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EtherFast
®
Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint
1
Chapter 1: Introduction
The Linksys EtherFast
®
Cable/DSL Router
The Linksys Instant Broadband EtherFast Cable/DSL Firewall Router with 4-
Port Switch/VPN Endpoint is the perfect solution for connecting a small group
of PCs to a high-speed broadband Internet connection or a 10/100 Ethernet
backbone. The Router can be configured to limit internal users’ Internet access
based on URLs and/or time periods—URL filtering and time filtering. For
enhanced protection against intruders from the Internet, the Router features an
advanced Stateful Packet Inspection firewall.
Use the Cable/DSL Firewall Router with 4-Port Switch/VPN Endpoint to cre-
ate up to two IPSec VPN tunnels, so you can securely connect to the corporate
server from your home office—or any location when you’re on the road. The
Router provides a dedicated port for DMZ hosting and acts as the only exter-
nally recognized Internet gateway on your local area network (LAN). With the
performance and security features of the Cable/DSL Firewall Router with 4-
Port Switch/VPN Endpoint, your network will take advantage of the Internet
while keeping its data secure.
• Supports Universal Plug-and-Play
• Protects PCs from Ping of Death, SYN Flood, Land Attacks, IP Spoofing,
and Other DoS (Denial of Service) Attacks
• Supports Up to Two IPSec Virtual Private Network (VPN) Tunnels
• Supports URL Filtering and Time Filtering
• Blocks Proxy, Java, ActiveX, and Cookies
• Easily Configurable through a Web Browser from Any Networked PC
• Supports IPSec and PPTP Pass-Through
• Administer and Upgrade Your Router Remotely over the Internet
• Supports Traffic and Event Logging
• Configurable as a DHCP Server on Your Network
• Administers Can Block Specific Internal Users’ Internet Access with
Filtering
• Supports SNMP ver. 2.0 and SNMP MIB I and II
• Supports NTP (Network Time Protocol) for Synchronization with Real-
Time Server
• Support for PPPoE Connection
• Dedicated Port for DMZ
The Linksys EtherFast Cable/DSL Firewall Router with
4-Port Switch/VPN Endpoint
Features
Instant Broadband
®
Series
Appendix F: Installing the TCP/IP Protocol 120
Appendix G: Finding the MAC Address and IP
Address for Your Ethernet Adapter 122
Appendix H: Glossary 126
Appendix I: Specifications 139
Environmental 139
Appendix J: Warranty Information 140
Appendix K: Contact Information 141