I have a RutX50 installed in a campervan, which is Lan3 with IP range 192.168.70.x. A Victron GX, a Raspberry with Docker (Home Assistant and Nginx Proxy Manager for port forwarding and encrypted access from outside) and various Shelly devices are connected to this Lan3.
In my house I have a Fritzbox 7490 on the German DSL telecoms network as LAN1 with IP range 192.168.50.x. The camper is in front of the house, LAN3 is connected to the Internet via WLAN from LAN1.
The Raspberry with Homeassistant and the Cerbo GX should be accessible from LAN1, also should be access via ssh between Lan1 and Lan3 in both directions.
I configured a static route from LAN1 to LAN3 in the AVM 7490 and a static route to LAN1 in the RUTX50. As a result, I was able to ping all devices in LAN1 from LAN3 (RUTX50). From LAN1, I was able to ping RUTX50 at its IP 192.168.70.1. All other devices didn´t answer to ping, for all other IP’s I´ve got the error message:
Response from 192.168.50.35: Destination port not reachable.
IP 192.168.50.35 is the gateway in LAN1, the IP with which the Wifi of LAN3 is connected to LAN1.
I have also tried to establish a connection via Wireguard following the Wiki. After configuring and activating Wireguard in the RUTX50, the Teltonika was no longer accessible, I had to perform a factory reset and reconfigure the router.
The Wikis and Howtos have left me more confused than knowledgeable. I would be great if someone could help me with a few keywords or links, for example which protocols or techniques I can use to implement the configuration.
Thank you very much!