http://www.sunbelt-software.com/Home-Home-Office/Sunbelt-Personal-Firewall/Download/Free 30 day full featured evaluation
For Windows
- 2000 Professional (desktop version)
- XP Home
- XP Professional
- XP Media Center Edition Download Sunbelt Personal Firewall
We plan on releasing a Vista compatible version in the near future
Sunbelt Personal Firewall 4 can run in a free mode vs. a full (paid) mode. Install it now, and for the first 30 days it will run in 'full' mode. After that, it shuts down selected features, but will continue to run in 'free' mode".
don't know how much you get as far as protection in the free mode
comodo is free and full protection