Attached Link: http://www.psionic.com/abacus/portsentry/

LOL - I use my Linux box ( w/ a combo of ipchains, iptables, portsentry, and tripwire) as my main firewall/router at home. And yeah, I'm a faithful reader of GRC.com... he's been called a kook by most of the industry, but the man just makes too much sense not to pay attention to him. for the *ixers among us, Portsentry (linked above) is the best thing since sliced bread for intrusion detection (it even launches retaliatory scripts if you want it to), and it's free. /P