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Re: how can I set $REMOTEHOST ( so I can set $DISPLAY with sshd w\X11 forwarding)


On Sat, 7 Aug 2004, Brian Dessent wrote:

> peter waltman wrote:
>
> > yeah.  pretty much.  I've set the "ForwardX11 yes" in the sshd_config
> > file on the server I log into and I've also set it in the ssh_config
> > with the client I'm using to log into it.
> >
> >    piano{pwaltman}51: ssh -X grad107m
> >    pwaltman@grad107m's password:
> >    Last login: Fri Aug  6 19:16:42 2004 from lin04.eecs.tufts.edu
> >
> >    pwaltman@GRAD107M ~
> >    $ echo $DISPLAY
> >    127.0.0.1:0
>
> It could be that if DISPLAY is set before you run ssh -X then ssh won't
> change it.  Try unsetting DISPLAY first.

This is wrong.  "ssh -X/-Y" will not enable X11 forwarding *unless*
DISPLAY is set in the local shell.

> Also, make sure there's nothing in your profile/bashrc stuff on the
> remote host that messes with DISPLAY.

This, however, is sound advice.  Try running ssh without the -X flag (or
even with a -x flag) and see if DISPLAY is still set.

> > if $?REMOTEHOST
> >    export DISPLAY=$REMOTEHOST:0.0
>
> If you do this your X session is no longer tunneled through SSH, and
> thus not secure.

Also correct.
	Igor
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