External RDP to Windows 8 client not working

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  Hello,

  I have a strange issue.

  I have a fixed-IP, and I can connect (RDP) all my servers from the Internet (port redirection from ;3390-3500 to internal IP:3389).

  I recently installed a Windows 8 workstation and... I cannot access it from the Internet.

  However :
  - Internal RDP works fine
  - When sniffing, I can see the RDP-3389 packets coming (but the PC does not answer), the routing and port redirection is therefore fine
  - Windows 8 firewall is disabled
  - The same configuration works with W2012 servers

  What could be wrong ???

  Thanks in advance for your help

  Friday, October 3, 2014 12:28 PM