Question

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what is firewall? ​

Answer 1

Answer:

In computing, a firewall is a network security system that monitors and controls incoming and outgoing network traffic based on predetermined security rules. A firewall typically establishes a barrier between a trusted network and an untrusted network, such as the Internet.

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Answer 2

Simply put, a firewall is a digital fortress that acts as a shield between your computer and a cyber threat from an external network ( like the internet). It can be comfort to a filter paper that sifts out unwanted traffic like malicious softwareeex: viruses and spyware, and allows only what is deemed safe for your computer.