Comodo's free Firewall is your first layer of defense against viruses, worms, Trojans, hackers and all Internet threats.
A personal firewall protects users from internet threats by implementing security policies that restrict network communications in and out of a computer. A personal firewall is extremely important for computers with a static IP address or one with a stable IP address, such as with cable modems or DSL.
Like any other similar application, Comodo Firewall filters all ingoing and outgoing internet traffic to and from your PC. The firewall must be trained during the first few days, so that it learns to distinguish harmless programs from potentially risky processes.
The interface in Comodo Firewall is clear and intuitive. It’s divided into several tabs (Summary, Firewall, Defense+ and More) which give you access to the program’s main functions. Both the security level and alert level can be customized, depending on the security you need, and also on the number of desktop notifications you want to see.