Linksys WAG54G - Wireless-G ADSL Gateway Wireless... User manual

A Division of Cisco Systems, Inc.
®
Model No.
ADSL Gateway
Wireless-G
WAG54G
User Guide
WIRELESS
GHz
2.4
802.11g

Wireless-G ADSL Gateway
Copyright and Trademarks
Specifications are subject to change without notice. Linksys is a registered trademark or trademark of Cisco
Systems, Inc. and/or its affiliates in the U.S. and certain other countries. Copyright © 2004 Cisco Systems, Inc. All
rights reserved. Other brands and product names are trademarks or registered trademarks of their respective
holders.
How to Use this Guide
Your Guide to the Wireless-G ADSL Gateway has been designed to make understanding networking with the
Gateway easier than ever. Look for the following items when reading this User Guide:
In addition to these symbols, there are definitions for technical terms that are presented like this:
Also, each figure (diagram, screenshot, or other image) is provided with a figure number and description, like
this:
Figure numbers and descriptions can also be found in the “List of Figures” section in the “Table of Contents”.
This exclamation point means there is a Caution or
Warning and is something that could damage your
property or the Gateway.
word: definition.
This checkmark means there is a Note of interest and
is something you should pay special attention to while
using the Gateway.
This question mark provides you with a reminder about
something you might need to do while using the Gateway.
Figure 0-1: Sample Figure Description
WAG54G-EU_V1.2-UG-40113NC JL

Wireless-G ADSL Gateway
Table of Contents
Chapter 1: Introduction 1
Welcome 1
What’s in this Guide? 2
Chapter 2: Planning Your Network 4
The Gateway’s Functions 4
IP Addresses 4
Why do I need a VPN? 5
What is a VPN? 6
Chapter 3: Getting to Know the Wireless-G ADSL Gateway 8
The Back Panel 8
The Front Panel 9
Chapter 4: Connecting the Wireless-G Broadband Gateway 10
Overview 10
Wired Connection to a Computer 11
Wireless Connection to a Computer 11
Chapter 5: Configuring the Gateway 13
Overview 13
How to Access the Web-based Utility 15
The Setup Tab 15
The Wireless Tab 23
The Security Tab 26
The Access Restrictions Tab 31
The Applications and Gaming Tab 33
The Administration Tab 36
The Status Tab 41
Appendix A: Troubleshooting 45
Common Problems and Solutions 45
Frequently Asked Questions 53
Appendix B: Wireless Security 59
Appendix C: Configuring IPSec between a
Windows 2000 or XP Computer and the Gateway 62
Introduction 62

Wireless-G ADSL Gateway
Environment 62
How to Establish a Secure IPSec Tunnel 63
Appendix D: Finding the MAC Address and IP Address for Your Ethernet Adapter 73
Windows 98 or Me Instructions 73
Windows 2000 or XP Instructions 74
Appendix E: Upgrading Firmware 75
Appendix F: Glossary 76
Appendix G: Specifications 82
Appendix H: Regulatory Information 84
Appendix I: Warranty Information 87
Appendix J: Contact Information 88

Wireless-G ADSL Gateway
List of Figures
Figure 2-1: Network 4
Figure 2-2: VPN Gateway-to-VPN Gateway 7
Figure 2-3: Computer-to-VPN Gateway 8
Figure 3-1: Back Panel 9
Figure 3-2: Front Panel 10
Figure 4-1: LAN Connection 12
Figure 4-2: ADSL Connection 12
Figure 4-3: Power Connection 12
Figure 5-1: Password Screen 16
Figure 5-2: Basic Setup Tab 16
Figure 5-3: Dynamic IP 17
Figure 5-4: Static IP 17
Figure 5-5: RFC 1483 Routed 18
Figure 5-6: RFC 2516 PPPoE 18
Figure 5-7: RFC 2364 PPoA 19
Figure 5-8: Bridged Mode Only 19
Figure 5-9: Optional Settings 20
Figure 5-10: DynDNS.org 21
Figure 5-11: Advanced Routing 22
Figure 5-12: Routing Table 23
Figure 5-13: 64-Bit WEP Encryption 24
Figure 5-14: 128-Bit WEP Encryption 24
Figure 5-15: Wireless Network Access 25
Figure 5-16: Networked Computers 25
Figure 5-17: Advanced Wireless Settings 26
Figure 5-18: Firewall 27
Figure 5-19: VPN 28
Figure 5-20: Manual Key Management 29
Figure 5-21: Advanced VPN Tunnel Setup 30
Figure 5-22: Access Restriction 32

Wireless-G ADSL Gateway
Figure 5-23: Internet Policy Summary 32
Figure 5-24: List of PCs 33
Figure 5-25: Port Services 33
Figure 5-26: Single Port Forwarding 34
Figure 5-27: Port Range Forwarding 35
Figure 5-28: Port Triggering 35
Figure 5-29: DMZ 36
Figure 5-30: Management 37
Figure 5-31: Reporting 39
Figure 5-32: Ping Test 40
Figure 5-33: Factory Defaults 40
Figure 5-34: Firmware Upgrade 41
Figure 5-35: Status 42
Figure 5-36: Local Network 43
Figure 5-37: DHCP Clients Table 43
Figure 5-38: Wireless 44
Figure 5-39: DSL Connection 45
Figure C-1: Password Screen 64
Figure C-2: Setup Tab 64
Figure C-3: IP Filter List Tab 64
Figure C-4: IP Filter List 65
Figure C-5: Filters Properties 65
Figure C-6: New Rule Properties 65
Figure C-7: IP Filter List 66
Figure C-8: Filters Properties 66
Figure C-9: New Rule Properties 66
Figure C-10: IP Filter List Tab 67
Figure C-11: Filter Action Tab 67
Figure C-12: Security Methods Tab 67
Figure C-13: Authentication Methods 68
Figure C-14: Preshared Key 68
Figure C-15: New Preshared Key 68
Figure C-16: Tunnel Setting Tab 69

Wireless-G ADSL Gateway
Figure C-17: Connection Type Tab 69
Figure C-18: Properties Screen 69
Figure C-19: IP Filter List Tab 70
Figure C-20: Filter Action Tab 70
Figure C-21: Authentication Methods Tab 70
Figure C-22: Preshared Key 71
Figure C-23: New Preshared Key 71
Figure C-24: Tunnel Setting Tab 71
Figure C-25: Connection Type 72
Figure C-26: Rules 72
Figure C-27: Local Computer 72
Figure D-1: IP Configuration Screen 74
Figure D-2: MAC Address/Adapter Address 74
Figure D-3: MAC Address/Physical Address 75
Figure E-1: Upgrade Firmware 77

1
Chapter 1: Introduction
Welcome
Wireless-G ADSL Gateway
Chapter 1: Introduction
Welcome
The Linksys Wireless-G ADSL Gateway is the all-in-one solution for Internet connectivity in your home. The ADSL
Modem function gives you a blazing fast connection to the Internet, far faster than a dial-up, and without tying up
your phone line.
Connect your computers to the Gateway via the built-in 4-port 10/100 Ethernet Switch to jump start your home
network. You can share files, printers, hard drive space and other resources, or play head-to-head computer
games. Attach four computers directly, or connect more hubs and switches to create as big a network as you
need. Thebuilt-in Wireless-G(802.11g)AccessPointallowsupto32wirelessdevicestoconnecttoyournetwork
at a blazing 54Mbps, without running cables through the house. It's also compatible with Wireless-B (802.11b)
devices, at 11Mbps. The Gateway ties it all together and lets your whole network share that high-speed Internet
connection.
To protect your data and privacy, the Wireless-G ADSL Gateway features an advanced firewall to keep Internet
intruders and attackers out. Wireless transmissions can be protected by powerful data encryption. Safeguard
your family with Parental Control features like Internet Access Time Limits and Key Word Blocking. Configuration
is a snap with any web browser.
With the Linksys Wireless-G ADSL Gateway at the heart of your home network, you're connected to the future.

2
Chapter 1: Introduction
What’s in this Guide?
Wireless-G ADSL Gateway
What’s in this Guide?
This user guide covers the steps for setting up and using the Wireless-G ADSL Gateway.
• Chapter 1: Introduction
This chapter describes the Wireless-G ADSL Gateway Wireless-G ADSL Gateway applications and this User
Guide.
• Chapter 2: Planning Your Network
This chapter describes the basics of networking.
• Chapter 3: Getting to Know the Wireless-G ADSL Gateway
This chapter describes the physical features of the Gateway.
• Chapter 4: Connecting the Wireless-G ADSL Gateway
This chapter instructs you on how to connect the Gateway to your network.
• Chapter 5: Configuring the Gateway
This chapter explains how to use the Web-Based Utility to configure the settings on the Gateway.
• Appendix A: Troubleshooting
This appendix describes some problems and solutions, as well as frequently asked questions, regarding
installation and use of the Wireless-G ADSL Gateway.
• Appendix B: Wireless Security
This appendix explains the risks of wireless networking and some solutions to reduce the risks.
• Appendix C: Configuring IPSec between a Windows 2000 Computer and the Gateway
This appendix instructs you on how to establish a secure IPSec tunnel using preshared keys to join a private
network inside the VPN Gateway and a Windows 2000 or XP computer.
• Appendix D: Upgrading Firmware
This appendix instructs you on how to upgrade the firmware on your Gateway if you should need to do so.
• Appendix E: Finding the MAC Address and IP Address for your Ethernet Adapter.
This appendix describes how to find the MAC address for your computer’s Ethernet adapter so you can use
the MAC filtering and/or MAC address cloning feature of the Gateway.
• Appendix F: Glossary
This appendix gives a brief glossary of terms frequently used in networking.

3
Chapter 1: Introduction
What’s in this Guide?
Wireless-G ADSL Gateway
• Appendix G: Specifications
This appendix provides the technical specifications for the Gateway.
• Appendix H: Warranty Information
This appendix supplies the warranty information for the Gateway.
• Appendix I: Regulatory Information
This appendix supplies the regulatory information regarding the Gateway.
• Appendix J: Contact Information
This appendix provides contact information for a variety of Linksys resources, including Technical Support.