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Network Security First-Step: Firewalls

  • Sample Chapter is provided courtesy of Cisco Press.
  • Date: Feb 8, 2012.

Contents

  1. Firewall Frequently Asked Questions
  2. Firewalls Are "The Security Policy"
  3. We Do Not Have a Security Policy
  4. Firewall Operational Overview
  5. Essentials First: Life in the DMZ
  6. Case Studies
  7. Firewall Limitations
  8. Chapter Summary
  9. Chapter Review Questions

Chapter Description

This chapter dissects a firewall’s duties to understand what makes a firewall operate and how it does its job.

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Chapter Review Questions

The following questions assist in reinforcing the concepts covered in this chapter:

  1. Who needs a firewall?
  2. Why do I need a firewall?
  3. Do I need a firewall?
  4. How is a firewall an extension of a security policy?
  5. What is the name of the table in a firewall that tracks connections?
  6. What fundamental role does a DMZ fulfill in network security?
  7. What are four benefits of a DMZ?
  8. Can firewalls enforce password policies or prevent misuse of passwords by users?
  9. Do firewalls guarantee that your network will be protected?
  10. Are all firewalls created equal?

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