remote X

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Author: Bryce C
Date:  
Subject: remote X
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I'm not quite sure what you were trying to do with the echo lines but
here's the simplest example I can think of.
On client. `ssh -X server` `xlogo`
If you don't get a nice little popup X, then run `echo $DISPLAY`. You
should get something like "localhost:10". If you don't, the server has
disabled X forwarding in SSH, which overrides the -X flag. Just edit
then the /etc/ssh/sshd_config and find "X11Forwarding" and change it to
"yes". My section on X looks like this:
<snip>
X11Forwarding yes
X11DisplayOffset 10
X11UseLocalhost yes
</snip>
Once you've made that change, `/etc/init.d/sshd restart`, logout and ssh
back in again just like before. Now try `xlogo` and `echo $DISPLAY`.
Let's hear it for SSH X11 forwarding.
Also, I'm not sure there should be a space between the "+" and the IP.
If you really insist on doing this the hard way every time, try `xhost
+192.168.2.100` instead. That should grant access for your client to the
X (X is backwards. IP should be the IP of the computer trying to access
X, i.e. server from which xterm is being launched), 192.168.2.100, to
access the X server that is currently running.
--=20
Bryce C <>
CoBryce Communications

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Subject: Re: remote X
From: Craig White <>
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Date: 25 Jul 2003 09:06:42 -0700
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On Fri, 2003-07-25 at 00:58, der.hans wrote:
> Am 25. Jul, 2003 schw=C3=A4tzte Craig White so:
>=20
> > I have VNC up, running and working just fine but I think that I would
> > like to play with xwindows without the VNC. I am considering that this
> > is a trusted network...
> >
> > I have tried...
> >
> > on server - 'xhost + 192.168.2.100
> >
> > and from client - logged in via ssh as a user and then...
> >
> > 'xterm -display 192.168.2.100'
> >
> > and gotten an error (something like, unable to open display)
>=20
> There's a much better way.
>=20
> Make sure you have xauth on the remote machine. Make sure X11 forwarding =
is
> enabled in sshd on the remote machine. ssh making sure to allow X11
> connections ( -X ). If you 'echo $DISPLAY' on the remote machine at that
> point you should see the remote machine's name followed by a colon, a
> number, a dot and 0.
>=20
> $ echo $DISPLAY
> localhost:10.0
>=20
> This setup will tunnel everything over the encrypted ssh connection.
-----
I'm sure that there's a lot of wisdom in this message but the intended
recipient doesn't quite get it which is why I am more than receptive to
a 'howto" point.

Server is RH9
Client is RH8
xauth is indeed installed on both
X11Forwarding is enabled in /etc/ssh/sshd_config on both

I had figured it to be easier to learn to do this without ssh to
minimize elements to configure and would have added ssh to the
configuration after I got it working.=20

Anyway, what I have done this far is... 

from cli on client...
Server - logged in via ssh, as root 'xhost + 192.168.2.100'
            su - username then 'xterm -display 192.168.1.100'


got the message unable to open display

tried 'echo $DISPLAY 192.168.2.100'
and 'echo $DISPLAY 192.168.2.100:0'
and 'echo $DISPLAY 192.168.2.100:1'

none workee

I don't get it.

Thanks,
Craig

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