Linksys AG041 manual Introduction, Environment

ADSL Gateway with 4-Port Switch

Appendix B: Configuring IPSec between a Windows 2000 or XP Computer and the Gateway

Introduction

This document demonstrates how to establish a secure IPSec tunnel using preshared keys to join a private network inside the Gateway and a Windows 2000 or XP computer. You can find detailed information on configuring the Windows 2000 server at the Microsoft website:

Microsoft KB Q252735 - How to Configure IPSec Tunneling in Windows 2000

http://support.microsoft.com/support/kb/articles/Q252/7/35.asp

Microsoft KB Q257225 - Basic IPSec Troubleshooting in Windows 2000

http://support.microsoft.com/support/kb/articles/Q257/2/25.asp

NOTE: Keep a record of any changes you make. Those changes will be identical in the Windows “secpol” application and the Router’s Web-Based Utility.

Environment

The IP addresses and other specifics mentioned in this appendix are for illustration purposes only.

Windows 2000 or Windows XP

IP Address: 140.111.1.2 <= User ISP provides IP Address; this is only an example.

Subnet Mask: 255.255.255.0

AG041

WAN IP Address: 140.111.1.1 <= User ISP provides IP Address; this is only an example.

Subnet Mask: 255.255.255.0

LAN IP Address: 192.168.1.1

Subnet Mask: 255.255.255.0

NOTE: This section’s instructions and figures refer to the Router. Substitute “Gateway” for “Router”. Also, the text on your screen may differ from the text in your instructions for “OK or Close”; click the appropriate button on your screen.

Appendix B: Configuring IPSec between a Windows 2000 or XP Computer and the Gateway 51

Introduction