Tiger
Tiger is a Linux security tool that can be use both as a security audit and intrusion detection system. Tiger can be used as an audit tool and a host intrusion detection system tool. Free Software intrusion detection is currently going many ways: network IDS, kernel, file integrity and log checkers and logcheckers. But few of them focus on the host-side of intrusion detection fully. Tiger complements these tools and also provides a framework in which all of them can work together.
