How to run GUI admin tools remotely?

[Preston Kutzner]

On Jan 25, 2009, at 7:17 AM, Chris G wrote:

> I have a backup system in my garage on which I have installed xubuntu
> 8.10.  It would be really useful to be able to administer it remotely
> from my desktop system in my house (also xubuntu 8.10), but none of
> the GUI systems/services admin tools will work because of X security.
> I always get something like the following:-
>
>    root at garage:/usr/bin# services-admin
>    X11 connection rejected because of wrong authentication.
>
>    (services-admin:7307): Gtk-WARNING **: cannot open display:  
> localhost:10.0
>
> Running *user* programs remotely works fine so I have ssh running such
> that X is working OK.  I have also tried all sorts of 'xhosts +'
> commands on the local system such that there should be virtually no X
> authentication at all but I still get the above error.
>
> Can anyone suggest a way to do this?

How are you connecting to the server?  Are you using SSH with the -X  
switch?  Also, how are you trying to start the admin apps?  You should  
use gksudo, or the KDE equivalent (depending on what is installed on  
the remote machine) instead of just sudo.  That might be part of your  
problem.  I also recommend using the -C switch, which compresses the  
data over the SSH session.  I've been able to run remote admin GUI  
apps using X forwarding over SSH over the internet without issues.
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