FUNDAMENTALS OF COMPUTER

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 system that is designed to protect your private network from unauthorised access. The firewall does so by filtering the information that comes in from the internet. With the information the firewall has available, it blocks unauthorised access and allows authorised access.

Detailed explanation-4: -A firewall is essential software or firmware in network security that is used to prevent unauthorized access to a network. It is used to inspect the incoming and outgoing traffic with the help of a set of rules to identify and block threats by implementing it in software or hardware form.