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Managing Information Security, 2nd Edition
book

Managing Information Security, 2nd Edition

by John R. Vacca
August 2013
Intermediate to advanced
372 pages
12h 9m
English
Syngress
Content preview from Managing Information Security, 2nd Edition
Chapter 6

Firewalls

Errin W. Fulp Dr.,    Wake Forest University

The purpose of the firewall and its location is to have network connections traverse the firewall, which can then stop any unauthorized packets. A simple firewall will filter packets based on IP addresses and ports. A useful analogy is filtering your postal mail based only on the information on the envelope. You typically accept any letter addressed to you and return any letter addressed to someone else. This act of filtering is essentially the same for firewalls. This chapter refers to the secure network as the internal network; the insecure network is the external network. The remainder of this chapter provides an overview of firewall policies, designs, features, and configurations. ...

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Publisher Resources

ISBN: 9780124166882