Rules Definition for an Anomaly-Based IDS Solution
- Information Security documentation, including a paper describing how to effectively use rule-based NIDS to perform anomaly intrusion detection.
- http://www.security-gurus.de/docs.php

Network-based intrusion-detection systems
- IDS coverage from Network World, including an in-depth review of eight IDS products, tips for deployment and false alarm reduction, terminology glossary, and related news stories.
- http://www.nwfusion.com/techinsider/2002/0624security.html

An Introduction to Intrusion Detection Systems
- Detailed introductory guide to intrusion detection systems, both host and network-based. The Dragon IDS Suite is used to demonstrate usage principles.
- http://www.intrusion-detection-system-group.co.uk

Raffael Marty: Intrusion Detection Resources
- A good overall collection of IDS resources including links to log analysis, honeypot, and other useful tools. Also includes information regarding the THOR and Odin IDS projects.
- http://security.raffy.ch/Intrusion_Detection.php3

IDS Evasion Techniques (Security Focus)
- Explanations of basic IDS evasion techniques as well as suggested fixes and countermeasures to such attacks. Topics covered include basic string-matching weaknesses, polymorphic shell code, session splicing, fragmentation attacks, and denial of service a
- http://www.securityfocus.com/infocus/1577