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Network Security, Firewalls, and VPNs by J. Michael Stewart

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Chapter 7. Exploring the Depths of Firewalls

A FIREWALL IS A KEY COMPONENT of a complete security infrastructure. And while common, a firewall is by far not a simple security measure. You must understand the complexities of a firewall to design a firewall's security policy, build the firewall, and configure it properly.

This chapter builds on the firewall information previously presented by discussing the foundations of firewall rules, authentication, and authorization. You will learn how these relate to monitoring and logging, interpreting firewall logs and alerts, intrusion detection, firewall limitations, improving firewall performance, how encryption relates to firewalls, various firewall enhancements, and security concerns related to firewall ...

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