| SecurityFocus: Intrusion detection focus area; designed to assist discussion on security related topics, and provides a comprehensive database of security knowledge and resources. It also hosts the BUGTRAQ mailing list. |
| COAST Intrusion Detection Hostlist: Clearinghouse listing of many of the Internet resources associated with intrusion detection and prevention systems. Includes inventories of commercial products, research projects, and other IDS-centric material. |
| DShield: Distributed Intrusion Detection System. Accepts firewall log excerpts from around the world and you can browse through activity reported to the system. Features a list of the "most wanted" abusive IP addresses. |
| Internet Storm Center: Operated by the SANS Institute, the ISC provides a user-supported infrastructure for intrusion detection systems to share information about ongoing attacks that span countries, networks, and administrative boundaries. |
| Intrusion Detection System Resources: Comprehensive collection of tutorials, product reviews, general information and other resources dealing with Intrusion Detection and Prevention Systems. |
| Linux Security IDS: An excellent source of IDS-related information, including security best practices, audit procedures, penetration testing, community information and more. |
| Michael Sobirey's IDS Page: An excellent index of most currently available IDS and IPS products, including vendor contact information. |
| myNetWatchman.com: Intrusion Reporting and Response. Users forward firewall logs that are aggregated and analysed to identify incidents that are reported to the responsible party. |
| Security Resources for Windows Network Administrators: Provides books, articles, software and other information on penetration testing and other security issues. Geared toward Windows NT/2000/XP Network Administrators. |
| Talisker Security Wizardry: Large index of computer security resources, including a glossary of Intrusion Detection and Prevention systems. |
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