FREE Kerio Personal Firewall SOFTWARE
Kerio Personal Firewall (KPF) is a software agent that builds a barrier between your personal computer and the Internet. KPF is designed to protect your PC against attacks from both the Internet, and other computers in the local network. The firewall controls all data flow in both directions from the Internet to your computer and vice versa, and it can also block all attempted connections, allowing only what you choose to permit. MD5 application signatures protect the computer from Trojan horses imitating trusted programs.
Kerio features three security levels for easy configuration, as well as options for advanced users to create their own rules. The program initially starts in a learning mode, prompting you for each detected connection and creates customized rules automatically. Kerio Personal Firewall is easy enough to use for novice users, and also provides the flexibility of custom rules for advanced users. Pro version available with additional features. Some features are disabled in free version after 30 days.