Samhain is a file system integrity checker that can be used as a client/server application for centralized monitoring of networked hosts. Databases and configuration files can be stored on the server. In addition to forwarding reports to the log server via authenticated TCP/IP connections, several other logging facilities (e-mail, console, tamper-resistant log file, and syslog) are available.
Tested on:
Linux
AIX 4.1
HP-UX 10.20
UnixWare 7.1.0
Solaris 2.6
The devel version has more advanced features, but not all options are thoroughly tested yet.