Question

Name the device which is used in a computer system or network to block unauthorized access .

Answer 1

A Firewall is a security system designed to prevent unauthorised access on hardware or on computer system.

Answer 2

A Firewall is the security system that is designed for preventing the unauthorised access on the hardware or the computer system.

The firewall is a network security system which monitors controls the incoming, outgoing network traffic on the basis of the security rules.

It creates the barrier between internal network and external network.