The Linksys Instant Broadband EtherFast Cable/DSL Router is the perfect option to connect multiple PCs to a high-speed Broadband Internet connection or to an Ethernet backbone. Allowing up to 253 users, the built-in NAT technology acts as a firewall protecting your internal network. Configurable as a DHCP server, the EtherFast Cable/DSL Router acts as the only externally recognized Internet device on your local area network (LAN). The router can also be configured to block internal users' access to the Internet. Not only will all of your PCs now be able to enjoy your lightening-fast Broadband Internet connection, they will also be able to share internal network data. With the dual-function speed and power of the EtherFast Cable/DSL Router, your network will take off at speeds faster than you ever imagined possible.