Kendrick

A firewall is a computer security measure that restricts or blocks unauthorized access to a computer network. The purpose of a firewall is to protect computer systems and data from unauthorized access, attack, or theft.

A firewall can also help to protect the network infrastructure and enhance the security of the network.

A firewall can be used to protect a single computer system or a network of computers. A firewall can be implemented as a hardware or software device.

A software firewall is a program that resides on a computer system and provides the same level of security as a hardware firewall. A hardware firewall is a dedicated hardware device that provides security for a computer system.

A firewall can be used to protect computer systems from unauthorized access, attack, or theft. A firewall can also help to protect the network infrastructure and enhance the security of the network.

A firewall can be used to protect a single computer system or a network of computers.