I have used Zone alarm pro, sygate and kerio firewalls...but whenever I did a firewall test, they failed miserably! I gave this "Outpost firewall pro" a try, and it passed all tests with flying colours. Its beautiful interface (merges with windows!) makes life easier and its realtime log, makes it my favourite firewall. One superb aspect of this firewall is that it doesn't consume resources (I have duron 1GHz and 256 MB RAM) like zonealarm! Free support forum (www.outpost.com/forum) gives what you need!

My suggestion is: Give it a try and you will fall in love with it!

This is easily the best firewall I've ever used. Trust me, it filters far more content than Kerio and Sygate - my two previous favorites - has a smaller footprint, and is far more stable than the attrocious Norton firewall. Add to that the ad blocking, pop-up blocker, script blocking,...etc. and it's a tough-to-beat package.