I have tried many firewall software paid and free. Most of them are humongous system resource eaters. I hate them. Some of them offer very little.
Here is what I want
-It will show me which programs are active, which ports are being used. It will let me restrict access to ports and resources.
-It would let me specify which ip adress should do what(ie controlling internet sharing)
-It needs to be small
-I do not want security suits, just firewall
-I do not want obsessive hidden firewall behaviour that would drive me nuts here(ie Zonealarm)