Appendix C: Configuring Ipsec Between A Microsoft Windows 2000 Or Xp Pc And A Linksys Cable/Dsl Vpn Router; Introduction; Environment; Step-By-Step - Linksys BEFVP41 User Manual

Appendix C: Configuring IPSec
between a Microsoft Windows
2000 or XP P C and a Linksys
Cable/DSL VPN Router

Introduction

This document demonstrates how to establish a secure IPSec tunnel using pre-
shared keys to join a private network inside a Linksys Cable/DSL VPN Router
and a Microsoft Windows 2000 or XP PC. You can find detailed information
on configuring the Microsoft 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 illus-
tration 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
BEFVP41
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
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Instant Broadband™ Series EtherFast Cable/DSL VPN Router with 4-Port 10/100 Switch
®

Step-by-Step

Windows 2000/XP
Create IPsec Policy
1. Click the Start button, select Run, and type secpol.msc. in the Open field.
2. Right-click IP Security Policies on Local Computer, and click Create IP
Security Policy.
3. Click the Next button, and then enter a name for your policy (for example,
to_befvp41). Then, click Next.
4. Deselect the Activate the default response rule check box, and then click
the Next button.
5. Click the Finish button, making sure the Edit check box is checked.
Figure C-1
Build 2 Filter Lists: "WinXP=>BEFVP41" and "BEFVP41=>WinXP"
Note: The references in this section to "WinXP" can easily be
exchanged for "Win2000", if running Windows 2000.
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