Rsh Enumeration
> rsh host [-l username] [-n] [-d] [-k realm] [-f | -F] [-x] [-PN | -PO] command
Rsh Brute Force
> rsh-grind ( http://pentestmonkey.net/tools/rsh-grind/ )
> Hydra ( http://freeworld.thc.org/ )
> medusa ( http://www.foofus.net/jmk/medusa/ )