Question

What is firewall? and write the types of firewall?

Answer 1

A wall to inhibit or prevent the spread of fire is called firewall.There are 5 types of firewall- Packet filtering firewall, Circuit level gateways,Stateful inspection firewall, Application level gateways and next gen firewalls.

Answer 2

A firewall is a technique used in a secured computer system or network to block unathorized users and allow only the athorized user.