From PC Tools
PC Tools Firewall Plus is a powerful personal firewall for Windows that protects your computer from intruders and controls the network traffic in and out of your PC. 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 is advanced technology designed specially for people, not experts. Powerful prevention against attacks and known exploits is activated by default and advanced users can also easily create their own packet filtering rules to customize the network defenses. All you need to do is install it for immediate and automatic ongoing protection.
* 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.
Windows XP Home or XP Professional, Windows 2000, Windows 2003