A firewall is a system that is designed to protect a computer or computer network from unauthorized access or attack. Firewalls can be hardware-based, software-based, or a combination of both. Firewalls work by inspecting all inbound and outbound traffic on a computer or network and blocking traffic that does not meet specific criteria.

Firewalls are an important part of network security and are used to protect both private and public networks. They can be used to protect against a variety of attacks, including denial of service attacks, intrusion attempts, and malware.

Firewalls can be configured in a variety of ways, …