What is Firewall - in Tamil | Network Security | Tamil | தமிழ் | Hardware and Software Firewall

A firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. It acts as a barrier, often between a trusted internal network and an untrusted external network like the internet, to protect against unauthorized access and malicious threats. Firewalls can be hardware, software, or a combination of both, and they work by inspecting data packets to decide whether to allow or block them.
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