Principles of Information Security (MindTap Course List)
Principles of Information Security (MindTap Course List)
6th Edition
ISBN: 9781337516938
Author: WHITMAN
Publisher: Cengage
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Chapter 6, Problem 3RQ
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.

Application Layer proxy firewall:

It is a device, which can function both on proxy server and as a firewall. It is also denoted as “application firewall” or “reverse proxy”.

  • It has been configured to execute special software, which act as a proxy for a package request.

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.

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