Network Security

Network Security

A Practical Approach

1st Edition - April 8, 2005

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  • Author: Jan Harrington
  • eBook ISBN: 9780080455372

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Network Security is a comprehensive resource written for anyone who plans or implements network security measures, including managers and practitioners. It offers a valuable dual perspective on security: how your network looks to hackers who want to get inside, and how you need to approach it on the inside to keep them at bay. You get all the hands-on technical advice you need to succeed, but also higher-level administrative guidance for developing an effective security policy. There may be no such thing as absolute security, but, as the author clearly demonstrates, there is a huge difference between the protection offered by routine reliance on third-party products and what you can achieve by actively making informed decisions. You’ll learn to do just that with this book’s assessments of the risks, rewards, and trade-offs related implementing security measures.

Key Features

  • Helps you see through a hacker's eyes so you can make your network more secure.
  • Provides technical advice that can be applied in any environment, on any platform, including help with intrusion detection systems, firewalls, encryption, anti-virus software, and digital certificates.
  • Emphasizes a wide range of administrative considerations, including security policies, user management, and control of services and devices.
  • Covers techniques for enhancing the physical security of your systems and network.
  • Explains how hackers use information-gathering to find and exploit security flaws.
  • Examines the most effective ways to prevent hackers from gaining root access to a server.
  • Addresses Denial of Service attacks, "malware," and spoofing.
  • Includes appendices covering the TCP/IP protocol stack, well-known ports, and reliable sources for security warnings and updates.


Security practitioners, managers, and administrators working in IT and networking departments.

Table of Contents

  • Chapter 1: In the Beginning
    1.0 Introduction
    1.1 Defining Security
    1.2 The Two Views of Network Security
    1.3 The Organizational Security Process
    1.4 Preparing a Security policy
    1.5 Security Audits
    1.6 Summary

    Chapter 2: Basic Security Architecture
    2.0 Introduction
    2.1 Secure Network Layouts
    2.2 Firewalls
    2.3 Hands On: Setting File and Directory Permissions
    2.4 Summary

    Chapter 3: Physical Security
    3.0 Introduction
    3.1 Dealing with Theft and Vandalism
    3.2 Protecting the System Console
    3.3 Managing System Failure
    3.4 Hands on: Providing Physical Security
    3.5 Summary

    Chapter 4: Information Gathering
    4.0 Introduction
    4.1 Social Engineering
    4.2 Using Published Information
    4.3 Port Scanning
    4.4 Network Mapping
    4.5 Hands On
    4.6 Summary

    Chapter 5: Gaining and Keeping Root Access
    5.0 Introduction
    5.1 Root Kits
    5.2 Brute Force Entry Attacks and Intrusion Detection
    5.3 Buffer overflow Attacks
    5.4 Hands On
    5.5 Summary

    Chapter 6: Spoofing
    6.0 Introduction
    6.1 TCP spoofing
    6.2 DNS spoofing
    6.3 IP (and E-Mail) spoofing
    6.4 Web spoofing
    6.5 Hands On
    6.6 Summary

    Chapter 7: Denial of Service Attacks
    7.0 Introduction
    7.1 Single source DoS Attacks
    7.2 Distributed DoS Attacks
    7.3 Hands On
    7.4 Summary

    Chapter 8: Malware
    8.0 Introduction
    8.1 A Bit of Malware History
    8.2 Types of Malware Based on Propagation Methods
    8.3 Hands On
    8.4 Summary

    Chapter 9: User and Password Security
    9.0 Introduction
    9.1 Password Policy
    9.2 Strong Passwords
    9.3 Password File Security
    9.4 Password Audits
    9.5 Enhancing Password Security with Tokens
    9.6 Hands On: Password Management Software
    9.7 Summary

    Chapter 10: Remote Access
    10.0 Introduction
    10.1 Remote Access Vulnerabilities
    10.2 VPNs
    10.3 Remote User Authentication
    10.4 Hands On: OS VPN Support
    10.5 Summary

    Chapter 11: Wireless Security
    11.0 Introduction
    11.1 Wireless Standards
    11.2 Wireless Network Vulnerabilities
    11.3 Wireless Security Provisions
    11.4 Hands On: Securing Your 802.11x Wireless Network
    11.5 Summary

    Chapter 12: Encryption
    12.0 Introduction
    12.1 To Encrypt or Not to Encrypt
    12.2 Single Key Encryption Schemes
    12.3 Two-Key Encryption Schemes
    12.4 Combining Single- and Two-Key Encryption
    12.5 Ensuring Message Integrity
    12.6 Message Authentication and Digital Certificates
    12.7 Composition and Purpose of PKI
    12.8 Hands On
    12.9 Summary

    Appendix A: The TCP/IP Protocol Stack
    13.0 Introduction
    13.1 The Operation of a Protocol Stack
    13.2 The Application Layer
    13.3 The Transport Layer
    13.4 The Internet Layer
    13.5 The Logical Link Control Layer
    13.6 The MAC Layer
    13.7 The Physical Layer

    Appendix B: TCP and UDP Ports
    14.0 Well-Known Ports
    14.1 Registered Ports
    14.2 Port List References

    Appendix C: Security Update Sites
    15.0 Professional Security Update Sites
    15.1 Other Sites of Interest


Product details

  • No. of pages: 384
  • Language: English
  • Copyright: © Morgan Kaufmann 2005
  • Published: April 8, 2005
  • Imprint: Morgan Kaufmann
  • eBook ISBN: 9780080455372

About the Author

Jan Harrington

Jan L. Harrington, author of more than 35 books on a variety of technical subjects, has been writing about databases since 1984. She retired in 2013 from her position as professor and chair of the Department of Computing Technology at Marist College, where she taught database design and management, data communications, computer architecture, and the impact of technology on society for 25 years.

Affiliations and Expertise

Professor and Department Chair, Computer Science, Marist College, Hyde Park, NY, USA

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