Firewallsprotect networks by monitoring and controlling traffic based on defined rules. Learn what afirewallis, how it works, and explore key types. Firewallsprotect against cyber attacks by blocking malicious traffic. Learn more about howfirewallswork, different types offirewalls&firewallexamples. Oct 16, 2025 ·Afirewallis the first line of defense in cybersecurity, acting as a security barrier between internal systems and external networks. It forces all traffic through a single checkpoint, where data packets are monitored, filtered, and either allowed or blocked based on predefined rules. Apr 3, 2025 ·Afirewallis a network security device that acts as a gatekeeper.Firewallsmonitor and control incoming and outgoing traffic from a computer network.
