Filseclab Personal Firewall Professional Edition is 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.

It also supports realtime monitor, interactive rules creator, password protection, log, live update, traffic graph, privacy protection, Windows Security Center, balloon message alert and more unique features. It can provide the best protection for your network.