Remote login - xdm

[Basil Fowler]

Remote login requires two files to be altered, namely /etc/X11/xdm-config 
and /etc/X11/Xaccess.  By default, access by remote X servers is disallowed.

In /etc/X11/Xaccess, uncomment the line

#*      #any host can get a login window 

In /etc/X11/xdm-config, comment out (with a ! ) the line

DisplayManager.requestPort: 0

Once this is done, you can go to your remote terminal and  enter on the 
command line:

/usr/X11R6/bin/X -query <name|ip no of computer into which you want to log 
into>

You should get the kdm or xdm login screen.  

I use this for my spare computer when I want to use it as a remote terminal.

For full details consult:

http://www.linuxworld.com/story/32827.htm

Hope this helps

Basil Fowler


On Sunday 26 December 2004 18:28, Larry Howe wrote:
> Does anyone know how to configure / use remote login (xdm). I already have
> Desktop Sharing working, but it isn't quite what I want. There is way too
> much network traffic, and I have some reliability problems. I use remote
> login routinely at work, and it works well, so I'd like to try it at home.
> I checked the docs and have made some progress, but I can't seem to get it
> to work. Here is what I have configured / tried so far. Any help
> appreciated.
>
> Also, are there any other better tools for this task?
>
> Larry Howe
>
> On the client: ====================================
>
> Configuration: ========
>
> in /etc/opt/kde3/share/config/kdm/kdmrc, I added a single line for
> LoginMode.
>
> [X-:*-Greeter]
> AdminSession=YaSTadminSession
> LoginMode=DefaultLocal
>
> Usage: ============
>
> After changing kdmrc, on the X login screen, I now can go Menu / Remote
> Login. That brings up a new screen, titled XDMCP Host Menu. I typed the
> server name in Host and clicked Add. Now the server appears in the list,
> showing the host name, how many users are currently logged in, and the
> system load (=> it's communicating with the server).
>
> If I select the host and click Accept, the screen flashes a few times, the
> stopwatch shows for several seconds, then the _local_ X login screen comes
> back again.
>
> Logs: =============
>
> kdm.log:
>
> Fatal server error:
> XDMCP fatal error: Session declined No valid address
>
> /var/log/messages:
>
> Dec 26 10:52:39 pickle kdm: :0[5302]: pam_unix2: session started for user
> lhowe, service xdm
>
> On the server: ===================================
>
> Configuration: =========
>
> Yast / Security and Users / Security Settings / Next / Next / Next / Allow
> Remote Graphical Login (the help for this option says "Checking this allows
> access to a graphical login screen for this machine over the network.
> Remote access to your machine via xdm might be a security risk."
>
> Logs: ==============
>
> I'm not sure whether anything is going in the logs or not. Sometimes I see
> nothing in the logs. Other times I get, in kdm.log:
>
> SetClientVersion: 0 8
> SetGrabKeysState - disabled
> AUDIT: Sat Dec 25 15:08:27 2004: 4783 X: client 27 rejected from local host
>   Auth name: XDM-AUTHORIZATION-1 ID: -1
> SetGrabKeysState - enabled
> SetClientVersion: 0 8
> SetGrabKeysState - disabled
> SetGrabKeysState - enabled
> SetClientVersion: 0 8
> SetGrabKeysState - disabled
> SetGrabKeysState - enabled
> SetClientVersion: 0 8
> SetGrabKeysState - disabled
> SetGrabKeysState - enabled
>
> ==============================================
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