I've been having a look at port redirection with netcat and am having some problem getting duplex communication accross the link. What I have so far done is outlined below:

source box nc -nvv 80
redirector box nc -lvvp 80|nc -vv 555
target box - nc -lvvp 555

so that I can connect to the redirector on port 80 which will then forward me on to port 555 (or whatever) of the target server.

I can send text one way ie to the target successfully but not back from the target. Similarly I can't get a shell with "-e /bin/bash" due to nothing coming back.

I've had a look on the net but not found anything useful that has worked for me yet. I do not have the -b (broadcast) option as one of the links I read suggested.

Anyone have any ideas?