Chapter 7: IOS Firewall - Intrusion Detection System

Chapter 7: IOS Firewall—Intrusion Detection System


In this chapter, you will learn how to:

  • Use Cisco IOS Firewall IDS

  • Initialize the IOS Firewall IDS

  • Configure, disable, and exclude signatures

  • Create and apply IDS audit rules

With the growing awareness of, and commitment to, network security as the way to secure business transactions—both internally and over the Internet—more and more businesses are recognizing that security concepts and features must be integrated into the network design and infrastructure.

According to Cisco advertising, 80 percent of the Internet backbone routers run Cisco IOS software, which makes it the most fundamental component of today’s network infrastructure. The Cisco IOS software-based security features, combined with the wide range of products supported, makes it a logical solution for any organization’s end-to-end Internet, intranet, and remote access network security requirements.

This chapter looks at the Cisco IOS intrusion detection system (IDS) features that are now a part of the IOS Firewall feature set on many router platforms. In the last four chapters of this book, you willlearn about the Cisco Secure IDS appliances that make up the first team in Cisco’s intrusion detection strategy.


The material in this chapter is only part of the exam objectives for the Managing Cisco Network Security Exam (MCNS 640-100), but reviewing it when you prepare for the IDS with Policy Manager Exam (IDS 9E0-572) will help you see how the products can be compared and used together.

Part III: Virtual Private Networks (VPNs)