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Page 6 / 80 Scroll up to view Page 1 - 5
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
61
Figure B-24: Tunnel Setting Tab
61
Figure B-25: Connection Type
62
Figure B-26: Rules
62
Figure B-27: Local Computer
62
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
Page 7 / 80
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.
Page 8 / 80
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.
Page 9 / 80
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.
Page 10 / 80
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

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