Windows Remote desktop suddenly stopped allowing connections

Say, we are running Windows2008 server R2 and with no known reason, remote desktop stopped working. I rebooted the server and this did not help. I disabled the Public firewall and remote desktop was able to connect again.

What ports do I need to allow and what could have caused this? No changes were made to Firewall by ourselves.
shaunwinginAsked:
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
Windows Firewall or Cyberarms?
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aboo_sCommented:
port 3389
You need to check that there is no rule on firewall to stop the application it's self from communicating outside the network.
You could first set up the port and try it out, if it doesn't work then you keep on debugging.
As for what caused it, well it could be anything really. Upgrade, accidental reset, virus ..whatever! Maybe too many tries to hack into the system through this port triggered some protection machanism or something.
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
First check if the particular firewall rule for Remote Desktop is enabled. If yes, sometimes it helps to uncheck and rechecked the rule.
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shaunwinginAuthor Commented:
Was most likely this
Maybe too many tries to hack into the system through this port triggered some protection machanism or something.
tx
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shaunwinginAuthor Commented:
Say, Cyberarms seems to be the culprit - but showing no current locks.
What can I do?

What is the name of the Remote Desktop .exe to add entire application to firewall?
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QlemoBatchelor, Developer and EE Topic AdvisorCommented:
It is part of the service host: C:\Windows\System32\svchost.exe -k NetworkService
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shaunwinginAuthor Commented:
Remote Desktop (TCP-In) created by System allows port 3389. Disabled and enabled - same issue persists.
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shaunwinginAuthor Commented:
Windows Firewall

I've also noticed a 2nd Program is not getting access - seems more generalized issue.
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shaunwinginAuthor Commented:
uninstalled Cyberarms and resolved
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