Re: Question regarding using RSH protocol (not binary) over SSH



"maaxiim" <maaxiim@xxxxxxxxx> writes:

Hello,

I have a rather awkward situation and was hoping someone here might
have some insight.

One of our customers has recently locked down all of their internal
servers to use SSH instead of RSH and so forth. We utilize a third
party automated testing tool to generate heavy loads on their system.
Unfortunately, this third party tool makes use of the raw RSH protocol
to connect to the remote system and launch individual test controllers.
The RSH protocol is _hardcoded_(!) into their controller app.

Well, change it.
They certainly should NOT be allowing rsh into their systems. It is highly
highly dangerous.

hardcoded into their controller app? That sounds highly unlikely.
It may be hardcoded into your testing app, but I doubt it is in their
controller app.



Since the server no longer listens on 514, I was wondering if it is at
all possible to somehow
operate SSH in a port forwarding mode, but not forwarding to another
socket on the remote machine. For example

MachineA:Load Controller -> RSH -> MachineB:514 -> launches command via
rsh



You can have ssh listen on port 514 if that helps.



The remote command then communicates back to the Load Controller over
the established connections stdout/stdin

Is it possible for me to have SSH listen on 514 and somehow process the
RSH protocol as though it were RSH on the remote machine:

MachineA:LoadController -> RSH -> MachineB:514 -> launches command via
ssh

Change the LoadController.



Ironically, they are not concerned that its still RSH protocol coming
into SSH...

Hopefully that is not too convoluted, TIA

maaxiim

.



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