Appendix C: Configuring Ipsec Between A Windows 2000 Or Xp Computer And The Gateway; Introduction; Environment - Linksys WAG54G User Manual

Wireless-G ADSL Gateway
Appendix C: 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

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
WAG54G
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

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

Introduction
NOTE: Keep a record of any changes you make.
Those changes will be identical in the Windows
"secpol" application and the Gateway's Web-
Based Utility.
62