Snort is a free, open source network intrusion detection and prevention system capable of performing real-time traffic analysis and packet logging on IP networks. Initially called a lightweight intrusion detection technology, Snort has evolved into a mature, feature-rich IPS technology that has become the de facto standard in intrusion detection and prevention. With more than 3.7 million downloads and 270,000 registered users Snort, is the most widely deployed intrusion prevention technology in the world.|
This list encourages discussion of Snort rules/signatures, additions, etc.
More information can be found at Snort Mailing Lists.