EtherFast®Cable/DSLFirewall Router with 4-Port Switch/VPN Endpoint
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Chapter 1: IntroductionThe Linksys EtherFast®Cable/DSL Router
The Linksys Instant Broadband EtherFast Cable/DSL Firewall Router with 4-
Port Switch/VPNEndpoint is the perfect solution for connecting a small g roup
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/DSLFirewall 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/VPNEndpoint, 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