Contents at a Glance Foreword xxiii Introduction xxiv PART I An Overview of Network Security 2 Chapter 1 Network Security Essentials 5 Chapter 2 Attack Threats Defined and Detailed 23 Chapter 3 Defense in Depth 43 PART II Managing Cisco Routers 56 Chapter 4 Basic Router Management 59 Chapter 5 Secure Router Administration 79 PART III Authentication, Authorization, and Accounting (AAA) 98 Chapter 6 Authentication 101 Chapter 7 Authentication, Authorization, and Accounting 115 Chapter 8 Configuring RADIUS and TACACS+ on Cisco IOS Software 137 Chapter 9 Cisco Secure Access Control Server 157 Chapter 10 Administration of Cisco Secure Access Control Server 175 PART IV The Cisco IOS Firewall Feature Set 188 Chapter 11 Securing the Network with a Cisco Router 191 Chapter 12 Access Lists 203 Chapter 13 The Cisco IOS Firewall 219 Chapter 14 Context-Based Access Control (CBAC) 231 Chapter 15 Authentication Proxy and the Cisco IOS Firewall 251 Chapter 16 Intrusion Detection and the Cisco IOS Firewall 279 PART V Virtual Private Networks 300 Chapter 17 Building a VPN Using IPSec 303 Chapter 18 Scaling a VPN Using IPSec with a Certificate Authority 339 Chapter 19 Configuring Remote Access Using Easy VPN 359 Chapter 20 Scaling Management of an Enterprise VPN Environment 379 PART VI Scenarios 400 Chapter 21 Final Scenarios 403 Appendix Answers to the “Do I Know This Already?” Quizzes and Q&A Sections 427 Glossary 463 Index 472