SNORT® is an open source command-line network intrusion prevention system capable of performing real-time traffic analysis and packet logging on IP networks. Snort can perform protocol analysis, content searching/matching and can be used to detect a variety of attacks and probes, such as buffer overflows, stealth port scans, CGI attacks, SMB probes, OS fingerprinting attempts, and much more. Snort is comprised of two major components: (i) a detection engine that utilizes a modular plug-in architecture (the “Snort Engine”) and (ii) a flexible rule language to describe traffic to be collected (the “Snort Rules”).

New in this version:
The Snort 3.0 architecture consists of two primary components: a software platform called the Snort Security Platform (SnortSP) 3.0, which is shipping in beta form in this release, and traffic analysis engine modules that plug into SnortSP. This beta test release contains one engine module which contains the Snort 2.8.3 detection engine implemented as a SnortSP engine module. SnortSP is an open-source platform for running packet-based network security applications. It provides many of the common functions required by programs that deal with packet processing such as configuration loading, event generation and traffic logging, data acquisition, protocol decoding and validation, flow management, and more.

Requirements:
OS X 10.1-10.5