I just made a video and posted it on YouTube. There is a fairly new Denial of Service Attack on Servers set up for Remote Desktop (RDP).
The attack sends a Buffer Overflow at Port 3389 and causes the Server to Crash.
Good Security Practice is to never access your servers over RDP, but utilize a VPN into your Network and then access the Servers through your internal network.
A fix-it from Microsoft is Available
If you are going to use it then make sure you apply this fix-it.