You can also have the X server connect to xdm(1) or dtlogin(1X) using XDMCP. Although this is not typically useful as it doesn't allow xdm to manage the server process, it can be used to debug XDMCP implementations, and serves as a sample implementation of the server side of XDMCP. The following options control the behavior of XDMCP.
Enable XDMCP and send Query packets to the specified host.
Enable XDMCP and broadcast BroadcastQuery packets to the network. The first responding display manager will be chosen for the session.
Enable XDMCP and send IndirectQuery packets to the specified host.
Use an alternate port number for XDMCP packets. Must be specified before any
Xdmcp has an additional display qualifier used in resource lookup for
When testing
Yet another XDMCP specific value, this one allows the display manager to identify each display so that it can locate the shared key.
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