OSSIM aims to unify network monitoring,
security, correlation, and qualification in one
single tool. It combines Snort, BASE, NTOP, Nagios, nmap, nessus, and rrdtool to provide the user with full control over every aspect of networking or security.
Information regarding Project Releases and Project Resources. Note that the information here is a quote from Freecode.com page, and the downloads themselves may not be hosted on OSDN.
