Filseclab Personal Firewall Professional 3.03
One of the best free firewall, it is not only very easy to use, and also very powerful. It can prevent most attacks from worm viruses and Trojans, it can also block some main Adware and Spyware. It offers double filter system for double-layer protection. The digital signature verification can automatically trust the well-known program. Built-in 7 big modes for all kinds of requirements.