Answer to Question #246596 in Computer Networks for Piento

Question

A firewall is Network security device that monitors incoming and outgoing network traffic as well

as permits or blocks data packets based on a set of security rules”.

Critically discuss how a firewall operates and the various types of firewalls (Use appropriate

diagram to corroborate your discussion)

Answer 1

Firewall are software or hardware that operates as a filtration system from the cyber attackers injecting codes, data to a computer in a network. Having many types of firewalls such as packet filtering firewall which performs inspection of the data packets coming through the router destination and origination of IP address will help to reduce data traffic on the network and improves security. Circuit-level Gateways is another firewall that easily approve or deny a traffic through verification of transmission control protocol without consuming computing resources.