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NimbostratusNo RDP connection to Windows 2012R2 behind LTM
Hi experts,
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.
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.
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...
Thanks! Marcel
8 Replies
- The_Bhattman
Did you setup a NAT for inbound connectivity?
-=Bhattman=-
MarcelNL_153054Hi,
Almost forgot... No I did not setup an inbond nat, but I did add a Virtual Server listening on port 3389.
I figured an inbound nat would interfere with load balancing done by the virtual servers on port 80 and 443. Am I mistaking?
- MarcelNL_153054
I seem to be runnin 9.2.1 (no maintenance contract Unfortunally)
- The_Bhattman
Did you run a TCP trace to make sure it's going through the F5?
-=Bhattman=-
- MarcelNL_153054
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?
If disable the VS for port 3389, the f5 is blocking the rdp connection.
- The_Bhattman
Have you checked if the load balancer has a known route towards the LAN side? How about the NAT and Port translations turned on on at the VS?
-=Bhattman=-
- MarcelNL_153054
How do I check the route towards the lan side?
The node is serving web pages to an external client over port 443, so I assume the routing is ok. We are currently not restricting any ports...
- The_Bhattman
Is it possible for you to provide a diagram of your topology?
-=Bhattman=-
