A simple, colorful interface gave us quick access to the two main components, the Firewall and Defense+ features. Setup required a reboot, as did some settings, such as the Proactive Security Configuration. The firewall's system tray icon accesses a menu that let us configure the Firewall and Defense & Security levels, and also its Sandbox feature and Game Mode. Comodo Firewall's operation is very much like other firewalls we've tried: the first time you use a program or access a Web site with the firewall running, you need to enable it in a pop-up that remembers your choice unless you tell it otherwise. Extras include a Geek Buddy subscription, the SecureDNS network, and a speedy, secure Web browser, Comodo Dragon.Ĭomodo Firewall's setup includes three network locations, with appropriate security levels for each: Home, Work, and Public. It protects your system from viruses, Trojans, worms, hacker attacks, and other threats. Take Comodo Firewall: This full-featured, multilayer firewall application uses cloud-based data to analyze new programs and data to prevent attacks, including zero-day attacks. It does a good job, but there's no reason not to take advantage of much more capable (yet just as free) firewalls, especially when they're easier to use and come with significant extras.

If you're running a fairly recent edition of Windows, you're probably also using the built-in Windows Firewall.

Comodo personal firewall