Question

what is firewall? why is it used in a network? ​

Answer 1

Answer:

here is your answer

Explanation:

A firewall is a security device in the form of computer hardware or software. It can help protect your network by acting as an intermediary between your internal network and outside traffic. It monitors attempts to gain access to your operating system and blocks unwanted incoming traffic and unrecognized sources.

Answer 2

Answer:

A firewall is a security device in the form of computer hardware or software. It can help protect your network by acting as an intermediary between your internal network and outside traffic

Explanation: