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EtherFast
®
Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint
VPN 38
Password 51
Status 53
DHCP 55
Log 57
Help 59
Advanced 60
Filters 61
Forwarding 65
Dynamic Routing 70
Static Routing 71
DMZ Host 73
MAC Address Clone 75
DDNS 76
Appendix A: Troubleshooting 79
Common Problems and Solutions 79
Frequently Asked Questions 92
Appendix B: Maximizing VPN Security 96
Appendix C: Configuring IPSec between a
Windows 2000 or XP PC and the Firewall Router 98
Introduction 98
Environment 98
Step One: Create an IPSec Policy 99
Step Two: Build Filter Lists 100
Step Three: Configure Individual Tunnel Rules 105
Step Four: Assign New IPSec Policy 113
Step Five: Create a Tunnel Through the Web-based Utility 114
Appendix D: SNMP Functions 116
Appendix E: How to Ping Your ISP’s E-mail &
Web Addresses 117
Instant Broadband
®
Series
Table of Contents
Chapter 1: Introduction 1
The Linksys EtherFast Cable/DSL Firewall Router with
4-Port Switch/VPN Endpoint 1
Features 1
An Introduction to LANs and WANs 2
IP Addresses 2
Network Setup Overview 4
Chapter 2: Your Virtual Private Network (VPN) 5
Why Do I Need a VPN? 5
What is a Virtual Private Network? 6
Chapter 3: Getting to Know the EtherFast
Cable/DSL Firewall Router 9
The Router’s Back Panel 9
The Router’s Front Panel LEDs 10
Chapter 4: Connect the Router 12
Overview 12
Connecting Your Hardware Together and Booting Up 12
Chapter 5: Configure the PCs 14
Overview 14
Configuring Windows 95, 98, and Millennium PCs 15
Configuring Windows 2000 PCs 17
Configuring Windows XP PCs 19
Chapter 6: Configure the Router 21
Chapter 7: The Cable/DSL Firewall Router’s
Web-based Utility 27
Overview 27
Quick and Easy Router Administration 27
Setup 28
Firewall 35