the "best" firewall doesn't exist, your security depends on how you configure it.
don't think that you only need to install it and forget it at all! :unch: there are lots of rules to create and change to make your pc secure.
but after i tried za, sygate, and other so called firewalls, i decided that the best for me is Outpost (the Pro version!

).
i now it isn't simple for newbies, what's why it's the most configurable and reliable of all.
it works very well on win2003 server sp1 too! (with AD,DNS,routing/NAT and DHCP services enabled)
when you install it, it already has some default rules for networks,IPs,programs,ports and protocols, but if you tune up all settings, your internet connection become very secure.
and you have to be patient too: i need 3 or 4 days to make the perfect settings! :bounce:
if you install the blockpost plugin, you have a realtime black ip addresses filter too (trackers,trojans,spyware,adaware,hijacked IPs,bogon IPs).
the latest release is 2.7.485.5401(412).
bye bye :angel: