Artillery is a honeypot/monitoring/prevention tool used to protect Linux-based systems. Artillery will setup multiple ports on the nix system and if anything touches it will automatically blacklist them. In addition, it monitors the filesystem for changes and emails the changes back to you. It also detects SSH brute force attacks and automatically blocks them as well.

Download
svn co http://svn.secmaniac.com/artillery artillery/
Then python install.py

Artillery with Artillery from Hackett on Vimeo.