We have a 2 backup machines that we use to manage via Remote Dektop Connection; Suddenly one of them can not be reached anymore by RDC. The other one is still accessible. I can ping the first one, even managed to restart it with the shutdown /r /computer commandline, but no way to access it on RDC.
Any idea about what could have happened? How else could I take control over these remote servers ? The inaccessible one runs Windows Server 2008, the other one runs Windows 7.
EDIT: We got an operator to directly log on the machine at the datacenter, turns out that the firewall configuration wasn't allowing remote access. We have no idea what happened, maybe a windows Update set the firewall configuration back to a more secure one ?