Chapter 0 Reader’s Guide 读者指南 0.1 Outline of This Book 本书概览 0.2 Roadmap 路线图 0.3 Internet and Web Resources Internet与Web资源 Chapter 1 Introduction 引言 1.1 Security Trends 安全趋势 1.2 The OSI Security Architecture OSI安全体系结构 1.3 Security Attacks 安全攻击 1.4 Security Services 安全服务 1.5 Security Mechanisms 安全机制 1.6 A Model for Network Security 网络安全模型 1.7 Recommended Reading and Web Sites 推荐读物与网站 1.8 Key Terms, Review Questions, and Prob