PC Tools Firewall Plus is a powerful free personal firewall for Windows that protects your computer by preventing unauthorized users from gaining access through the Internet or a network. By monitoring applications that connect to the network Firewall Plus can stop Trojans, backdoors, keyloggers and other malware from damaging your computer and stealing your private information. PC Tools Firewall Plus has advanced technology designed especially for standard home users, not just experts. Powerful prevention against known exploits is activated by default while experienced users can optionally create their own advanced packet filtering rules, including IPv6 support, to customize the network defenses.
PC Tools Firewall Plus feature highlights

• Protects your PC as you are working, surfing and playing.
• Intelligent automatic protection without all the questions.
• Easy to use. Designed for both, novice and expert users.
• Advanced rules to protect your PC against common attacks.
• Best of all it’s FREE. No catches, limitations or time-limits.

Designed for Windows 7 (32/64bit), Vista (32/64bit) and XP (32bit)