Get access to local ethernet Devices over Wifi internet with different IP's

Hello togehter,

im looking for solutions to get access to my local network (10.180.210.x) over the router GL SFT1200 from outside the network. The router gets internet from a different wifi(GL Router gets DHCP IP: 192.168.14.211, subnet 255.255.192.0,Gateway192.168.0.1).

The wifi devices that are also connected to the gl router get internet and access to local network (for example my laptop gets a 10.180.210.17 IP).

The ethernet devices that are connected to the gl router dont get internet, but still access to local network (set up static IP 10.180.210.28 for example)

my first try was to install teamviewer on the .28 PC, but because it does not get any internet (for whatever reason?) it dont work.

then i tried OpenVPN and Wireguard but for both it does not work (whenever i start the VPN i dont have any internet access on my laptop anymore)

then i tried Wireguard over astrorelay. i run the script and run logread, but it says "

Tue Jan  9 06:01:10 2024 daemon.info arc[30613]:
Tue Jan  9 06:01:10 2024 daemon.info arc[30613]:  AstroRelay Client v1.0
Tue Jan  9 06:01:10 2024 daemon.info arc[30613]:  ----------------------
Tue Jan  9 06:01:10 2024 daemon.info arc[30613]:  Invalid security key length, 256 characters required
Tue Jan  9 06:01:10 2024 daemon.info arc[30613]:
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:  AstroRelay Client v1.0
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:  ----------------------
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:  Watch dog started
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:   * Press Ctrl + C To Shutdown *
Tue Jan  9 06:01:10 2024 daemon.info arc[30646]:
Tue Jan  9 06:01:12 2024 daemon.info arc[30646]:  Connection failed, retrying every 2500ms

Tue Jan  9 06:01:13 2024 daemon.err gl_mqtt_service[3686]: timestamp invalid
Tue Jan  9 06:01:13 2024 daemon.err gl_mqtt_service[3686]: utils_NLB failed!

Anybody an idea?

Router: GL-SFT1200
Mode: Router
FW: 3.216

I would go with ZeroTier or Tailscale.

Does need forward port for Teamviwer? I don’t think so, it is P2P system.

No port forwarding needed. But i cant figure out why my Ethernet devices dont get internet over the connected WiFi from the Router (wifi-sta).

The STF1200 does not support ZeroTier. Its listed as a application which can be intalled but the GUI Menu does not show it up. I will give Tailscale a try.

You can install it via SSH, if you like to.