Ross Williams writes: "FreeVeracity is a new free intrusion detection tool for free platforms (GNU/Linux, FreeBSD, NetBSD, OpenBSD, etc.) that uses cryptographic hashes to detect file changes that may indicate a network intrusion. FreeVeracity can be run standalone or in a client/server configuration (on TCP port 1062) that enables you to monitor the integrity of hundreds of computers from a single point. FreeVeracity is also an excellent general-purpose data integrity tool with over ten different applications. FreeVeracity is released by Rocksoft, vendor of the Veracity data integrity tool used to secure the networks of leading global companies in finance, communications, transport, aerospace, power generation and defence. FreeVeracity is released under the Free World Licence which provides all the usual free-software freedoms, but for free platforms only." Looks useful.