Instant Broadband™Series EtherFast

®
Cable/DSLRouters
Chapter 1: Introduction
The Linksys EtherFast®Cable/DSL Router
Congratulations on the purchase of the EtherFast Cable/DSL Router from
Linksys! The Router is the perfect solution for connecting a network of PCs to
a high-speed broadband Internet connection and to an Ethernet network back-
bone. Configurable as a DHCP server for your network, the Router is the only
visible network device on the Internet. The Router also serves as your Internet
NATfirewall, protecting your network’s PCs from being accessed by external
users. All incoming data packets are monitored and filtered. The Router can
also be configured to block internal users’ access to the Inter net with IP f ilter-
ing, as well as to play Internet games, videoconference, and much more. Plus,
the Router supports Universal Plug and Play (UPnP), which allows Windows
XP to automatically configure the Router for various Internet applications,
such as videoconferencing and gaming—making the Router a snap to use.
Now all of your PCs can enjoy lightning-fast broadband Internet connections
and share internal network data. Link them all together and network faster than
you ever thought possible.
•Connects Your Cable or DSL Modem to Multiple Computers for Internet,
File, and Printer Sharing
•Set Up Your Computers and Router Easily Using Linksys Setup Wizard
•Supports UPnP for Easy Network Configuration
•Supports Enhanced Security Using NAT Firewall and ZoneAlarm Pro* and
PC-cillin Software*
•Access Your Network Remotely over the Internet through Virtual Private
Networking (VPN)—Supports IPSec and PPTP Pass-Through
•Easily Configurable through a Web Browser—Locally and over the Internet
•Administer and Upgrade the Router Remotely over the Internet
•Advanced Security Management Functions for Port Filtering, MAC Address
Filtering, and DMZ Hosting
•3- or 4-Port, 10/100 Mbps, Built-in Switch Speeds Up Your Gaming and
Multimedia Experience (BEFSRU31 & BEFSR41 ver. 2 only)
•Configurable as a DHCP Server on Your Network
* each sold separately
Appendix E: Twisted-Pair Cabling 110
Crimping Your Own Network Cables 111
Appendix F: Finding the MAC Address and IP
Address for Your Ethernet Adapter 112
Appendix G: Setting Up AOL®
Broadband Cable & DSL 116
AOL Broadband via Cable 116
AOL Broadband via DSL 118
Appendix H: 4-Port Router Specifications 119
4-Port Environmental Specifications 119
Appendix I: 1-Port Router Specifications 120
1-Port Environmental Specifications 120
Appendix J: 3-Port Router Specifications 121
3-Port Environmental Specifications 121
Appendix K: Warranty Information 122
Appendix L: Contact Information 123
1
The Linksys EtherFast Cable/DSL Router
Features