XDMCP protocol – What and How
Okay, I will talk about XDMCP today. First we will see what is xdmcp protocol.
There is a nice article on what is XDM is <a href="http://en.wikipedia.org/wiki/X_display_manager" target="_blank">here
In very simple words, this a protocol to get the X Windows login to a remote system. The client sends the request to the server and server completes the requests. For this the server allows the clients to connect to XDMCP port. There are various ways the XDMCP works most common being indirect, direct and query. So basically if you are using a XDMCP clinet you will get the feeling of using the server directly with the GUI and all. (It is very similar to VNC but not same as VNC, see <a href="http://msmvps.com/blogs/rexiology/archive/2006/12/19/windows-x-client-server-to-connect-linux-server-xdmcp-and-vnc-approaches.aspx" target="_blank">here for the differences in ssh, vnc and XDMCP.)
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