There is a GPL secure shell called lsh under development. See http://www.net.lut.ac.uk/psst/ I have not tried it and it does currently have the warning
This directory contains snapshots of lsh development. lsh is a free implementation of the ssh protocol. lsh is far from finished; don't expect these snapshots to compile or work, and even if they appear to work, beware that lsh currently does *NOT* provide any security at all. /Niels Möller
Looks like several people had the same idea try: http://www.win.tue.nl/games/roguelike/
This directory contains snapshots of lsh development. lsh is a free implementation of the ssh protocol.
/Niels Möller
lsh is far from finished; don't expect these snapshots to compile or work, and even if they appear to work, beware that lsh currently does *NOT* provide any security at all.
Is this an admittion by M$ that NT is insecure ? :-)
Surely it would be in their interest to make their current products more secure