Sygate Personal Firewall 5.6.2808 (Freeware)

Free for personal use, Sygate Personal Firewall provides best of breed security in a user friendly interface, protecting your PC from hackers, trojans and DoS attacks.

Features include full-ICS support, protocol driver level protection, enhanced logging, and more.

Sygate Personal Firewall delivers unobtrusive, highly configurable, enforceable rule-based security policy by constantly operating in the background of your PC. Policies regarding applications, trusted IP addresses, ports, protocols and scheduling can be customized to support and secure any network configurations or requirements. Designed with high performance in mind, it delivers top-notch security without sacrificing your computing power.

Note that from November 30th, 2005 all Sygate consumer firewall products have been discontinued but this versions is available here for free use.

Outpost Firewall (Freeware)

Outpost Firewall gives peace of mind from any virtually every Internet danger. Unlike other personal firewalls, Outpost starts protecting against all kinds of internal and external attacks as soon as it's installed.

This is the first firewall with an open architecture and support for plug-ins, so its capabilities can easily be extended by thousands of developers worldwide.

Key Benefits:

• Basic Firewall Protection - Standard packet and application filtering safeguard your computer from unwanted communications.
• Connections Monitoring - Lets you see network activity in real time, to help define inappropriate connections and close them right away.
• Surfing Protection - Maintains your privacy on the Internet, keeps browser protected from Internet dangers.