Question

what is firewall ?
Best Answer Will Be Mark As Brainliest !!!!!​

Answer 1

Answer:

A firewall is a security device — computer hardware or software — that can help protect your network by filtering traffic and blocking outsiders from gaining unauthorized access to the private data on your computer. ... Firewalls can provide different levels of protection

Answer 2

FIREWALLS

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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.