PC Tools Firewall Plus Free Edition 2.0.0.25

All you need to do is install it for immediate and automatic ongoing protection. It is recommended for use alongside of AntiSpyware and Antivirus software like AVG or Spyware Doctor to protect PC against Spyware, hackers, worms, and viruses.

Version 2.0 includes support for Windows Vista, IP v6 and additional protection functionality.