Artillery 0.1 alpha – New tool for Linux Protection by ReL1K. Features: If anyone decides to port scan or touch those ports, they are blacklisted immediately and permanently. It’s multi-threaded and can handle as many connections thrown at it. Monitor file integrity leveraging sha-512 database. Monitor files and keep track of all system files and if anything changes. Also monitors the SSH logs, and the event of a brute force attack, blacklists the host forever.
Source: https://thehackernews.com/2011/10/artillery-01-alpha-new-tool-for-linux.html