How safe is your network? Intrusion Alert: an Ethical Hacking Guide to Intrusion Detection provides an in-depth look at the intrusion detection systems that are currently available to help protect your networks from cyber criminals. The book begins by explaining various security concepts and the basics of security attacks, and then goes on to provide an introduction intrusion detection systems (IDS), how these systems work, and principles of IDS and the IDS architecture. The second section of the book deals with the installation and configuration of various IDS tools including tcpdump, ISA Server 2004 and Snort. Readers learn to implement these products, understand essential administration and maintenance tasks, and fine tune and use the data they provide appropriately.