You can get there Whether you're already working and looking to expand your skills in the computer networking and security field or setting out on a new career path, Network Security Fundamentals will help you get there. Easy-to-read, practical, and up-to-date, this text not only helps you learn network security techniques at your own pace; it helps you master the core competencies and skills you need to succeed. With this book, you will be able to: * Understand basic terminology and concepts related to security * Utilize cryptography, authentication, authorization and access control to increase your Windows, Unix or Linux network's security * Recognize and protect your network against viruses, worms, spyware, and other types of malware * Set up recovery and fault tolerance procedures to plan for the worst and to help recover if disaster strikes * Detect intrusions and use forensic analysis to investigate the nature of the attacks Network Security Fundamentals is ideal for both traditional and online courses. The accompanying Network Security Fundamentals Project Manual ISBN: 978-0-470-12798-8 is also available to help reinforce your skills. Wiley Pathways helps you achieve your goals The texts and project manuals in this series offer a coordinated curriculum for learning information technology. Learn more at www.wiley.com/go/pathways. You can get there Whether you’re already working and looking to expand your skills in the computer networking and security field or setting out on a new career path, Network Security Fundamentals will help you get there. Easy-to-read, practical, and up-to-date, this text not only helps you learn network security techniques at your own pace; it helps you master the core competencies and skills you need to succeed. With this book, you will be able to: Understand basic terminology and concepts related to security - Utilize cryptography, authentication, authorization and access control to increase your    Windows, Unix or Linux network’s security - Recognize and protect your network against viruses, worms, spyware, and other types of malware - Set up recovery and fault tolerance procedures to plan for the worst and to help recover if disaster strikes - Detect intrusions and use forensic analysis to investigate the nature of the attacks Network Security Fundamentals is ideal for both traditional and online courses. The accompanying Network Security Fundamentals Project Manual ISBN: 978-0-470-12798-8 is also available to help reinforce your skills. Wiley Pathways helps you achieve your goals The texts and project manuals in this series offer a coordinated curriculum for learning information technology. Learn more at www.wiley.com/go/pathways. You can get there Whether you’re already working and looking to expand your skills in the computer networking and security field or setting out on a new career path, Network Security Fundamentals will help you get there. Easy-to-read, practical, and up-to-date, this text not only helps you learn network security techniques at your own pace; it helps you master the core competencies and skills you need to succeed. With this book, you will be able to: Understand basic terminology and concepts related to security - Utilize cryptography, authentication, authorization and access control to increase your Windows, Unix or Linux network’s security - Recognize and protect your network against viruses, worms, spyware, and other types of malware - Set up recovery and fault tolerance procedures to plan for the worst and to help recover if disaster strikes - Detect intrusions and use forensic analysis to investigate the nature of the attacks Network Security Fundamentals is ideal for both traditional and online courses. The accompanying Network Security Fundamentals Project Manual ISBN: 978-0-470-12798-8 is also available to help reinforce your skills. Wiley Pathways helps you achieve your goals The texts and project manuals in this series offer a coordinated curriculum for learning information technology. Learn more at www.wiley.com/go/pathways. Rachelle Reese has been designing and developing technical training courses for over ten years and has written a number of books on programming. She has an MA from San Jose State University. She is also a Microsoft Certified Application Developer (MCAD). Wiley Pathways Network Security Fundamentals By Eric Cole Ronald L. Krutz James Conley Brian Reisman Mitch Ruebush Dieter Gollmann Rachelle Reese John Wiley & Sons Copyright © 2007 Eric Cole All right reserved. ISBN: 978-0-470-10192-6 Chapter One PROTECTING AGAINST MALWARE Starting Point Go to www.wiley.com/college/cole to assess your knowledge of protecting a computer against viruses, worms, and other malicious programs. Determine where you need to concentrate your effort. What You'll Learn in This Chapter * Viruses * Worms * Trojan horses * Spyware * Web browser security * Spam