Comodo Firewall 3.8

Comodo’s free Firewall keeps viruses, malware, worms, Trojans, hackers, and all Internet threats from accessing and harming your PC. Using a Comodo-exclusive list of over two million known PC-safe files, Firewall rejects any and all suspicious files, keeping them from executing until you can make sure they’re safe. With free automatic updates for the latest in PC protection.