10/100 8-Port VPN Router

Figure B-11: Filter Acton Tab

57

Figure B-12: Security Methods Tab

57

Figure B-13: Authentication Methods

58

Figure B-14: Preshared Key

58

Figure B-15: New Preshared Key

58

Figure B-16: Tunnel Setting Tab

59

Figure B-17: Connection Type Tab

59

Figure B-18: Properties Screen

59

Figure B-19: IP Filter List Tab

60

Figure B-20: Filter Action Tab

60

Figure B-21: Authentication Methods Tab

60

Figure B-22: Preshared Key

61

Figure B-23: New Preshared Key

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Figure B-24: Tunnel Setting Tab

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Figure B-25: Connection Type

62

Figure B-26: Rules

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Figure B-27: Local Computer

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Figure B-28: VPN Tab

63

Figure C-1: IP Configuration Screen

64

Figure C-2: MAC Address/Adapter Address

64

Figure C-3: MAC Address/Physical Address

65

Figure D-1: Upgrade Firmware

66

1

Chapter 1: Introduction

Welcome

ADSL2 Gateway with 4-Port Switch

Chapter 1: Introduction

Welcome

The Linksys ADSL2 Gateway with 4-Port Switch 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. The Gateway ties it all together and lets your whole network share that high-speed Internet connection.

To protect your data and privacy, the ADSL2 Gateway with 4-Port Switch features an advanced firewall to keep

Internet intruders and attackers out.

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 ADSL2 Gateway with 4-Port Switch at the heart of your home network, you're connected to the

future.

2

Chapter 1: Introduction

What’s in this Guide?

ADSL2 Gateway with 4-Port Switch

What’s in this Guide?

This user guide covers the steps for setting up and using the ADSL2 Gateway with 4-Port Switch.

•

Chapter 1: Introduction

This chapter describes the ADSL2 Gateway with 4-Port Switch ADSL2 Gateway with 4-Port Switch

applications and this User Guide.

•

Chapter 2: Planning Your Network

This chapter describes the basics of networking.

•

Chapter 3: Getting to Know the ADSL2 Gateway with 4-Port Switch

This chapter describes the physical features of the Gateway.

•

Chapter 4: Connecting the ADSL2 Gateway with 4-Port Switch

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 ADSL2 Gateway with 4-Port Switch.

•

Appendix B: 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 C: Upgrading Firmware

This appendix instructs you on how to upgrade the firmware on your Gateway if you should need to do so.

•

Appendix D: 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 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.

3

Chapter 1: Introduction

What’s in this Guide?

ADSL2 Gateway with 4-Port Switch

•

Appendix G: Warranty Information

This appendix supplies the warranty information for the 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.

4

Chapter 2: Planning Your Network

The Gateway’s Functions

ADSL2 Gateway with 4-Port Switch

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.

LAN

: the computers and networking products that

make up your local 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 Gateway.”

Figure 2-1: Network