Concerning the ethernet ports, the system has a hub (4 ports), a plc and a gateway.
Also i use an access point because i use the wireless feature to connect a wireless device. ( in case there is a TELTONIKA device with wifi, with this option i will remove the access point).
I will need only one SIM and i want access to WEBUI and TIA portal (siemens program for PLC), also to gateway using PuTTY.
The PLC is using Profinet and also open ethernet protocols.
If i can achieve an Virtual Lan connection i will not need port forwarding.
Thanks for you response.