A lot of you had questions pertaining to whether you need a third party firewall if you have a cable or DSL modem/router with built in firewall protection. The first thing you want to check is whether your modem/router has full fledged firewall protection, or is advertising Network Address Translation (NAT) as "firewall" protection. NAT does offer some protection because it hides the internal IP addresses of your computers, but it's not the same as a real firewall. If the device is a firewall, check whether it protects both inbound and outbound messages or only inbound ones. And remember that your DSL/cable device acts as a perimeter firewall. That means it protects you only from computers on the Internet, not from others on your internal network. If you need protection from machines on the local network, you might want to install personal firewall software. Hope this helps, Take care, P.S. Kerio Firewall is now available at my site by the way. Until March its like $15 !