The LinkSys is also a firewall. But, this is only an incomming firewall. It will not keep unwanted trojans you may have inadvertantly downloaded from using internet services on your PC. For best protection you may want to install ZoneAlarm (free) on your PCs also. This gives you very strong protection.

BOb


>Hello,
>
>I have a cable modem and a Linksys BEFSR81 Etherfast Cable/DSL Router. The cable modem resets the IP address every 24 hours. The Linksys is being used as a DHCP server for the local network. I have Norton Virus protection on each of the computers (5 of them) on the local network. Is this reasonably sufficient protection or should I be looking for a firewall device to put between the cable modem and the Linksys router?