Checks that the most basic parts of a Remote Desktop connection succeedshttp://troels.arvin.dk/code/nagios/check_x224
The Remote Desktop protocol builds on a protocol called x224. This plugin
checks that the initial and most basic parts of a Remote Desktop connection -
the part which is specified by x224 - succeeds. I.e., it does a bit more than a
TCP connection test at port 3389.