Chapter 6, Problem 4RQ

Program Plan Intro

Firewall:

A firewall is security software which imposes a set of protocols to prevent specific types of data from moving among trusted and untrusted level of networks.

Packet filtering firewall:

It is a network device from the types of firewall, which examines header of packets that transmits into a network and finds whether to drop it or forward it through next network based on its rules.

• It has separate subsets such as static packet filtering and dynamic packet filtering.

Static packet filtering:

It is a firewall, which requires configuration rules to be physically made, sequenced and altered within the firewall.

Dynamic packet filtering:

It is a firewall, which can control network traffic and make or alter the configuration rules to adapt.