Network Defense and Countermeasures: Principles and Practices

A comprehensive guide to modern network security, this book is part of the Pearson IT Cybersecurity Curriculum (ITCC). Authored by William Easttom II, it offers an in-depth exploration of essential concepts, terminology, tools, and skills necessary for effective network defense. The third edition brings together updated coverage of key security standards and models applicable to both business and government sectors.

The book introduces core technologies like firewalls, intrusion-detection systems, and virtual private networks (VPNs), providing practical insights into their deployment and application. It delves into the use of encryption for data protection, exploring how cryptographic public/private key systems, digital signatures, and certificates can safeguard network communications.

Easttom also covers critical issues such as physical security, forensic analysis, and the growing threat of cyberterrorism. Throughout the text, readers will find quizzes, exercises, projects, and web resources that enhance understanding and application in real-world scenarios.

Topics include evaluating network risks, choosing appropriate security approaches, countering widespread attacks (including social engineering), deploying firewalls and intrusion detection systems, securing data with encryption, defending against malware, hardening operating systems, defining robust security policies, exploring leading standards and models like ISO and NIST, preparing for post-attack investigations, and addressing the escalating risks of espionage.

This book serves as an ideal introduction for network/computer security professionals and students, offering a blend of theory and practical application to ensure effective learning in both academic and professional settings. With its focus on current challenges and solutions, it equips readers with the knowledge and skills needed to defend modern networks effectively.