COMPUTER NETWORKING

Detailed explanation-1: -A firewall is software or firmware that prevents unauthorized access to a network. It inspects incoming and outgoing traffic using a set of rules to identify and block threats.

Detailed explanation-2: -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 in a combination of both. Firewalls prevent unauthorized internet users from accessing private networks connected to the internet, especially intranets.

Detailed explanation-3: -A Firewall is a network security device that monitors and filters incoming and outgoing network traffic based on an organization’s previously established security policies. At its most basic, a firewall is essentially the barrier that sits between a private internal network and the public Internet.

Detailed explanation-4: -Technical Network Security Technical security controls protect data that is stored on the network or which is in transit across, into or out of the network.