dropbear | lightweight SSH2 server and client | Mehr ...
dropbear is a SSH 2 server and client designed to be small enough to be used in small memory environments, while still being functional and secure enough for general use. . It implements most required features of the SSH 2 protocol, and other features such as X11 and authentication agent forwarding. . See http://matt.ucc.asn.au/dropbear/dropbear.html