Table Of ContentSecure Beginner’s Guide / Network Security: A Beginner’s Guide, 3rd Edition / Eric Maiwald / 570-7 / Front Matter
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Network Security
A Beginner’s Guide,
Third Edition
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About the Author
Eric Maiwald, CISSP, is a Research Vice President with Gartner, Inc., where he focuses
on enterprise security infrastructure and mobility technologies. Mr. Maiwald has more
than 20 years of experience in information security and has worked as a security officer
and consultant for large financial institutions, healthcare providers, services firms, and
manufacturers. He has extensive experience in the security field performing assessments,
policy development, architecture design, and product implementations. Mr. Maiwald holds a
Bachelors of Science degree in Electrical Engineering from Rensselaer Polytechnic Institute
and a Masters of Engineering in Electrical Engineering from Stevens Institute of Technology
and is a Certified Information Systems Security Professional. He is a named inventor on
patent numbers 5,577,209, “Apparatus and Method for Providing Multi-level Security for
Communications among Computers and Terminals on a Network”; 5,872,847, “Using
Trusted Associations to Establish Trust in a Computer Network”; 5,940,591, “Apparatus and
Method for Providing Network Security”; and 6,212,636, “Method for Establishing Trust
in a Computer Network via Association.” Mr. Maiwald is a regular presenter at a number
of well-known security conferences. He has also written Security Planning and Disaster
Recovery (with William Sieglein) and Fundamentals of Network Security, both published by
McGraw-Hill Professional, and he is a contributing author for Hacking Linux Exposed and
Hacker’s Challenge, also published by McGraw-Hill Professional.
About the Technical Editor
Andrew Brandt is both a seasoned news reporter and a cybercrime researcher, currently
working as the Director of Threat Research for Solera Networks. For nine years, he edited
security coverage and wrote an award-winning column about online privacy for PC World.
He then changed gears and jumped into the world of malware analysis, working for anti-
virus vendor Webroot as lead threat research analyst before taking on his current role.
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Network Security
A Beginner’s Guide,
Third Edition
Eric Maiwald
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Secure Beginner’s Guide / Network Security: A Beginner’s Guide, 3rd Edition / Eric Maiwald / 570-7
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This book is dedicated to my wife, Kay, and my two sons, Steffan and Joel.
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Contents at a Glance
PART I Information Security Basics
1 What Is Information Security? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
2 Types of Attacks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3 Hacker Techniques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
4 Information Security Services . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 79
PART II Groundwork
5 Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
6 Managing Risk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
7 The Information Security Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
8 Information Security Best Practices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 179
vii
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viii Network Security: A Beginner’s Guide
PART III Network Security Technology
9 Perimeter Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 207
10 Monitoring Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 229
11 Encryption Technology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 245
Glossary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 279
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293
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Contents
ACKNOWLEDGMENTS ............................................... xvii
INTRODUCTION ..................................................... xix
ABOUT THE SERIES .................................................. xxi
PART I Information Security Basics
1 What Is Information Security? . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Where Sorcery Is Traded for Fallible, Manageable Realities .................... 4
A Retrospective Look at Security ..................................... 5
Define Security as a Process,
Not as Point Products ................................................ 13
Anti-virus Software ............................................... 13
Access Controls .................................................. 13
Firewalls ........................................................ 13
Smart Cards ..................................................... 14
Biometrics ....................................................... 15
Intrusion Detection and Prevention ................................... 16
Policy Management ............................................... 16
Vulnerability Scanning ............................................. 16
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