In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules.[1] A firewall typically establishes a barrier...

A firewall is a network security device that monitors incoming and outgoing network traffic and decides whether to allow or block specific traffic based on a defined set of security rules.

Windows does have a firewall built-in, but did you know there are other options? Here's a list of the best free firewall programs we could find. A list of the best free firewall programs for Windows.

Windows Firewall Notifier 2.0 beta 3. RusRoute firewall 2.1.3.

A free firewall with the best antivirus software offers online threat protection. Download world no.1 free firewall that finds threats and protects your PC!