There are many tools out there to help you manage your firewall’s operations, but there aren’t too many free ones. Comodo Internet Security Comodo, always a popular choice , has merged its antivirus program with Firewall Pro, creating a free security program for everyone. If you are only interested in the firewall (or antivirus), the installer does let you opt out of either of the components. PC Tools Firewall Plus Free Edition PC Tools Firewall Plus is a powerful personal free firewall that protects your computer from hackers and intruders. It can stop Trojans, backdoors, and keyloggers from damaging your computer …