One strange behaviour:
if I try a port forward, for example ssh -p 3000 -x -L 192.168.x.y:3389:localhost:3389 firstname.lastname@example.org, using Local Port Forwarding of PAC the real command executed I can see through ps is
sh -p 3000 -x -L 192.168.x.y/3389/localhost/3389 email@example.com
/ instead of :
So It doesn't work.