13.3
13.3 Enabling Remote Sessions 177
XDM
XDMCP is enabled or disabled by an entry in the xdm-config file (typically located at
/etc/X11/xdm/xdm-config). The entry of interest is DisplayManager.requestPort, usually
configured like this:
DisplayManager.requestPort: 0
To enable XDMCP, change the port number to 177:
DisplayManager.requestPort: 177
You should also check your Xaccess file (usually /etc/X11/xdm/xaccess) to ensure that
it has two lines like this:
*
* CHOOSER BROADCAST
The first line enables any X server to connect directly to this XDMCP server (Section
13.4), and the second line enables indirect queries (Section 13.6).
Finish by restarting XDM.
KDM
KDM uses the kdmrc file (usually /etc/X11/xdm/kdmrc or /opt/kde3/share/config/kdm/
kdmrc) to control remote sessions. In this file, there is an [XDMCP] section, which typically
looks like this:
[Xdmcp]
Enable=false
To enable XDMCP, simply change the value to true:
[Xdmcp]
Enable=true
The Xaccess file must be set up in the same way as for XDM.
Finally, restart KDM.
GDM
GDM??™s support for remote sessions is controlled by an entry in the [xdmcp] section of
the local GDM configuration file (/etc/gdm/gdm-custom.
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