Since a few days I try to set up a WireGuard VPN server on my
GL-MT300N-V2 (firmware version 3.025). I hope somebody can help me with this issue.
I want to have worldwide access to a smarthome device in the local network. This device is connected with a LAN cable to my GL-MT300. The GL.inet-router (router mode) is a client of another router which connects to 4G and has a DHCP server running. I setup up a port forwarding on router #1 (port 51820 to IP 192.168.1.166 - this is the static IP of GL-MT200N in LAN of router #1).
I set up a WireGuard server and on my mobile phone I made a WireGuard client connection (see qr code down - the keys and public IP are anonymized), but I have no access neither to the local network, nor the smarthome device, nor the internet (even handshake fails). So no success.
Thank you very much for some support!
Johnex Edit (decoded the QR code for easier support):
[Interface] PrivateKey = CCXuGSIjrimlDXG3mJmb8aaaaaaaaaaaaaaaaaaaa38= ListenPort = 27166 Address = 10.0.0.4/32 DNS = 220.127.116.11 [Peer] PublicKey = kUTy4LapzIBhbaaaaaaaaaaaaaaaaaaaaI6ppfyb6x4= AllowedIPs = 0.0.0.0/0 Endpoint = 89.15.xxx.xx:51820 PersistentKeepalive = 25