@Kevin_Z The Huawei is a B593U-12: I already tried several ports. 443, 8080, 21, 20 The SIM card provider is SPUSU and uses the net from Drei.

@Kevin_Z I just verified the IP address. It is the same. Yes it is possible to access in local network. I use the service to have access to my home automation. Visualization as well as programming. I...

I want to configure portforwarding with virtual server as usual but port is not open. I tested it with "https://www.yougetsignal.com/tools/open-ports/" Using the same SIM (with same public IP) with...