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What is it?

A network security system built into hardware or software that monitors network traffic and controls incoming and outgoing traffic based on a set of rules.

Why is it important?

Firewalls enable system administrators to monitor and control network traffic coming into and out of their systems. Firewalls provide a first line of defense against network-based cybersecurity attacks. They are also used to censor information by blocking traffic to and from certain sites.

...continue reading "Term of the Week: Firewall"