CCTDE is designed as an analysis backend for the Snort NIDS tool and focuses on providing a way to register and disclose information leading to the detection of unauthorized tunnels and covert channels.
You can download it from the following link: https://packetstormsecurity.com/files/download/33131/cctde-0.2.tar.gz
Source: https://packetstormsecurity.com/files/33131/cctde-0.2.tar.gz.html

