we have following setup
Fritzbox - VPN Port forwarding to Synology Diskstation with VPN Server (LTPS2/IPsec with key)
@at pur boat Teltonika rutx11 with mobilSIM for WAN
A surface as WLAN/LAN in the rutx11 Network. The surface can`t connect to the VPN Server. From other Hotspots it works absolut fine. . but when the surface is connected to the rutx11 ot doesnt`t work. i have tested a putty connection to the rutx11and stopped the firewall but, it doesn`t work. idea`s? The Android phone can (in WLAN from rutx11) can connect to the VPN.