Dscan is a distributed port scanner which scans from many hosts, making it harder to detect. Uses a client / server model. Features many-to-one, many-to-many scans, stealthscans, authentication, ipfile support, and simple ids-techniques. Works under BSD and Linux.
You can download it from the following link: https://packetstormsecurity.com/files/download/25285/dscan-0.5.tar.gz
Source: https://packetstormsecurity.com/files/25285/dscan-0.5.tar.gz.html