LINKSYS WAG54GV3 User Manual

A Division of Cisco Systems, Inc.

2.4

Model No.

GHz

802.11g

WIRELESS

WAG54G

Wireless-G

ADSL Home Gateway

User Guide

Wireless-G ADSL Home Gateway

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 © 2006 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 Home Gateway has been designed to make understanding networking with the Gateway easier than ever. Look for the following items when reading this User Guide:

This checkmark means there is a Note of interest and is something you should pay special attention to while using the Gateway.

This exclamation point means there is a Caution or Warning and is something that could damage your property or the Gateway.

This question mark provides you with a reminder about something you might need to do while using the Gateway.

In addition to these symbols, there are definitions for technical terms that are presented like this:

word: definition.

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.

WAG54G-UG-60401A DS

Figure 0-1: Sample Figure Description

Wireless-G ADSL Home Gateway

Table of Contents

Chapter 1: Introduction 1

Welcome 1 What’s in this User Guide? 2

Chapter 2: Planning Your Network 4

The Gateway’s Functions 4 IP Addresses 4

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway 6

Ports and Reset Button on Side Panel 6 LEDs on Side Panel 7 The Top Panel 8 The Bottom Panel 9

Chapter 4: Connecting the Wireless-G ADSL Home Gateway 10

Overview 10 Wired Connection to a Computer 11 Wireless Connection to a Computer 12

Chapter 5: Configuring the Wireless-G ADSL Home Gateway 13

Overview 13 How to Access the Web-based Utility 15 The Setup Tab 15 The Wireless Tab 23 The Security Tab 28 The Access Restrictions Tab 30 The Applications and Gaming Tab 32 The Administration Tab 37 The Status Tab 43

Appendix A: Troubleshooting 47

Common Problems and Solutions 47 Frequently Asked Questions 55

Appendix B: Wireless Security 62

Security Precautions 62 Security Threats Facing Wireless Networks 62

Wireless-G ADSL Home Gateway

Appendix C: Finding the MAC Address and IP Address for Your Ethernet Adapter 65

Windows 98 or Me Instructions 65 Windows 2000 or XP Instructions 66

Appendix D: Upgrading Firmware 67 Appendix E: Glossary 68 Appendix F: Regulatory Information 75 Appendix G: Warranty Information 81 Appendix H: Specifications 82 Appendix I: Contact Information 84

Wireless-G ADSL Home Gateway

List of Figures

Figure 2-1: Network 4 Figure 3-1: Ports and Reset Button on Side Panel 6 Figure 3-2: LEDs on Side Panel 7 Figure 3-3: Top Panel 8 Figure 3-4: Top Panel with Optional Antenna 8 Figure 3-5: Bottom Panel with Stand in Closed Position 9 Figure 3-6: Gateway Using Stand 9 Figure 4-1: Connect the ADSL Line 11 Figure 4-2: Connect a PC 11 Figure 4-3: Connect the Power 11 Figure 4-4: Connect the ADSL Line 12 Figure 4-5: Connect the Power 12 Figure 5-1: Login Screen 15 Figure 5-2: Basic Setup 15 Figure 5-3: RFC 1483 Bridged - Dynamic IP 16 Figure 5-4: RFC 1483 Bridged - Static IP 16 Figure 5-5: RFC 1483 Routed 17 Figure 5-6: RFC 2516 PPPoE 17 Figure 5-7: RFC 2364 PPPoA 18 Figure 5-8: Bridged Mode Only 18 Figure 5-9: Optional Settings 19 Figure 5-10: DynDNS.org 20 Figure 5-11: TZO.com 20 Figure 5-12: Advanced Routing 21 Figure 5-13: Routing Table 22 Figure 5-14: Basic Wireless Settings 23 Figure 5-15: WPA Pre-Shared Key 24 Figure 5-16: WEP 25 Figure 5-17: Wireless Network Access 26 Figure 5-18: MAC Address Filter List 26 Figure 5-19: Wireless Client MAC List 26 Figure 5-20: Advanced Wireless Settings 27

Wireless-G ADSL Home Gateway

Figure 5-21: Security 28 Figure 5-22: Firewall Log 29 Figure 5-23: Internet Access 30 Figure 5-24: Internet Policy Summary 30 Figure 5-25: List of PCs 31 Figure 5-26: Add/Edit Service 31 Figure 5-27: Single Port Forwarding 32 Figure 5-28: Port Range Forwarding 33 Figure 5-29: Port Triggering 34 Figure 5-30: DMZ 35 Figure 5-31: QoS 36 Figure 5-32: Management 37 Figure 5-33: Allowed IP - IP Range 37 Figure 5-34: Reporting 39 Figure 5-35: System Log 39 Figure 5-36: Ping Test 40 Figure 5-37: Backup&Restore 40 Figure 5-38: Factory Defaults 41 Figure 5-39: Firmware Upgrade 41 Figure 5-40: Reboot 42 Figure 5-41: Gateway 43 Figure 5-42: Local Network 44 Figure 5-43: DHCP Active IP Table 44 Figure 5-44: ARP/RARP Table 44 Figure 5-45: Wireless 45 Figure 5-46: Networked Computers 45 Figure 5-47: DSL Connection 46 Figure C-1: IP Configuration Screen 65 Figure C-2: MAC Address/Adapter Address 65 Figure C-3: MAC Address/Physical Address 66 Figure D-1: Firmware Upgrade 67

Wireless-G ADSL Home Gateway

Chapter 1: Introduction

Welcome

Thank you for choosing the Wireless-G ADSL Home Gateway. This Gateway will provide your computers with a high-speed Internet connection as well as resources, including files and printers. Since the Gateway is wireless, Internet access can be shared over the wired network as well as the wireless broadcast at up to 11Mbps for Wireless-B or up to 54Mbps for Wireless-G.

How does the Gateway do all of this? By connecting the Internet, as well as your computers and peripherals, to the Gateway, then the Gateway can direct and control communications for your network.

To protect your data and privacy, the Gateway features an advanced firewall to keep out Internet intruders. Wireless transmissions can be protected by powerful data encryption. In addition, you can safeguard your family with parental control features such as Internet access restrictions and keyword blocking. You can configure the Gateway’s settings through the easy-to-use, browser-based utility.

But what does all of this mean?

Networks are useful tools for sharing Internet access and computer resources. You can access one printer from different computers and access data located on another computer’s hard drive. Networks are even used for playing multiplayer video games. So, networks not only are useful in homes and offices, but also can be fun.

PCs on a wired network create a LAN, or Local Area Network. They are connected with Ethernet cables, which is why the network is called “wired.” PCs equipped with wireless cards or adapters can communicate without cumbersome cables. By sharing the same wireless settings, within their transmission radius, they form a wireless network. This is sometimes called a WLAN, or Wireless Local Area Network. Since the Gateway has wireless capabilities, it can bridge your wired and wireless networks, letting them communicate with each other.

With your networks all connected, wired, wireless, and the Internet, you can now share files and Internet access—and even play games. All the while, the Wireless-G ADSL Home Gateway protects your networks from unauthorized and unwelcome users.

Linksys recommends using the Setup CD-ROM for first-time installation of the Gateway. If you do not wish to run the Setup Wizard on the Setup CD-ROM, then use the instructions in this Guide to help you connect the Gateway, set it up, and configure it to bridge your different networks. These instructions should be all you need to get the most out of the Wireless-G ADSL Home Gateway.

wpa (wi-fi protected access): a wireless security protocol using TKIP (Temporal Key Integrity Protocol) encryption, which can be used in conjunction with a RADIUS server.

spi (stateful packet inspection) firewall: a technology that inspects incoming packets of information before allowing them to enter the network.

firewall: Security measures that protect the resources of a local network from intruders.

nat (network address translation): NAT technology translates IP addresses of a local area network to a different IP address for the Internet.

network: a series of computers or devices connected for the purpose of data sharing, storage, and/or transmission between users

lan (local area network): The computers and networking products that make up the network in your home or office.

Chapter 1: Introduction Welcome

Wireless-G ADSL Home Gateway

What’s in this User Guide?

This user guide covers the steps for setting up and using the Wireless-G ADSL Home Gateway.

• Chapter 1: Introduction This chapter describes applications of the Wireless-G ADSL Home Gateway 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 Home Gateway This chapter describes the physical features of the Gateway.

• Chapter 4: Connecting the Wireless-G ADSL Home Gateway This chapter instructs you on how to connect the Gateway to your network.

• Chapter 5: Configuring the Wireless-G ADSL Home 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 Home Gateway.

• Appendix B: Wireless Security This appendix explains the risks of wireless networking and some solutions to reduce the risks.

• Appendix C: 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 D: Upgrading Firmware This appendix instructs you on how to upgrade the firmware on the Gateway if you should need to do so.

• Appendix E: Glossary This appendix gives a brief glossary of terms frequently used in networking.

• Appendix F: Specifications This appendix provides the technical specifications for the Gateway.

• Appendix G: Warranty Information This appendix supplies the warranty information for the Gateway.

Chapter 1: Introduction What’s in this User Guide?

Wireless-G ADSL Home Gateway

• Appendix H: Regulatory Information This appendix supplies the regulatory information regarding the Gateway.

• Appendix I: Contact Information This appendix provides contact information for a variety of Linksys resources, including Technical Support.

Chapter 1: Introduction What’s in this User Guide?

Wireless-G ADSL Home Gateway

Chapter 2: Planning Your Network

The Gateway’s Functions

A Gateway is a network device that connects two networks together.

In this instance, the Gateway connects your Local Area Network (LAN), or the group of computers in your home or office, to the Internet. The Gateway processes and regulates the data that travels between these two networks.

The Gateway’s NAT feature protects your network of computers so users on the public, Internet side cannot “see” your computers. This is how your network remains private. The Gateway protects your network by inspecting every packet coming in through the Internet port before delivery to the appropriate computer on your network. The Gateway inspects Internet port services like the web server, ftp server, or other Internet applications, and, if allowed, it will forward the packet to the appropriate computer on the LAN side.

Remember that the Gateway’s ports connect to two sides. The LAN ports connect to the LAN, and the ADSL port connects to the Internet. The LAN ports transmit data at 10/100Mbps.

IP Addresses

What’s an IP Address?

IP stands for Internet Protocol. Every device on an IP-based network, including computers, print servers, and Gateways, requires an IP address to identify its “location,” or address, on the network. This applies to both the Internet and LAN connections. There are two ways of assigning an IP address to your network devices. You can assign static IP addresses or use the Gateway to assign IP addresses dynamically.

Static IP Addresses

A static IP address is a fixed IP address that you assign manually to a computer or other device on the network. Since a static IP address remains valid until you disable it, static IP addressing ensures that the device assigned it will always have that same IP address until you change it. Static IP addresses must be unique and are commonly used with network devices such as server computers or print servers.

Chapter 2: Planning Your Network The Gateway’s Functions

Figure 2-1: Network

ip (internet protocol): a protocol used to send data over a network

NOTE: Since the Gateway is a device that connects two networks, it needs two IP addresses—one for the LAN, and one for the Internet. In this User Guide, you’ll see references to the “Internet IP address” and the “LAN IP address.”

Since the Gateway uses NAT technology, the only IP address that can be seen from the Internet for your network is the Gateway’s Internet IP address. However, even this Internet IP address can be blocked, so that the Gateway and network seem invisible to the Internet—see the Block WAN Requests description under Security in “Chapter 5: Configuring the Wireless-G ADSL Home Gateway.”

Wireless-G ADSL Home Gateway

Since you use the Gateway to share your DSL Internet connection, contact your ISP to find out if they have assigned a static IP address to your account. If so, you will need that static IP address when configuring the Gateway. You can get that information from your ISP.

Dynamic IP Addresses

A dynamic IP address is automatically assigned to a device on the network, such as computers and print servers. These IP addresses are called “dynamic” because they are only temporarily assigned to the computer or device. After a certain time period, they expire and may change. If a computer logs onto the network (or the Internet) and its dynamic IP address has expired, the DHCP server will automatically assign it a new dynamic IP address.

DHCP (Dynamic Host Configuration Protocol) Servers

Computers and other network devices using dynamic IP addressing are assigned a new IP address by a DHCP server. The computer or network device obtaining an IP address is called the DHCP client. DHCP frees you from having to assign IP addresses manually every time a new user is added to your network.

A DHCP server can either be a designated computer on the network or another network device, such as the Gateway. By default, the Gateway’s DHCP Server function is enabled.

If you already have a DHCP server running on your network, you must disable one of the two DHCP servers. If you run more than one DHCP server on your network, you will experience network errors, such as conflicting IP addresses. To disable DHCP on the Gateway, see the DHCP section in “Chapter 5: Configuring the Wireless-G ADSL Home Gateway.”

What is a VPN?

A VPN, or Virtual Private Network, is a connection between two endpoints — a VPN Gateway, for instance — in different networks that allows private data to be sent securely over a shared or public network such as the Internet. This establishes a private network that can send data securely between these two locations or networks.

This is done by creating a “tunnel.” A VPN tunnel connects the two computers or networks and allows data to be transmitted over the Internet as if it were still within those networks. Not a literal tunnel, it is a connection secured by encrypting the data sent between the two networks.

VPNs were created as a cost-effective alternative to using a private, dedicated, leased line for a private network. Using industry-standard encryption and authentication techniques — IPSec, short for IP Security — the VPN creates a secure connection that, in effect, operates as if you were directly connected to your local network. Virtual Private Networking can be used to create secure networks linking a central office with branch offices,

Chapter 2: Planning Your Network What is a VPN?

Wireless-G ADSL Home Gateway

telecommuters, and/or professionals on the road (travelers can connect to a VPN Gateway using any computer with VPN client software that supports IPSec, such as SSH Sentinel.)

There are two basic ways to create a VPN connection:

• VPN Gateway to VPN Gateway

• Computer (using VPN client software that supports IPSec) to VPN Gateway

The VPN Gateway creates a “tunnel” or channel between two endpoints, so that data transmissions between them are secure. A computer with VPN client software that supports IPSec can be one of the two endpoints. Any computer with the built-in IPSec Security Manager (Microsoft 2000 and XP) allows the VPN Gateway to create a VPN tunnel using IPSec. Other versions of Microsoft operating systems require additional, third-party VPN client software applications that support IPSec to be installed.

Computer (using VPN client software that supports IPSec) to VPN Gateway

The following is an example of a computer-to-VPN Gateway VPN: In her hotel room, a traveling businesswoman dials up her ISP. Her notebook computer has VPN client software that is configured with her office's VPN settings. She accesses the VPN client software that supports IPSec and connects to the VPN Gateway at the central office. As VPNs utilize the Internet, distance is not a factor. Using the VPN, the businesswoman now has a secure connection to the central office's network, as if she were physically connected.

VPN Gateway to VPN Gateway

An example of a VPN Gateway-to-VPN Gateway VPN would be as follows: At home, a telecommuter uses his VPN Gateway for his always-on Internet connection. His Gateway is configured with his office's VPN settings. When he connects to his office's Gateway, the two Gateways create a VPN tunnel, encrypting and decrypting data. As VPNs utilize the Internet, distance is not a factor. Using the VPN, the telecommuter now has a secure connection to the central office's network, as if he were physically connected.

For additional information and instructions about creating your own VPN, please visit Linksys's international Web site at http://www.linksys.com/international/.

Why do I need a VPN?

Computer networking provides a flexibility not available when using a paper-based system. With this flexibility, however, comes an increased risk in security. This is why firewalls were first introduced. Firewalls help to protect data inside of a local network. But what do you do once information is sent outside of your local network, when

Chapter 2: Planning Your Network Why do I need a VPN?

Wireless-G ADSL Home Gateway

e-mails are sent to their destination, or when you have to connect to your company's network when you are out on the road? How is your data protected?

That is when a VPN can help. VPNs secure data moving outside of your network as if it were still within that network.

When data is sent out across the Internet from your computer, it is always open to attacks. You may already have a firewall, which will help protect data moving around or held within your network from being corrupted or intercepted by entities outside of your network, but once data moves outside of your network — when you send data to someone via email or communicate with an individual over the Internet — the firewall will no longer protect that data.

At this point, your data becomes open to hackers using a variety of methods to steal not only the data you are transmitting but also your network login and security data. Some of the most common methods are as follows:

1) MAC Address Spoofing

Packets transmitted over a network, either your local network or the Internet, are preceded by a packet header. These packet headers contain both the source and destination information for that packet to transmit efficiently. A hacker can use this information to spoof (or fake) a MAC address allowed on the network. With this spoofed MAC address, the hacker can also intercept information meant for another user.

2) Data Sniffing

Data “sniffing” is a method used by hackers to obtain network data as it travels through unsecured networks, such as the Internet. Tools for just this kind of activity, such as protocol analyzers and network diagnostic tools, are often built into operating systems and allow the data to be viewed in clear text.

3) Man in the Middle Attacks

Once the hacker has either sniffed or spoofed enough information, he can perform a “man in the middle” attack. This attack is performed, when data is being transmitted from one network to another, by rerouting the data to a new destination. Even though the data is not received by its intended recipient, it appears that way to the person sending the data.

These are only a few of the methods hackers use and they are always developing more. Without the security of your VPN, your data is constantly open to such attacks as it travels over the Internet. Data travelling over the Internet will often pass through many different servers around the world before reaching its final destination. That's a long way to go for unsecured data and this is when a VPN serves its purpose.

Chapter 2: Planning Your Network Why do I need a VPN?

Wireless-G ADSL Home Gateway

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway

Ports and Reset Button on Side Panel

The Gateway’s ports and Reset button are located on a side panel.

Figure 3-1: Ports and Reset Button on Side Panel

Line The Line port connects to the ADSL line.

Ethernet (1-4) The Ethernet ports connect to your computers and other network devices.

Reset Button There are two ways to reset the Gateway's factory defaults. Either press the Reset Button, for

approximately ten seconds, or restore the defaults from the Factory Defaults screen of the Administration tab in the Gateway’s Web-based Utility.

Power The Power port is where you will connect the power adapter.

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway Ports and Reset Button on Side Panel

IMPORTANT: Resetting the Gateway to factory defaults will erase all of your settings (including Internet connection, wireless, and other settings) and replace them with the factory defaults. Do not reset the Gateway if you want to retain these settings.

Wireless-G ADSL Home Gateway

LEDs and Power Button on Side Panel

The Gateway's LEDs, which indicate network activity, are located on the other side panel. The Gateway’s power button is also located on this panel.

Figure 3-2: Power Button and LEDs on Side Panel

Press the power button to turn the Gateway on or off when power is available from the power adapter.

The Gateway’s LEDs are described below.

POWER Green. The POWER LED lights up when the Gateway is powered on.

WIRELESS Green. The WIRELESS LED lights up whenever there is a successful wireless connection. If the

LED is flashing, the Gateway is actively sending or receiving data to or from one of the devices on the network.

ETHERNET (1-4) Green. The ETHERNET LED serves two purposes. If the LED is continuously lit, the Gateway is

successfully connected to a device through the LAN port. If the LED is flashing, it is an indication of any network activity.

DSL Green. The DSL LED lights up whenever there is a successful DSL connection. The LED blinks

while the Gateway is establishing the ADSL connection.

INTERNET Green/Red. The INTERNET LED lights up green when a connection to your Internet Service

Provider (ISP) is established, and blinks when information is passing through the connection. If the connection is in bridge-only mode, however, the INTERNET LED does not light up. The INTERNET LED lights up red when the connection to the ISP fails.

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway LEDs and Power Button on Side Panel

Wireless-G ADSL Home Gateway

The Top Panel

The Gateway comes with a detachable external antenna. The SMA-type connector for the antenna is located on the top panel. To attach the antenna, slip its lower end onto the SMA connector and turn its knurled base clockwise until it is firmly seated. The antenna can swivel on its base and has a hinge with stops for orientation at four different angles.

Antenna

Antenna Base

SMA Port

Figure 3-3: Top Panel

Figure 3-4: Top Panel with Antenna

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway The Top Panel

Wireless-G ADSL Home Gateway

The Bottom Panel

The Gateway has a built-in stand available. If you place the Gateway flat on a surface, then you can leave the stand in the closed position. However, if you want the Gateway to be upright, swivel the stand clockwise 90º and position the Gateway accordingly.

Figure 3-5: Bottom Panel with Stand in

Closed Position

Chapter 3: Getting to Know the Wireless-G ADSL Home Gateway The Bottom Panel

Figure 3-6: Gateway Using Stand

Wireless-G ADSL Home Gateway

Chapter 4: Connecting the Wireless-G ADSL Home Gateway

Overview

The installation technician from your ISP should have left the setup information for the modem with you after installing your broadband connection. If not, you can call your ISP to request that data.

After you have the setup information you need for your specific type of Internet connection, you can begin installation and setup of the Gateway.

If you want to use a computer with an Ethernet adapter to configure the Gateway, continue to “Wired Connection to a Computer.” If you want to use a computer with a wireless adapter to configure the Gateway, continue to “Wireless Connection to a Computer.”

Chapter 4: Connecting the Wireless-G ADSL Home Gateway Overview

Wireless-G ADSL Home Gateway

Wired Connection to a Computer

1. Make sure that all of your network’s hardware is powered off, including the Gateway and all computers.

2. Connect a phone cable from the Line port on the Gateway’s side panel to the wall jack of the ADSL line. A small device called a microfilter (not included) may be necessary between each phone and wall jack to prevent interference. Contact your ISP if you have any questions.

NOTE:

A small device called a microfilter (not included) may be necessary between each phone

and wall jack to prevent interference. Contact your ISP if you have any questions.

IMPORTANT: For countries that have phone jacks with RJ-11 connectors, make sure to only place the microfilters between the phone and the wall jack and not between the Gateway and the wall jack or your ADSL will not connect.

For countries that do not have phone jacks with RJ-11 connectors (e.g. France, Sweden, Switzerland, United Kingdom, etc.), except for ISDN users, the microfilter has to be used between the Gateway and the wall jack, because the microfilter will have the RJ-11 connector.

Annex B users (E1 and DE versions of the Gateway) must use the included special cable to connect the Gateway to the wall jack (RJ-45 to RJ-12). If you require splitters or special jacks, please contact your service provider.

Figure 4-1: Connect the ADSL Line

3. Connect one end of an Ethernet network cable to one of the Ethernet ports (labeled 1-4) on the back of the Gateway, and the other end to an Ethernet port on a computer. Repeat this step to connect more computers, a switch, or other network devices to the Gateway.

4. Connect the power adapter to the Gateway’s Power port, plug the power adapter into a power outlet, and press the Gateway’s power button.

NOTE: You should always plug the Gateway’s power adapter into a power strip with surge protection.

The Power LED on the front panel will light up red as soon as the Gateway is turned on. The Power LED will next flash green for a few seconds, and then it will be solidly lit when the self-test is complete. If the LED flashes for one minute or longer, see “Appendix A: Troubleshooting.”

5. Power on one of your computers that is connected to the Gateway.

Go to “Chapter 5: Configuring the Wireless-G ADSL Home Gateway.”

Chapter 4: Connecting the Wireless-G ADSL Home Gateway Wired Connection to a Computer

Figure 4-2: Connect a PC

Figure 4-3: Connect the Power

Wireless-G ADSL Home Gateway

Wireless Connection to a Computer

If you want to use a wireless connection to access the Gateway, follow these instructions:

1. Make sure that all of your network’s hardware is powered off, including the Gateway and all computers.

2. Connect a phone cable from the Line port on the Gateway’s back panel to the wall jack of the ADSL line. A small device called a microfilter (not included) may be necessary between each phone and wall jack to prevent interference. Contact your ISP if you have any questions.

NOTE:

A small device called a microfilter (not included) may be necessary between each phone

and wall jack to prevent interference. Contact your ISP if you have any questions.

IMPORTANT: For countries that have phone jacks with RJ-11 connectors, make sure you only place the microfilters between the phone and the wall jack and not between the Gateway and the wall jack or your ADSL will not connect.

3. Connect the power adapter to the Power port, plug the power adapter into a power outlet, and press the Gateway’s power button.

4. Power on one of the computers on your wireless network(s).

5. For initial access to the Gateway through a wireless connection, make sure the computer’s wireless adapter has its SSID set to linksys (the Gateway’s default setting), and its wireless security is disabled. After you have accessed the Gateway, you can change the Gateway and this computer’s adapter settings to match your usual network settings.

Go to “Chapter 5: Configuring the Wireless-G ADSL Home Gateway.”

Figure 4-4: Connect the ADSL Line

Figure 4-5: Connect the Power

NOTE: You should always change the SSID from its default, linksys, and enable wireless security.

Chapter 4: Connecting the Wireless-G ADSL Home Gateway Wireless Connection to a Computer

Wireless-G ADSL Home Gateway

Chapter 5: Configuring the Wireless-G ADSL Home Gateway

Overview

Follow the steps in this chapter and use the Gateway’s Web-based utility to configure the Gateway. This chapter will describe each web page in the Utility and each page’s key functions. The utility can be accessed via your Web browser through use of a computer connected to the Gateway. For a basic network setup, most users only have to use the following screens of the Utility:

• Basic Setup. On the Basic Setup screen, enter the settings provided by your ISP.

• Management. Click the Administration tab and then the Management tab. The Gateway’s default username and password is admin. To secure the Gateway, change the Password from its default.

There are seven main tabs: Setup, Wireless, Security, Access Restriction, Applications & Gaming, Administration, and Status. Additional tabs will be available after you click one of the main tabs.

Setup

• Basic Setup. Enter the Internet connection and network settings on this screen.

• DDNS. Use this screen to enable and configure the Dynamic Domain Name System (DDNS) feature.

• Advanced Routing. On this screen, you can alter NAT and routing configurations.

Wireless

• Basic Wireless Settings. You can choose your wireless network settings on this screen.

• Wireless Security. Configure your wireless security settings on this screen.

HAVE YOU: Enabled TCP/IP on your computers? Computers communicate over the network with this protocol. Refer to Windows Help for more information on TCP/IP.

NOTE: For added security, you should change the password through the Administration tab.

• Wireless Access. This screen lets you control access to your wireless network.

• Advanced Wireless Settings. On this screen you can access the advanced wireless network settings.

Security

• Firewall. Use this screen to disable or enable the firewall, set up filters, and block WAN requests.

• VPN. On this screen you can control VPN passthrough and set up IPSec VPN tunnels.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway Overview

Wireless-G ADSL Home Gateway

Access Restriction

• Internet Access. This screen allows you to control the Internet usage and traffic on your local network.

Applications & Gaming

• Single Port Forwarding. Use this screen to set up common services or applications that require forwarding on a single port.

• Port Range Forwarding. To set up public services or other specialized Internet applications that require forwarding on a range of ports, use this screen.

• Port Triggering. To set up triggered ranges and forwarded ranges for Internet applications, click this tab.

• DMZ. To allow one local computer to be exposed to the Internet for use of special-purpose services, use this screen.

• QoS. Use Quality of Service (QoS) to assign different priority levels to different types of data transmissions.

Administration

• Management. On this screen, alter Gateway access, Simple Network Management Protocol (SNMP), Universal Plug and Play (UPnP), IGMP-Proxy (IGMP stands for Internet Group Multicast Protocol), and wireless management settings.

vpn (virtual private network): a security measure to protect data as it leaves one network and goes to another over the Internet.

• Reporting. If you want to view or save activity logs, click this tab.

• Diagnostics. Use this screen to run a Ping test.

• Backup&Restore. On this screen, you can back up or restore the Gateway’s configuration.

• Factory Defaults. If you want to restore the Gateway’s factory default settings, use this screen.

• Firmware Upgrade. Click this tab if you want to upgrade the Gateway’s firmware.

• Reboot. If you need to do a hard or soft reboot of the Gateway, use this screen.

Status

• Gateway. This screen provides status information about the Gateway.

• Local Network. This provides status information about the local network.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway Overview

Wireless-G ADSL Home Gateway

• Wireless. This screen provides status information about the wireless network.

• DSL Connection. This screen provides status information about the DSL connection.

How to Access the Web-based Utility

To access the web-based utility, launch Internet Explorer or Netscape Navigator, and enter the Gateway’s default IP address, 192.168.1.1, in the Address field. Then press Enter.

A login screen will appear (Windows XP users will see a similar screen). Enter admin (the default user name) in the User Name field, and enter admin (the default password) in the Password field. Then click the OK button.

The Setup Tab

The Basic Setup Tab

The first screen that appears is the Basic Setup tab. This tab allows you to change the Gateway's general settings. Change these settings as described here and click the Save Settings button to save your changes, or click the Cancel Changes button to cancel your changes.

Internet Setup

• PVC Connection. If your ADSL account provides more than one permanent virtual circuit (PVC), you can have multiple, simultaneous, independent WAN connections. PVC 1 is selected and enabled by default. When you are ready to configure another PVC, select its number here and click the Enable Now box to enable it.

Figure 5-1: Login Screen

• Internet Connection Type. The Gateway supports six Encapsulation methods: RFC 1483 Bridged, RFC 1483 Routed, IPoA, RFC 2516 PPPoE, RFC 2364 PPPoA, and Bridged Mode Only. Select the appropriate type of encapsulation from the drop-down menu. Each Basic Setup screen and available features will differ depending on what type of encapsulation you select.

• VC Settings. You will configure your Virtual Circuit (VC) settings in this section.

• Multiplexing: Select LLC or VC, depending on your ISP.

• QoS Type: Select from the drop-down menu: UBR (Unspecific Bit Rate) for applications that are non-time-

sensitive, such as e-mail; CBR (Continuous Bit Rate) to specify fixed bandwidth for voice or data traffic; or VBR (Variable Bit Rate) for bursty traffic and bandwidth-sharing with other applications.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway How to Access the Web-based Utility

Figure 5-2: Basic Setup

Wireless-G ADSL Home Gateway

• Pcr Rate: For the Peak Cell Rate, divide the DSL line rate by 424 to get the maximum rate the sender can

send cells. Enter the rate in the field (if required by your service provider).

• Scr Rate: The Sustain Cell Rate sets the average cell rate that can be transmitted. The SCR value is

normally less than the PCR value. Enter the rate in the field (if required by your service provider).

• Autodetect: Select Enable to have the settings automatically entered, or select Disable to enter the

values manually.

• Virtual Circuit: These fields consist of two items: VPI (Virtual Path Identifier) and VCI (Virtual Channel

Identifier). Your ISP will provide the correct settings to use here for each of your PVCs.

• DSL Modulation: Your ISP can tell you if you should leave this control set to MultiMode or set it to T1.413,

G.dmt, G.lite, ADSL2, or ADSL2+.

• IP Settings. Follow the instructions in the section for your type of encapsulation.

RFC 1483 Bridged

Dynamic IP

IP Settings. Select Obtain an IP Address Automatically if your ISP says you are connecting through a dynamic IP address. If your ISP says you should enable PPPoE Session, enable it and configure the following settings:

• Service Name. If a service name is required, enter the name of your PPPoE service in this field.

• User Name and Password. Enter the User Name and Password provided by your ISP.

• Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection

after it has been inactive for a specified period of time (Max Idle Time). If your Internet connection has been terminated due to inactivity, Connect on Demand enables the Gateway to automatically re-establish your connection as soon as you attempt to access the Internet again. To use this option, click the Connect on Demand radio button. In the Max Idle Time field, enter the number of minutes you want to have elapsed before your Internet connection terminates.

• Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet

connection. If you are disconnected, then the Gateway will automatically re-establish your connection. To use this option, click the Keep Alive radio button. In the Redial Period field, specify how often you want the Gateway to check the Internet connection. The default Redial Period is 20 seconds.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Setup Tab

Figure 5-3: RFC 1483 Bridged - Dynamic IP

Wireless-G ADSL Home Gateway

Static IP

If you are required to use a permanent (static) IP address to connect to the Internet, then select Use the following IP Address.

• Internet IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP

will provide you with the IP Address you need to specify here.

• Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask.

• Gateway. Your ISP will provide you with the default Gateway Address, which is the ISP server’s IP address.

• Primary DNS (Required) and Secondary DNS (Optional). Your ISP will provide you with at least one DNS

(Domain Name System) Server IP Address.

• PPPoE Session. Enable this function if it is required by your ISP. PPPoE settings will appear. See “RFC 2516

PPPoE” on the next page for explanations of these settings.

RFC 1483 Routed

If you are required to use RFC 1483 Routed, then select RFC 1483 Routed.

• Internet IP Address. This is the Gateway’s IP address, when seen from the WAN, or the Internet. Your ISP

will provide you with the IP Address you need to specify here.

Figure 5-4: RFC 1483 Bridged - Static IP

• Subnet Mask. This is the Gateway’s Subnet Mask. Your ISP will provide you with the Subnet Mask.

• Gateway. Your ISP will provide you with the default Gateway Address, which is the ISP server’s IP address.

• Primary DNS (Required) and Secondary DNS (Optional). Your ISP will provide you with at least one DNS

(Domain Name System) Server IP Address.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Setup Tab

Figure 5-5: RFC 1483 Routed

Wireless-G ADSL Home Gateway

IPoA

If you are required to use Internet Protocol over Asynchronous Transfer Mode, select IPoA. The related settings are the same as for RFC 1483 Routed (see above).

RFC 2516 PPPoE

Some DSL-based ISPs use PPPoE (Point-to-Point Protocol over Ethernet) to establish Internet connections. Check with your ISP to see if they use PPPoE. If they do, you will have to enable PPPoE.

• Service Name. If a service name is required, enter the name of your PPPoE service in this field.

• User Name and Password. Enter the User Name and Password provided by your ISP.

• Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection

• Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet

Figure 5-6: IPoA

• Second PPPoE. If your DSL account allows multiple simultaneous PPPoE streams, enable this option and

enter the required information.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Setup Tab

Figure 5-7: RFC 2516 PPPoE

Wireless-G ADSL Home Gateway

RFC 2364 PPPoA

Some DSL-based ISPs use PPPoA (Point-to-Point Protocol over ATM) to establish Internet connections. If you are connected to the Internet through a DSL line, check with your ISP to see if they use PPPoA. If they do, you will have to enable PPPoA.

• User Name and Password. Enter the User Name and Password provided by your ISP.

• Connect on Demand: Max Idle Time. You can configure the Gateway to disconnect the Internet connection

• Keep Alive: Redial Period. If you select this option, the Gateway will periodically check your Internet

Bridged Mode Only

If you are using your Gateway as a bridge, which makes the Gateway act like a stand-alone modem, select

Bridged Mode Only. All NAT and routing settings are disabled in this mode.

Figure 5-8: RFC 2364 PPPoA

Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Setup Tab

Figure 5-9: Bridged Mode Only

Wireless-G ADSL Home Gateway

Optional Settings (required by some ISPs)

• Host Name and Domain Name. These fields allow you to supply a host and domain name for the Gateway. Some ISPs require these names as identification. You may have to check with your ISP to see if your broadband Internet service has been configured with a host and domain name. In most cases, you can leave these fields blank.

• MTU and Size. The MTU (Maximum Transmission Unit) setting specifies the largest packet size permitted for network transmission. Select Manual and enter the value desired in the Size field. It is recommended that you leave this value in the 1200 to 1500 range. By default, MTU is configured automatically.

Network Setup

• Router IP. The values for the Gateway’s Local IP Address and Subnet Mask are shown here. In most cases, keeping the default values will work.

• Local IP Address. The default value is 192.168.1.1.

• Subnet Mask. The default value is 255.255.255.0.

• Network Address Server Settings (DHCP). Configure the Gateway’s Dynamic Host Configuration Protocol (DHCP) settings in this section.

• Local DHCP Server. A Dynamic Host Configuration Protocol (DHCP) server automatically assigns an IP

address to each computer on your network for you. Unless you already have one, it is highly recommended that you leave the Gateway enabled as a DHCP server. You can also use the Gateway in DHCP Relay mode.

• DHCP Relay Server. If you enable the DHCP Relay mode for the Local DHCP Server setting, enter the IP

address for the DHCP server in the fields provided.

• Advanced. To have the DHCP server reserve certain IP addresses for certain machines, click Advanced,

enter each machine’s MAC address or host name along with the desired IP address, and enable the entry.

• Starting IP Address. Enter a value for the DHCP server to start with when issuing IP addresses. This value

must be 192.168.1. 2 or greater, because the default IP address for the Gateway is 192.168.1.1.

• Maximum Number of DHCP Users. Enter the maximum number of users/clients that can obtain an IP

address. The number will vary depending on the starting IP address entered.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Setup Tab

Figure 5-10: Optional Settings

Figure 5-11: Advanced DHCP

Wireless-G ADSL Home Gateway

• Client Lease Time. The Client Lease Time is the amount of time a computer will be allowed connection to

the Gateway with its current dynamic IP address. Enter the amount of time, in minutes, that the computer will be “leased” this dynamic IP address.

• Static DNS 1-3. The Domain Name System (DNS) is how the Internet translates domain or website names

into Internet addresses or URLs. Your ISP will provide you with at least one DNS Server IP Address. You can enter up to three DNS Server IP Addresses here. The Gateway will use these for quicker access to functioning DNS servers.

• WINS. The Windows Internet Naming Service (WINS) converts NetBIOS names to IP addresses. If you use a

WINS server, enter that server’s IP address here. Otherwise, leave this field blank.

• Time Setting. Select the appropriate time zone. You can change the interval between Network Time Protocol (NTP) requests (normally 3600 seconds). If desired, check the Automatically adjust clock for daylight saving changes checkbox. To use a specific NTP server, select Manual and enter the server address.

When finished making your changes on this tab, click the Save Settings button to save these changes, or click the Cancel Changes button to undo your changes.

Chapter 5: Configuring the Wireless-G ADSL Home Gateway The Setup Tab

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