Best firewall.

[KillerBee]

What type of virus/worm/roach infested neighborhood do y'all run your computer in anyhows?
I haven't needed anything but a cheap home router, some free AV and built-in Windows firewall since XP SP2

[Scooby Doo]

Inbound routers are great... outbound... not so much

[John Conner]

SPI can only do so much. Inbound it will handel not outboad. Windows Firewall is like SPI in that sense. You need a product that blocks gratuitous ARP frames, protect the ARP cache and can anylize the protocol's. If only the feds took this approach...