Question

what is a firewall?​

Answer 1

Answer:

A firewall is a system designed to prevent unauthorized access to or from a private network. You can implement a firewall in either hardware or software form, or a combination of both. Firewalls prevent unauthorized internet users from accessing private networks connected to the internet, especially intranets

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Answer 2

Explanation:

if Firewall is a system designed to prevent to unauthorized access to or from a private network