No RDP connection to Windows 2012R2 behind LTM

Question

Hi experts,&nbsp;
I have a lab setup with a LTM 1500 running 9.4.5 and two VMs running Windows 2012R2.
Load balancing web traffic works fine. I have also setup a NAT so both servers can initiate outbound traffic for updates etc.&nbsp;
When I want to use RDP to manage the servers, the connection is never established. RDP is running and the connection is initiated but is simply never established.&nbsp;
What could be wrong here? Where could I look for missed settings?
  hope some of you experts have some pointers for me, I am relatively new to F5...&nbsp;
Thanks!
Marcel&nbsp;

the_bhattman · Answer

Did you setup a NAT for inbound connectivity?&nbsp;
-=Bhattman=-&nbsp;

marcelnl_153054 · Answer

Hi,&nbsp;
Almost forgot... No I did not setup an inbond nat, but I did add a Virtual Server listening on port 3389. &nbsp;
I figured an inbound nat would interfere with load balancing done by the virtual servers on port 80 and 443. Am I mistaking?&nbsp;

marcelnl_153054 · Answer

I seem to be runnin 9.2.1 (no maintenance contract Unfortunally)&nbsp;

the_bhattman · Answer

Did you run a TCP trace to make sure it's going through the F5?&nbsp;
-=Bhattman=-&nbsp;

marcelnl_153054 · Answer

The ltm is used as a reversed proxy with a firewall on each side. On the wan side I can see packets leaving the firewall to the F5. I don't see traffic on port 3399 leaving the lan side. How do I tin a trace on the ltm?&nbsp;
If disable the VS for port 3389, the f5 is blocking the rdp connection.&nbsp;

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No RDP connection to Windows 2012R2 behind LTM

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