Unlike data communications of the past, today’s networks consist of numerous devices that handle the data as it passes from the sender to the receiver. However, security concerns are frequently raised in circumstances where interconnected computers use a network not controlled by any one entity or organization. Introduction to Network Security examines various network protocols, focusing on vulnerabilities, exploits, attacks, and methods to mitigate an attack.
The book begins with a brief discussion of network architectures and the functions of layers in a typical network. It then examines vulnerabilities and attacks divided into four categories: header-, protocol-, authentication-, and traffic-based. The author next explores the physical, network, and transport layers of each network as well as the security of several common network applications. The last section recommends several network-based security solutions that can be successfully deployed.
This book uses a define-attack-defend methodology for network security. The author briefly introduces the relevant protocols and follows up with detailed descriptions of known vulnerabilities and possible attack methods. He delineates the threats against the protocol and presents possible solutions. Sample problems and lab experiments based on the concepts allow readers to experiment with attacks and assess the effectiveness of solutions. Two appendices provide further clarification and a companion website is offered which supplements the material.
While most of the books available on this subject focus solely on cryptographic techniques to mitigate attacks, this volume recognizes the limitations of this methodology and considers a wider range of security problems and solutions. By focusing on a practical view of network security and examining actual protocols, readers can better understand the vulnerabilities and develop appropriate countermeasures.
Table of Contents
Introduction to Network Concepts and Threats
Taxonomy of Network-Based Vulnerabilities
Physical Network Layer Overview
Network Layer Protocols
Transport Layer Protocols
Application Layer Overview
Remote Access Security
Common Network Security Devices
Appendix A: Cryptology
Appendix B: Laboratory Configuration
Appendix C: Homework Solutions
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… Students can easily understand how things work thanks to the different figures/definitions … students can see the different steps taken to build a secure environment and avoid most of the usual mistakes. … A website (http://www.dougj.net/textbook) is provided to support the book, where the reader can find additional content, like instructor materials, slides to support the book, on-line tutorials, help to start the programming parts. It is not mandatory at all to understand the book, but it is a really nice addition. … the book is really well written, and easily understandable without lacking the rigor required in the domain. …This book won’t get dusty on my shelf, as it contains so [much] precious information, and is enjoyable.
—IACR book reviews, February 2010