Introduction

In this chapter, you learn about intrusion-detection and prevention methodologies and utilities. In addition, you learn about the best ways to both prevent and, if need be, handle intrusion into your networks using proven practices and useful utilities, such as honeypots, firewalls, network sniffers, and Intrusion Detection Systems software. Using Intrusion Detection Systems is becoming more and more popular given its constant refinement and wide availability on the market. It is important to know what systems are available, which are most effective, and which to avoid. This chapter helps you better understand Intrusion Detection Systems and other complementary software and utilities to best prepare you for securing your network and servers.