Download PC Tools Firewall Plus Free Edition
PC Tools Firewall Plus Free Edition is a useful software that protects your computer from any malicious intruders, hackers, worms, etc. It monitors the applications that connect to your computer by checking the traffic that comes into your network. One special feature of this software is that it can detect keyloggers (programs created to steal private and important information of the user).
This is a firewall very useful for unexperienced users that need to get rid of hackers, Trojans and viruses in general.
PC Tools Firewall Plus Free Edition is compatible with Windows XP and Windows Vista and the best, it's completely free.