEEE 802).

IEEE 802.11b Uses the 2.4 gigahertz (GHz) band

IEEE 802.11g Uses the 2.4 gigahertz (GHz) band

IEEE 802.11g+ Turbo and Super G modes

IEEE 802.11d Standard for Local and Metropolitan Area Networks: Media Access

Control (MAC) Bridges

IEEE 802.11x Port Based Network Access Control.

IEEE 802.11e QoS IEEE 802.11 e Wireless LAN for Quality of Service

ANSI T1.413, Issue 2 Asymmetric Digital Subscriber Line (ADSL) standard.

G dmt(G.992.1) G.992.1 Asymmetrical Digital Subscriber Line (ADSL) Transceivers

ITU G.992.1 (G.DMT) ITU standard for ADSL using discrete multitone modulation.

ITU G.992.2 (G. Lite) ITU standard for ADSL using discrete multitone modulation.

ITU G.992.3 (G.dmt.bis) ITU standard (also referred to as ADSL2) that extends the capability of

basic ADSL in data rates.

ITU G.992.4 (G.lite.bis) ITU standard (also referred to as ADSL2) that extends the capability of

basic ADSL in data rates.

ITU G.992.5 (ADSL2+) ITU standard (also referred to as ADSL2+) that extends the capability of

basic ADSL by doubling the number of downstream bits.

ITU-T G.993.1 (VDSL) ITU standard that defines VDSL.

ITU-T G.993.2 (VDSL2) ITU standard that defines VDSL2.

Microsoft PPTP MS PPTP (Microsoft's implementation of Point to Point Tunneling

Protocol)

MBM v2 Media Bandwidth Management v2

RFC 2383 ST2+ over ATM Protocol Specification - UNI 3.1 Version

Table 77 Standards Supported (continued)

STANDARD DESCRIPTION

Chapter 20 Product Specifications

P-660W-Tx v2 User’s Guide 205

20.2 Wall-mounting Instructions

Complete the following steps to hang your ZyXEL Device on a wall.

"See Table 75 on page 201 for the size of screws to use and how far apart to

place them.

1Select a position free of obstructions on a sturdy wall.

2Drill two holes for the screws.

1Be careful to avoid damaging pipes or cables located inside the wall when

drilling holes for the screws.

3Do not insert the screws all the way into the wall. Leave a small gap of about 0.5 cm

between the heads of the screws and the wall.

4Make sure the screws are snugly fastened to the wall. They need to hold the weight of

the ZyXEL Device with the connection cables.

5Align the holes on the back of the ZyXEL Device with the screws on the wall. Hang the

ZyXEL Device on the screws.

Figure 109 Wall-mounting Example

The following are dimensions of an M4 tap screw and masonry plug used for wall mounting.

All measurements are in millimeters (mm).

TR-069 TR-069 DSL Forum Standard for CPE Wan Management.

1.363.5 Compliant AAL5 SAR (Segmentation And Re-assembly)

Table 77 Standards Supported (continued)

STANDARD DESCRIPTION

Chapter 20 Product Specifications

P-660W-Tx v2 User’s Guide

206

Figure 110 Masonry Plug and M4 Tap Screw

20.3 Power Adaptor Specifications

Table 78 Power Adaptor Specifications

AC Power Adaptor Model MU12-2050200-A1

Input Power 100~240 Volts AC / 50~60Hz/0.25A

Output Power 5 Volts DC / 2A

Power Consumption 10 W

Safety Standards UL (UL 1950), CSA (CSA 22.2)

CE mark, EN60950 (2001)

T-Mark

C-tick, QAS

207

PART VI

Appendices

Pop-up Windows, JavaScripts and Java Permissions (209)

Wireless LANs (217)

Common Services (231)

Legal Information (235)

Customer Support (241)

208

P-660W-Tx v2 User’s Guide 209

APPENDIX A

Pop-up Windows, JavaScripts

and Java Permissions

In order to use the web configurator you need to allow:

• Web browser pop-up windows from your device.

• JavaScripts (enabled by default).

• Java permissions (enabled by default).

"Internet Explorer 6 screens are used here. Screens for other Internet Explorer

versions may vary.

Internet Explorer Pop-up Blockers

You may have to disable pop-up blocking to log into your device.

Either disable pop-up blocking (enabled by default in Windows XP SP (Service Pack) 2) or

allow pop-up blocking and create an exception for your device’s IP address.

Disable Pop-up Blockers

1In Internet Explorer, select Tools, Pop-up Blocker and then select Turn Off Pop-up

Blocker.

Figure 111 Pop-up Blocker

You can also check if pop-up blocking is disabled in the Pop-up Blocker section in the

Privacy tab.

1In Internet Explorer, select Tools, Internet Options, Privacy.

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210

2Clear the Block pop-ups check box in the Pop-up Blocker section of the screen. This

disables any web pop-up blockers you may have enabled.

Figure 112 Internet Options: Privacy

3Click Apply to save this setting.

Enable Pop-up Blockers with Exceptions

Alternatively, if you only want to allow pop-up windows from your device, see the following

steps.

1In Internet Explorer, select Tools, Internet Options and then the Privacy tab.

2Select Settings…to open the Pop-up Blocker Settings screen.

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P-660W-Tx v2 User’s Guide 211

Figure 113 Internet Options: Privacy

3Type the IP address of your device (the web page that you do not want to have blocked)

with the prefix “http://”. For example, http://192.168.167.1.

4Click Add to move the IP address to the list of Allowed sites.

Figure 114 Pop-up Blocker Settings

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212

5Click Close to return to the Privacy screen.

6Click Apply to save this setting.

JavaScripts

If pages of the web configurator do not display properly in Internet Explorer, check that

JavaScripts are allowed.

1In Internet Explorer, click Tools, Internet Options and then the Security tab.

Figure 115 Internet Options: Security

2Click the Custom Level... button.

3Scroll down to Scripting.

4Under Active scripting make sure that Enable is selected (the default).

5Under Scripting of Java applets make sure that Enable is selected (the default).

6Click OK to close the window.

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P-660W-Tx v2 User’s Guide 213

Figure 116 Security Settings - Java Scripting

Java Permissions

1From Internet Explorer, click Tools, Internet Options and then the Security tab.

2Click the Custom Level... button.

3Scroll down to Microsoft VM.

4Under Java permissions make sure that a safety level is selected.

5Click OK to close the window.

Figure 117 Security Settings - Java

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214

JAVA (Sun)

1From Internet Explorer, click Tools, Internet Options and then the Advanced tab.

2Make sure that Use Java 2 for <applet> under Java (Sun) is selected.

3Click OK to close the window.

Figure 118 Java (Sun)

Mozilla Firefox

Mozilla Firefox 2.0 screens are used here. Screens for other versions may vary.

You can enable Java, Javascripts and pop-ups in one screen. Click To ols, then click Options

in the screen that appears.

Appendix A Pop-up Windows, JavaScripts and Java Permissions

P-660W-Tx v2 User’s Guide 215

Figure 119 Mozilla Firefox: Tools > Options

Click Content.to show the screen below. Select the check boxes as shown in the following

screen.

Figure 120 Mozilla Firefox Content Security

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P-660W-Tx v2 User’s Guide 217

APPENDIX B

Wireless LANs

Wireless LAN Topologies

This section discusses ad-hoc and infrastructure wireless LAN topologies.

Ad-hoc Wireless LAN Configuration

The simplest WLAN configuration is an independent (Ad-hoc) WLAN that connects a set of

computers with wireless adapters (A, B, C). Any time two or more wireless adapters are within

range of each other, they can set up an independent network, which is commonly referred to as

an ad-hoc network or Independent Basic Service Set (IBSS). The following diagram shows an

example of notebook computers using wireless adapters to form an ad-hoc wireless LAN.

Figure 121 Peer-to-Peer Communication in an Ad-hoc Network

BSS

A Basic Service Set (BSS) exists when all communications between wireless clients or

between a wireless client and a wired network client go through one access point (AP).

Intra-BSS traffic is traffic between wireless clients in the BSS. When Intra-BSS is enabled,

wireless client A and B can access the wired network and communicate with each other. When

Intra-BSS is disabled, wireless client A and B can still access the wired network but cannot

communicate with each other.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide

218

Figure 122 Basic Service Set

ESS

An Extended Service Set (ESS) consists of a series of overlapping BSSs, each containing an

access point, with each access point connected together by a wired network. This wired

connection between APs is called a Distribution System (DS).

This type of wireless LAN topology is called an Infrastructure WLAN. The Access Points not

only provide communication with the wired network but also mediate wireless network traffic

in the immediate neighborhood.

An ESSID (ESS IDentification) uniquely identifies each ESS. All access points and their

associated wireless clients within the same ESS must have the same ESSID in order to

communicate.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide 219

Figure 123 Infrastructure WLAN

Channel

A channel is the radio frequency(ies) used by wireless devices to transmit and receive data.

Channels available depend on your geographical area. You may have a choice of channels (for

your region) so you should use a channel different from an adjacent AP (access point) to

reduce interference. Interference occurs when radio signals from different access points

overlap causing interference and degrading performance.

Adjacent channels partially overlap however. To avoid interference due to overlap, your AP

should be on a channel at least five channels away from a channel that an adjacent AP is using.

For example, if your region has 11 channels and an adjacent AP is using channel 1, then you

need to select a channel between 6 or 11.

RTS/CTS

A hidden node occurs when two stations are within range of the same access point, but are not

within range of each other. The following figure illustrates a hidden node. Both stations (STA)

are within range of the access point (AP) or wireless gateway, but out-of-range of each other,

so they cannot "hear" each other, that is they do not know if the channel is currently being

used. Therefore, they are considered hidden from each other.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide

220

Figure 124 RTS/CTS

When station A sends data to the AP, it might not know that the station B is already using the

channel. If these two stations send data at the same time, collisions may occur when both sets

of data arrive at the AP at the same time, resulting in a loss of messages for both stations.

RTS/CTS is designed to prevent collisions due to hidden nodes. An RTS/CTS defines the

biggest size data frame you can send before an RTS (Request To Send)/CTS (Clear to Send)

handshake is invoked.

When a data frame exceeds the RTS/CTS value you set (between 0 to 2432 bytes), the station

that wants to transmit this frame must first send an RTS (Request To Send) message to the AP

for permission to send it. The AP then responds with a CTS (Clear to Send) message to all

other stations within its range to notify them to defer their transmission. It also reserves and

confirms with the requesting station the time frame for the requested transmission.

Stations can send frames smaller than the specified RTS/CTS directly to the AP without the

RTS (Request To Send)/CTS (Clear to Send) handshake.

You should only configure RTS/CTS if the possibility of hidden nodes exists on your network

and the "cost" of resending large frames is more than the extra network overhead involved in

the RTS (Request To Send)/CTS (Clear to Send) handshake.

If the RTS/CTS value is greater than the Fragmentation Threshold value (see next), then the

RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as data frames will

be fragmented before they reach RTS/CTS size.

"Enabling the RTS Threshold causes redundant network overhead that could

negatively affect the throughput performance instead of providing a remedy.

Fragmentation Threshold

A Fragmentation Threshold is the maximum data fragment size (between 256 and 2432

bytes) that can be sent in the wireless network before the AP will fragment the packet into

smaller data frames.

A large Fragmentation Threshold is recommended for networks not prone to interference

while you should set a smaller threshold for busy networks or networks that are prone to

interference.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide 221

If the Fragmentation Threshold value is smaller than the RTS/CTS value (see previously)

you set then the RTS (Request To Send)/CTS (Clear to Send) handshake will never occur as

data frames will be fragmented before they reach RTS/CTS size.

Preamble Type

Preamble is used to signal that data is coming to the receiver. Short and long refer to the length

of the synchronization field in a packet.

Short preamble increases performance as less time sending preamble means more time for

sending data. All IEEE 802.11 compliant wireless adapters support long preamble, but not all

support short preamble.

Use long preamble if you are unsure what preamble mode other wireless devices on the

network support, and to provide more reliable communications in busy wireless networks.

Use short preamble if you are sure all wireless devices on the network support it, and to

provide more efficient communications.

Use the dynamic setting to automatically use short preamble when all wireless devices on the

network support it, otherwise the ZyXEL Device uses long preamble.

"The wireless devices MUST use the same preamble mode in order to

communicate.

IEEE 802.11g Wireless LAN

IEEE 802.11g is fully compatible with the IEEE 802.11b standard. This means an IEEE

802.11b adapter can interface directly with an IEEE 802.11g access point (and vice versa) at

11 Mbps or lower depending on range. IEEE 802.11g has several intermediate rate steps

between the maximum and minimum data rates. The IEEE 802.11g data rate and modulation

are as follows:

Wireless Security Overview

Wireless security is vital to your network to protect wireless communication between wireless

clients, access points and the wired network.

Table 79 IEEE 802.11g

DATA RATE (MBPS) MODULATION

1 DBPSK (Differential Binary Phase Shift Keyed)

2 DQPSK (Differential Quadrature Phase Shift Keying)

5.5 / 11 CCK (Complementary Code Keying)

6/9/12/18/24/36/48/54 OFDM (Orthogonal Frequency Division Multiplexing)

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide

222

Wireless security methods available on the ZyXEL Device are data encryption, wireless client

authentication, restricting access by device MAC address and hiding the ZyXEL Device

identity.

The following figure shows the relative effectiveness of these wireless security methods

available on your ZyXEL Device.

"You must enable the same wireless security settings on the ZyXEL Device and

on all wireless clients that you want to associate with it.

IEEE 802.1x

In June 2001, the IEEE 802.1x standard was designed to extend the features of IEEE 802.11 to

support extended authentication as well as providing additional accounting and control

features. It is supported by Windows XP and a number of network devices. Some advantages

of IEEE 802.1x are:

• User based identification that allows for roaming.

• Support for RADIUS (Remote Authentication Dial In User Service, RFC 2138, 2139) for

centralized user profile and accounting management on a network RADIUS server.

• Support for EAP (Extensible Authentication Protocol, RFC 2486) that allows additional

authentication methods to be deployed with no changes to the access point or the wireless

clients.

RADIUS

RADIUS is based on a client-server model that supports authentication, authorization and

accounting. The access point is the client and the server is the RADIUS server. The RADIUS

server handles the following tasks:

• Authentication

Determines the identity of the users.

• Authorization

Table 80 Wireless Security Levels

SECURITY

LEVEL SECURITY TYPE

Least

S e c u r e

Most Secure

Unique SSID (Default)

Unique SSID with Hide SSID Enabled

MAC Address Filtering

WEP Encryption

IEEE802.1x EAP with RADIUS Server Authentication

Wi-Fi Protected Access (WPA)

WPA2

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide 223

Determines the network services available to authenticated users once they are connected

to the network.

• Accounting

Keeps track of the client’s network activity.

RADIUS is a simple package exchange in which your AP acts as a message relay between the

wireless client and the network RADIUS server.

Types of RADIUS Messages

The following types of RADIUS messages are exchanged between the access point and the

RADIUS server for user authentication:

• Access-Request

Sent by an access point requesting authentication.

• Access-Reject

Sent by a RADIUS server rejecting access.

• Access-Accept

Sent by a RADIUS server allowing access.

• Access-Challenge

Sent by a RADIUS server requesting more information in order to allow access. The

access point sends a proper response from the user and then sends another Access-Request

message.

The following types of RADIUS messages are exchanged between the access point and the

RADIUS server for user accounting:

• Accounting-Request

Sent by the access point requesting accounting.

• Accounting-Response

Sent by the RADIUS server to indicate that it has started or stopped accounting.

In order to ensure network security, the access point and the RADIUS server use a shared

secret key, which is a password, they both know. The key is not sent over the network. In

addition to the shared key, password information exchanged is also encrypted to protect the

network from unauthorized access.

Types of EAP Authentication

This section discusses some popular authentication types: EAP-MD5, EAP-TLS, EAP-TTLS,

PEAP and LEAP. Your wireless LAN device may not support all authentication types.

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. .

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide

224

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.

EAP-MD5 (Message-Digest Algorithm 5)

MD5 authentication is the simplest one-way authentication method. The authentication server

sends a challenge to the wireless client. The wireless client ‘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 clients 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.

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.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide 225

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 security configuration screen. You may still configure and store keys, but they will

not be used while dynamic WEP is enabled.

"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.

WPA and WPA2

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 or WPA2 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.

Table 81 Comparison of EAP Authentication Types

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 B Wireless LANs

P-660W-Tx v2 User’s Guide

226

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 clients. 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.

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 clients 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 successful

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.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide 227

Wireless Client WPA Supplicants

A wireless client supplicant is the software that runs on an operating system instructing the

wireless client how to use WPA. At the time of writing, the most widely available supplicant is

the WPA patch for Windows XP, Funk Software's Odyssey client.

The Windows XP patch is a free download that adds WPA capability to Windows XP's built-

in "Zero Configuration" wireless client. However, you must run Windows XP to use it.

WPA(2) with RADIUS Application Example

To set up WPA(2), 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.

1The AP passes the wireless client's authentication request to the RADIUS server.

2The RADIUS server then checks the user's identification against its database and grants

or denies network access accordingly.

3A 256-bit Pairwise Master Key (PMK) is derived from the authentication process by the

RADIUS server and the client.

4The RADIUS server distributes the PMK to the AP. The AP then sets up a key hierarchy

and management system, using the PMK to dynamically generate unique data encryption

keys. The keys are used to encrypt every data packet that is wirelessly communicated

between the AP and the wireless clients.

Figure 125 WPA(2) with RADIUS Application Example

WPA(2)-PSK Application Example

A WPA(2)-PSK application looks as follows.

1First 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).

2The AP checks each wireless client's password and allows it to join the network only if

the password matches.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide

228

3The AP and wireless clients generate a common PMK (Pairwise Master Key). The key

itself is not sent over the network, but is derived from the PSK and the SSID.

4The AP and wireless clients use the TKIP or AES encryption process, the PMK and

information exchanged in a handshake to create temporal encryption keys. They use

these keys to encrypt data exchanged between them.

Figure 126 WPA(2)-PSK Authentication

Security Parameters Summary

Refer to this table to see what other security parameters you should configure for each

authentication method or key management protocol type. MAC address filters are not

dependent on how you configure these security features.

Table 82 Wireless Security Relational Matrix

AUTHENTICATION

METHOD/ KEY

MANAGEMENT PROTOCOL

ENCRYPTIO

N METHOD

ENTER

MANUAL KEY IEEE 802.1X

Open None No Disable

Enable without Dynamic WEP Key

Open WEP No Enable with Dynamic WEP Key

Yes Enable without Dynamic WEP Key

Yes Disable

Shared WEP 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 B Wireless LANs

P-660W-Tx v2 User’s Guide 229

Antenna Overview

An antenna couples RF signals onto air. A transmitter within a wireless device sends an RF

signal to the antenna, which propagates the signal through the air. The antenna also operates in

reverse by capturing RF signals from the air.

Positioning the antennas properly increases the range and coverage area of a wireless LAN.

Antenna Characteristics

Frequency

An antenna in the frequency of 2.4GHz (IEEE 802.11b and IEEE 802.11g) or 5GHz (IEEE

802.11a) is needed to communicate efficiently in a wireless LAN

Radiation Pattern

A radiation pattern is a diagram that allows you to visualize the shape of the antenna’s

coverage area.

Antenna Gain

Antenna gain, measured in dB (decibel), is the increase in coverage within the RF beam width.

Higher antenna gain improves the range of the signal for better communications.

For an indoor site, each 1 dB increase in antenna gain results in a range increase of

approximately 2.5%. For an unobstructed outdoor site, each 1dB increase in gain results in a

range increase of approximately 5%. Actual results may vary depending on the network

environment.

Antenna gain is sometimes specified in dBi, which is how much the antenna increases the

signal power compared to using an isotropic antenna. An isotropic antenna is a theoretical

perfect antenna that sends out radio signals equally well in all directions. dBi represents the

true gain that the antenna provides.

Types of Antennas for WLAN

There are two types of antennas used for wireless LAN applications.

• Omni-directional antennas send the RF signal out in all directions on a horizontal plane.

The coverage area is torus-shaped (like a donut) which makes these antennas ideal for a

room environment. With a wide coverage area, it is possible to make circular overlapping

coverage areas with multiple access points.

• Directional antennas concentrate the RF signal in a beam, like a flashlight does with the

light from its bulb. The angle of the beam determines the width of the coverage pattern.

Angles typically range from 20 degrees (very directional) to 120 degrees (less directional).

Directional antennas are ideal for hallways and outdoor point-to-point applications.

Appendix B Wireless LANs

P-660W-Tx v2 User’s Guide

230

Positioning Antennas

In general, antennas should be mounted as high as practically possible and free of

obstructions. In point-to–point application, position both antennas at the same height and in a

direct line of sight to each other to attain the best performance.

For omni-directional antennas mounted on a table, desk, and so on, point the antenna up. For

omni-directional antennas mounted on a wall or ceiling, point the antenna down. For a single

AP application, place omni-directional antennas as close to the center of the coverage area as

possible.

For directional antennas, point the antenna in the direction of the desired coverage area.

P-660W-Tx v2 User’s Guide 231

APPENDIX C

Common Services

The following table lists some commonly-used services and their associated protocols and port

numbers. For a comprehensive list of port numbers, ICMP type/code numbers and services,

visit the IANA (Internet Assigned Number Authority) web site.

•Name: This is a short, descriptive name for the service. You can use this one or create a

different one, if you like.

•Protocol: This is the type of IP protocol used by the service. If this is TCP/UDP, then the

service uses the same port number with TCP and UDP. If this is USER-DEFINED, the

Port(s) is the IP protocol number, not the port number.

•Port(s): This value depends on the Protocol. Please refer to RFC 1700 for further

information about port numbers.

• If the Protocol is TCP, UDP, or TCP/UDP, this is the IP port number.

• If the Protocol is USER, this is the IP protocol number.

•Description: This is a brief explanation of the applications that use this service or the

situations in which this service is used.

Table 83 Commonly Used Services

NAME PROTOCOL PORT(S) DESCRIPTION

(IPSEC_TUNNEL)

User-Defined 51 The IPSEC AH (Authentication Header)

tunneling protocol uses this service.

AIM/New-ICQ TCP 5190 AOL’s Internet Messenger service. It is also

used as a listening port by ICQ.

AUTH TCP 113 Authentication protocol used by some

servers.

BGP TCP 179 Border Gateway Protocol.

BOOTP_CLIENT UDP 68 DHCP Client.

BOOTP_SERVER UDP 67 DHCP Server.

CU-SEEME TCP

UDP

7648

24032

A popular videoconferencing solution from

White Pines Software.

DNS TCP/UDP 53 Domain Name Server, a service that

matches web names (for example

www.zyxel.com) to IP numbers.

ESP

(IPSEC_TUNNEL)

User-Defined 50 The IPSEC ESP (Encapsulation Security

Protocol) tunneling protocol uses this

service.

FINGER TCP 79 Finger is a UNIX or Internet related

command that can be used to find out if a

user is logged on.

Appendix C Common Services

P-660W-Tx v2 User’s Guide

232

FTP TCP

TCP

File Transfer Program, a program to enable

fast transfer of files, including large files

that may not be possible by e-mail.

H.323 TCP 1720 NetMeeting uses this protocol.

HTTP TCP 80 Hyper Text Transfer Protocol - a client/

server protocol for the world wide web.

HTTPS TCP 443 HTTPS is a secured http session often

used in e-commerce.

ICMP User-Defined 1Internet Control Message Protocol is often

used for diagnostic or routing purposes.

ICQ UDP 4000 This is a popular Internet chat program.

IGMP

(MULTICAST)

User-Defined 2Internet Group Management Protocol is

used when sending packets to a specific

group of hosts.

IKE UDP 500 The Internet Key Exchange algorithm is

used for key distribution and management.

IRC TCP/UDP 6667 This is another popular Internet chat

program.

MSN Messenger TCP 1863 Microsoft Networks’ messenger service

uses this protocol.

NEW-ICQ TCP 5190 An Internet chat program.

NEWS TCP 144 A protocol for news groups.

NFS UDP 2049 Network File System - NFS is a client/

server distributed file service that provides

transparent file sharing for network

environments.

NNTP TCP 119 Network News Transport Protocol is the

delivery mechanism for the USENET

newsgroup service.

PING User-Defined 1Packet INternet Groper is a protocol that

sends out ICMP echo requests to test

whether or not a remote host is reachable.

POP3 TCP 110 Post Office Protocol version 3 lets a client

computer get e-mail from a POP3 server

through a temporary connection (TCP/IP or

other).

PPTP TCP 1723 Point-to-Point Tunneling Protocol enables

secure transfer of data over public

networks. This is the control channel.

PPTP_TUNNEL

(GRE)

User-Defined 47 PPTP (Point-to-Point Tunneling Protocol)

enables secure transfer of data over public

networks. This is the data channel.

RCMD TCP 512 Remote Command Service.

REAL_AUDIO TCP 7070 A streaming audio service that enables real

time sound over the web.

REXEC TCP 514 Remote Execution Daemon.

RLOGIN TCP 513 Remote Login.

RTELNET TCP 107 Remote Telnet.

Table 83 Commonly Used Services (continued)

NAME PROTOCOL PORT(S) DESCRIPTION

Appendix C Common Services

P-660W-Tx v2 User’s Guide 233

RTSP TCP/UDP 554 The Real Time Streaming (media control)

Protocol (RTSP) is a remote control for

multimedia on the Internet.

SFTP TCP 115 Simple File Transfer Protocol.

SMTP TCP 25 Simple Mail Transfer Protocol is the

message-exchange standard for the

Internet. SMTP enables you to move

messages from one e-mail server to

another.

SNMP TCP/UDP 161 Simple Network Management Program.

SNMP-TRAPS TCP/UDP 162 Traps for use with the SNMP (RFC:1215).

SQL-NET TCP 1521 Structured Query Language is an interface

to access data on many different types of

database systems, including mainframes,

midrange systems, UNIX systems and

network servers.

SSH TCP/UDP 22 Secure Shell Remote Login Program.

STRM WORKS UDP 1558 Stream Works Protocol.

SYSLOG UDP 514 Syslog allows you to send system logs to a

UNIX server.

TACACS UDP 49 Login Host Protocol used for (Terminal

Access Controller Access Control System).

TELNET TCP 23 Telnet is the login and terminal emulation

protocol common on the Internet and in

UNIX environments. It operates over TCP/

IP networks. Its primary function is to allow

users to log into remote host systems.

TFTP UDP 69 Trivial File Transfer Protocol is an Internet

file transfer protocol similar to FTP, but

uses the UDP (User Datagram Protocol)

rather than TCP (Transmission Control

Protocol).

VDOLIVE TCP 7000 Another videoconferencing solution.

Table 83 Commonly Used Services (continued)

NAME PROTOCOL PORT(S) DESCRIPTION

Appendix C Common Services

P-660W-Tx v2 User’s Guide

234

P-660W-Tx v2 User’s Guide 235

APPENDIX D

Legal Information

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.

Disclaimers

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.

Your use of the ZyXEL Device is subject to the terms and conditions of any related service

providers. Use with products that have NAT, and/or 3G.

Do not use the ZyXEL Device for illegal purposes. Illegal downloading or sharing of files can

result in severe civil and criminal penalties. You are subject to the restrictions of copyright

laws and any other applicable laws, and will bear the consequences of any infringements

thereof. ZyXEL bears NO responsibility or liability for your use of the download service

feature. Use for products that have a download service.

Make sure all data and programs on the ZyXEL Device are also stored elsewhere. ZyXEL is

not responsible for any loss of or damage to any data, programs, or storage media resulting

from the use, misuse, or disuse of this or any other ZyXEL product. Use for storage/backup

devices.

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.

Appendix D Legal Information

Certifications

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 device 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 residential installation. This

device 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. However, there is no guarantee that interference will not

occur in a particular installation. If this device does cause harmful interference to

radio/television reception, which can be determined by turning the device 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.

FCC Radiation Exposure Statement

• This equipment must be installed and operated in accordance with provided instructions and the

antenna(s) used for this transmitter must be installed to provide a separation distance of at least 20

cm from all persons and must not be co-located or operating in conjunction with any other

antenna or transmitter.

• IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to

channels 1 through 11.

• End-users and installers must be provide with antenna installation instructions and transmitter

operating conditions for satisfying RF exposure compliance.

Appendix D Legal Information

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。

本機限在不干擾合法電臺與不受被干擾保障條件下於室內使用。

減少電磁波影響，請妥適使用。

Notices

Any changes or modifications not expressly approved by the grantee of this device

could void the user's authority to operate the equipment.

This device has been designed for the WLAN 2.4 GHz network throughout the EC

region and Switzerland, with restrictions in France.

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

Viewing Certifications

1 Go to http://www.zyxel.com.

2 Select your product on the ZyXEL home page to go to that product's page.

3 Select the certification you wish to view from this page.

Appendix D Legal Information

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 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 your vendor. You may also refer to the warranty policy for the region in

which you bought the device at http://www.zyxel.com/web/

support_warranty_info.php.

Registration

information at www.zyxel.com.

Appendix D Legal Information

P-660W-Tx v2 User’s Guide

240

P-660W-Tx v2 User’s Guide 241

APPENDIX E

Customer Support

In the event of problems that cannot be solved by using this manual, you should contact your

vendor. If you cannot contact your vendor, then contact a ZyXEL office for the region in

which you bought the device. Regional offices are listed below (see also http://

www.zyxel.com/web/contact_us.php). Please have the following information ready when you

contact an office.

Required Information

• 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.

“+” is the (prefix) number you dial to make an international telephone call.

Corporate Headquarters (Worldwide)

• Support E-mail: support@zyxel.com.tw

• Sales E-mail: sales@zyxel.com.tw

• Telephone: +886-3-578-3942

• Fax: +886-3-578-2439

• Web: www.zyxel.com

• Regular Mail: ZyXEL Communications Corp., 6 Innovation Road II, Science Park,

Hsinchu 300, Taiwan

China - ZyXEL Communications (Beijing) Corp.

• Support E-mail: cso.zycn@zyxel.cn

• Sales E-mail: sales@zyxel.cn

• Telephone: +86-010-82800646

• Fax: +86-010-82800587

• Address: 902, Unit B, Horizon Building, No.6, Zhichun Str, Haidian District, Beijing

• Web: http://www.zyxel.cn

China - ZyXEL Communications (Shanghai) Corp.

• Support E-mail: cso.zycn@zyxel.cn

• Sales E-mail: sales@zyxel.cn

• Telephone: +86-021-61199055

• Fax: +86-021-52069033

Appendix E Customer Support

P-660W-Tx v2 User’s Guide

242

• Address: 1005F, ShengGao International Tower, No.137 XianXia Rd., Shanghai

• Web: http://www.zyxel.cn

Costa Rica

• Support E-mail: soporte@zyxel.co.cr

• Sales E-mail: sales@zyxel.co.cr

• Telephone: +506-2017878

• Fax: +506-2015098

• Web: www.zyxel.co.cr

• Regular Mail: ZyXEL Costa Rica, Plaza Roble Escazú, Etapa El Patio, Tercer Piso, San

José, Costa Rica

Czech Republic

• E-mail: info@cz.zyxel.com

• Telephone: +420-241-091-350

• Fax: +420-241-091-359

• Web: www.zyxel.cz

• Regular Mail: ZyXEL Communications, Czech s.r.o., Modranská 621, 143 01 Praha 4 -

Modrany, Ceská Republika

Denmark

• Support E-mail: support@zyxel.dk

• Sales E-mail: sales@zyxel.dk

• Telephone: +45-39-55-07-00

• Fax: +45-39-55-07-07

• Web: www.zyxel.dk

• Regular Mail: ZyXEL Communications A/S, Columbusvej, 2860 Soeborg, Denmark

Finland

• Support E-mail: support@zyxel.fi

• Sales E-mail: sales@zyxel.fi

• Telephone: +358-9-4780-8411

• Fax: +358-9-4780-8448

• Web: www.zyxel.fi

• Regular Mail: ZyXEL Communications Oy, Malminkaari 10, 00700 Helsinki, Finland

France

• E-mail: info@zyxel.fr

• Telephone: +33-4-72-52-97-97

• Fax: +33-4-72-52-19-20

• Web: www.zyxel.fr

• Regular Mail: ZyXEL France, 1 rue des Vergers, Bat. 1 / C, 69760 Limonest, France

Appendix E Customer Support

P-660W-Tx v2 User’s Guide 243

Germany

• Support E-mail: support@zyxel.de

• Sales E-mail: sales@zyxel.de

• Telephone: +49-2405-6909-69

• Fax: +49-2405-6909-99

• Web: www.zyxel.de

• Regular Mail: ZyXEL Deutschland GmbH., Adenauerstr. 20/A2 D-52146, Wuerselen,

Germany

Hungary

• Support E-mail: support@zyxel.hu

• Sales E-mail: info@zyxel.hu

• Telephone: +36-1-3361649

• Fax: +36-1-3259100

• Web: www.zyxel.hu

• Regular Mail: ZyXEL Hungary, 48, Zoldlomb Str., H-1025, Budapest, Hungary

India

• Support E-mail: support@zyxel.in

• Sales E-mail: sales@zyxel.in

• Telephone: +91-11-30888144 to +91-11-30888153

• Fax: +91-11-30888149, +91-11-26810715

• Web: http://www.zyxel.in

• Regular Mail: India - ZyXEL Technology India Pvt Ltd., II-Floor, F2/9 Okhla Phase -1,

New Delhi 110020, India

Japan

• Support E-mail: support@zyxel.co.jp

• Sales E-mail: zyp@zyxel.co.jp

• Telephone: +81-3-6847-3700

• Fax: +81-3-6847-3705

• Web: www.zyxel.co.jp

• Regular Mail: ZyXEL Japan, 3F, Office T&U, 1-10-10 Higashi-Gotanda, Shinagawa-ku,

Tokyo 141-0022, Japan

Kazakhstan

• Support: http://zyxel.kz/support

• Sales E-mail: sales@zyxel.kz

• Telephone: +7-3272-590-698

• Fax: +7-3272-590-689

• Web: www.zyxel.kz

• Regular Mail: ZyXEL Kazakhstan, 43 Dostyk Ave., Office 414, Dostyk Business Centre,

050010 Almaty, Republic of Kazakhstan

Appendix E Customer Support

P-660W-Tx v2 User’s Guide

244

Malaysia

• Support E-mail: support@zyxel.com.my

• Sales E-mail: sales@zyxel.com.my

• Telephone: +603-8076-9933

• Fax: +603-8076-9833

• Web: http://www.zyxel.com.my

• Regular Mail: ZyXEL Malaysia Sdn Bhd., 1-02 & 1-03, Jalan Kenari 17F, Bandar

Puchong Jaya, 47100 Puchong, Selangor Darul Ehsan, Malaysia

North America

• Support E-mail: support@zyxel.com

• Support Telephone: +1-800-978-7222

• Sales E-mail: sales@zyxel.com

• Sales Telephone: +1-714-632-0882

• Fax: +1-714-632-0858

• Web: www.zyxel.com

• Regular Mail: ZyXEL Communications Inc., 1130 N. Miller St., Anaheim, CA 92806-

2001, U.S.A.

Norway

• Support E-mail: support@zyxel.no

• Sales E-mail: sales@zyxel.no

• Telephone: +47-22-80-61-80

• Fax: +47-22-80-61-81

• Web: www.zyxel.no

• Regular Mail: ZyXEL Communications A/S, Nils Hansens vei 13, 0667 Oslo, Norway

Poland

• E-mail: info@pl.zyxel.com

• Telephone: +48-22-333 8250

• Fax: +48-22-333 8251

• Web: www.pl.zyxel.com

• Regular Mail: ZyXEL Communications, ul. Okrzei 1A, 03-715 Warszawa, Poland

Russia

• Support: http://zyxel.ru/support

• Sales E-mail: sales@zyxel.ru

• Telephone: +7-095-542-89-29

• Fax: +7-095-542-89-25

• Web: www.zyxel.ru

• Regular Mail: ZyXEL Russia, Ostrovityanova 37a Str., Moscow 117279, Russia

Appendix E Customer Support

P-660W-Tx v2 User’s Guide 245

Singapore

• Support E-mail: support@zyxel.com.sg

• Sales E-mail: sales@zyxel.com.sg

• Telephone: +65-6899-6678

• Fax: +65-6899-8887

• Web: http://www.zyxel.com.sg

• Regular Mail: ZyXEL Singapore Pte Ltd., No. 2 International Business Park, The Strategy

#03-28, Singapore 609930

Spain

• Support E-mail: support@zyxel.es

• Sales E-mail: sales@zyxel.es

• Telephone: +34-902-195-420

• Fax: +34-913-005-345

• Web: www.zyxel.es

• Regular Mail: ZyXEL Communications, Arte, 21 5ª planta, 28033 Madrid, Spain

Sweden

• Support E-mail: support@zyxel.se

• Sales E-mail: sales@zyxel.se

• Telephone: +46-31-744-7700

• Fax: +46-31-744-7701

• Web: www.zyxel.se

• Regular Mail: ZyXEL Communications A/S, Sjöporten 4, 41764 Göteborg, Sweden

Taiwan

• Support E-mail: support@zyxel.com.tw

• Sales E-mail: sales@zyxel.com.tw

• Telephone: +886-2-27399889

• Fax: +886-2-27353220

• Web: http://www.zyxel.com.tw

• Address: Room B, 21F., No.333, Sec. 2, Dunhua S. Rd., Da-an District, Taipei

Thailand

• Support E-mail: support@zyxel.co.th

• Sales E-mail: sales@zyxel.co.th

• Telephone: +662-831-5315

• Fax: +662-831-5395

• Web: http://www.zyxel.co.th

• Regular Mail: ZyXEL Thailand Co., Ltd., 1/1 Moo 2, Ratchaphruk Road, Bangrak-Noi,

Muang, Nonthaburi 11000, Thailand.

Appendix E Customer Support

P-660W-Tx v2 User’s Guide

246

Turkey

• Support E-mail: cso@zyxel.com.tr

• Telephone: +90 212 222 55 22

• Fax: +90-212-220-2526

• Web: http:www.zyxel.com.tr

• Address: Kaptanpasa Mahallesi Piyalepasa Bulvari Ortadogu Plaza N:14/13 K:6

Okmeydani/Sisli Istanbul/Turkey

Ukraine

• Support E-mail: support@ua.zyxel.com

• Sales E-mail: sales@ua.zyxel.com

• Telephone: +380-44-247-69-78

• Fax: +380-44-494-49-32

• Web: www.ua.zyxel.com

• Regular Mail: ZyXEL Ukraine, 13, Pimonenko Str., Kiev 04050, Ukraine

United Kingdom

• Support E-mail: support@zyxel.co.uk

• Sales E-mail: sales@zyxel.co.uk

• Telephone: +44-1344-303044, 0845 122 0301 (UK only)

• Fax: +44-1344-303034

• Web: www.zyxel.co.uk

• Regular Mail: ZyXEL Communications UK Ltd., 11 The Courtyard, Eastern Road,

Bracknell, Berkshire RG12 2XB, United Kingdom (UK)

Index

P-660W-Tx v2 User’s Guide 247

Index

Access point 65

ZyXEL Communications P660WTXV2 802.11g Wireless ADSL2+ Router User Manual SMG 700 User s Guide V1 00 Nov 2004

ZyXEL Communications Corporation 802.11g Wireless ADSL2+ Router SMG 700 User s Guide V1 00 Nov 2004

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