I have a simple LAN network with two devices, A:192.168.1.180 and B:192.168.1.181, connected via a wired connection. I need to create an emergency VPN connection between these two devices over the internet using the GSM network. I have two RUT200 routers.
Is it possible to configure them in this way?
Thank you all in advance,
The VPN connection can definitely be established. However, as they are both in the same subnet, I’d suggest using either a L2 VPN like OpenVPN TAP, or L3 VPN and address each device using their respective tunnel IPs with port forward configured.
However, the first I’d suggest trying to setup a L2 OpenVPN tunnel by following the instructions provided here: Connecting two same subnet office networks using OpenVPN bridge (TAP) - Teltonika Networks Wiki
Instead of TLS, Static Key authentication could be used. It’s much easier to setup, but a little less secure.
Let me know if you encounter any difficulties along the way!
Thank you for the quick response. Yes, I tried that setting. However, I’m not sure if I explained or connected it correctly. The backup connection is supposed to switch automatically between the wired network and VPN (GSM). I have try connection like in the picture. I briged all devices on routers eth0.1, eth0.2 and tap0.Sometimes it is working and sometimes not.
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