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Cybersecurity Essentials

You're reading from  Cybersecurity Essentials

Product type Book
Published in Oct 2018
Publisher Wiley
ISBN-13 9781119362395
Pages 784 pages
Edition 1st Edition
Languages
Authors (4):
Charles J. Brooks Charles J. Brooks
Profile icon Charles J. Brooks
Christopher Grow Christopher Grow
Profile icon Christopher Grow
Philip Craig Philip Craig
Profile icon Philip Craig
Donald Short Donald Short
Profile icon Donald Short
View More author details
Toc

Table of Contents (13) Chapters close

1. COVER
2. ACKNOWLEDGMENTS
3. ABOUT THE AUTHORS
4. INTRODUCTION 5. PART I: Securing the Infrastructure 6. PART II: Securing Local Hosts 7. PART III: Securing Local Networks 8. PART IV: Securing the Perimeter 9. INDEX
10. END USER LICENSE AGREEMENT
APPENDIX A: Glossary
1. APPENDIX B: Acronyms
2. APPENDIX C: NIST Preliminary Cybersecurity Framework

CHAPTER 21
Protecting the Perimeter

The second level you need to secure is the inner perimeter, where the private network meets the Internet. What defines a perimeter is the boundary where you have control, versus where you don’t have control. The perimeter is where your private network touches those individuals and companies with which you want to interact. In this chapter, you’ll learn to:

  • Implement firewalls and other intrusion-prevention devices and structures
  • Describe common enterprise-network structures, including intranets, extranets, DMZs, and honeypots
  • Describe the purpose and limitations of firewalls
  • Describe the use of honeypots as an intrusion-prevention technique
  • Understand the role of DMZs (demilitarized zones) in cybersecurity topologies
  • Explain the configuration and operation of a demilitarized zone (DMZ) host, including the key services contained within the zone

Understanding the Perimeter

The inner perimeter is the point where we want to stop the...

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