How to run GUI admin tools remotely?

[Chris G]

On Sun, Jan 25, 2009 at 10:47:16AM -0500, Alex Katebi wrote:
>    On Sun, Jan 25, 2009 at 10:43 AM, Chris G <[1]cl at isbd.net> wrote:
> 
>      On Sun, Jan 25, 2009 at 10:40:35AM -0500, Alex Katebi wrote:
>      >    On Sun, Jan 25, 2009 at 8:17 AM, Chris G <[1][2]cl at isbd.net> 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
>      >
>      >    Do you have firewall running on the garage PC? If you don't know
>      then do
>      >    "apt-get Install lokkit" then run it and disable firewall. See if
>      that
>      >    helped.
>      >
>      No firewall, all of the LAN is behind a router which provides the
>      firewall against the 'outside'.
> 
>    Do you run "lokkit" to be sure?
> 
You don't seriously expect me to install 174Mb of software just to
confirm I don't have a firewall running on the system do you?  It's a
minimal server system with as few additions as possible. :-)

When I installed the system I specified 'no firewall' so I'm pretty
sure it really doesn't have any sort of firewall running on it. 
There's no iptables (or ipchains or similar) in /etc/init.d.

In addition a firewall that could distinguish between user X data and
root X data would be rather clever - see below, running user X
programs works fine.
>      >
>      >      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?
>      >
>      >      --
-- 
Chris Green