Hi Boris,
it is ESX Version 5.5 commercial .
At the internal network it works without problems.
Now i try it from the DMZ (ESX) to the internal (Hyper-v).
I open the ports which you told me before.
TCP ports 443 and 80. For Hyper-V, it uses WMI to connect to the hosts.
WMI ports 49152 und 65535.