[Bungleau]

Interesting. My hardware firewall (Linksys gateway/router) protects me from the outside, but it doesn't protect me from anything that's on the inside. So if one computer on my network gets a trojan or something, the hardware firewall is useless.

That's where ZA comes in... to protect me from things already here trying to get out. In fact, it popped up with something interesting last night. Intellitype Pro (the software that drives the Microsoft keyboard I have) was trying to access the internet for some reason... and since I can't think of a thing it would need, I put it on the black list.

If you've got a more advanced hardware firewall, you can protect against outgoing traffic as well.