Hi everybody.

I follow the guide in the attached file to open a VPN Tunnel between two stations. In one side there is a S7-1500 CPU with a CP-1543-1 and one Siemens Router.

In the other side there is a S7-1200 CPU with a CP-1243-7 LTE to connect in internet.

The result is ok, so the VPN tunnel is correctly opened and the two stations are connected, but I can't communicate between them. 

If I insert a "PUT" instruction I have an error, because on the CP side i must use the public-static IP adress of the SIM card (172.18.51.xx) and in the other side I have the IP of CP-1500 (192.168.1.xx).

There is somebody that know a system to exchange data between stations with different IP's? Because the GET/PUT istructions require the same IP address...

Thanks