samhain is a daemon that can check file integrity, search the file tree for SUID files, and detect kernel module rootkits (Linux only). It can be used either standalone or as a client/server system for centralized monitoring, with strong (192-bit AES) encryption for client/server connections and the option to store databases and configuration files on the server. For tamper resistance, it supports signed database/configuration files and signed reports/audit logs. It has been tested on Linux, FreeBSD, Solaris, AIX, HP-UX, and Unixware.
License: GNU General Public License (GPL)
Changes:
This version fixes a flaw that would allow clients to bypass authentication when connecting to the server. A new KernelCheckPCI option has been added to switch off checking of PCI expansion ROMs.
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03-05-2009
