trace back route in linux

moked has asked for the wisdom of the Perl Monks concerning the following question:

Hi Monks,

I'm trying to write a script that will set your DISPLAY in a remote session.
However, I could not find a way to run a command (or a set of commands) that will trace back the original machine.
The idea is to trace back the original machine (no meter how many nested "rlogin" there are) and do: setenv DISPLAY <original machine>:view.
I succeeded with one login using the REMOTEHOST variable, but that won't work for nested "rlogin". Does anyone have an idea?

Please assist,
Thanks,
Moked

Comment on trace back route in linux

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Re: trace back route in linux by Eliya (Vicar) on Mar 01, 2012 at 09:57 UTC
It's probably a better idea (for various reasons — security being one of them) to use `ssh` instead, which provides X forwarding facilities over any number of hops. (And if performance matters, you might want to look into using NX (over ssh) instead.)	[reply] [d/l]
Re: trace back route in linux by JavaFan (Canon) on Mar 01, 2012 at 09:52 UTC
If someone uses `rlogin` on box A to log in to box B, and then does an `rlogin` into box C, you cannot retrieve 'A' from C without going into B.	[reply] [d/l] [select]