You may also want to take a look at the main sourceforge development page at http://www.sf.net/projects/sbd

Overview
Secure Back Door (SBD) is a tool that provides ultra-secure and minimal access to a computer, which allows you to run a single command based on a one time key. It is good if you don't want to have an SSH server running all the time, and only want to start it when needed. Because it is written in only a few lines of code, it is hoped that it will be less susceptible to security exploits than a program like SSH.

Protocol:PROTOCOL
Readme:README
Changelog:CHANGELOG
License:LICENSE

Downloads
The latest version of SBD is 0.5, which is still lacking a few features, but is considered usable, stable, and secure.
Source code in .tar.gz sbd-0.5.tar.gz
Source code in .zip sbd-0.5.zip
Windows binaries sbd-win32-0.5.zip

Questions or comments?
Please e-mail me: wilbjor@iit.edu