We figured that our ADSL modem has bridging.
1- We have added another physical ethernet on our Windows 2016 server
2- We set ADSL modem to bridge to our Windows 2016 Server second ethernet.
3- Hyper-V set so that second ethernet is assigned to NethServer.
4- NethServer set for PPPoE. After that our fixed IP number is displayed on that second nic.
5- We did not change any setting for our OpenVPN server.
After having RED and GREEN ethernets visible in NethServer we are able to ping any computer in location A from location B. We can establish successful RDP connections from location B.
Now we are to setup all routing and IP phone settings that were existing on our ADSL modem. No complaints about that though.
In the mean time, I wanted to test suggestions in below thread (putting RDP to TCP only mode).
I couldn’t do that test as too many people involved in and configuration changed more than a couple times.
Just posting in here because I find it relevant. Reason for me to think it is relevant is because I can have communication over OpenVPN until I can enter my user password. If there was no communication, I couldn’t be able to get to login screen of RDP.
There is another location with identical configuration. I did setup NethServer there. Unfortunately, I could not test results there as ADSL modem has no support for static routes.
Thanks for all the help.
Regards,
Ertan