This logs and notifies you of portscans run against your host. Some kinds of D.o.S attacks might also get logged.
You can download it from the following link: https://packetstormsecurity.com/files/download/12699/detect-scans-060.tar.gz
Source: https://packetstormsecurity.com/files/12699/detect-scans-060.tar.gz.html

