Mikrotik as Wiregard Gateway only

Hey folks,

I have a Mikrotik Wireguard server running behind a Fritzbox. Connections from my phone to the server are working flawlessly. I then thought I could configure a site-to-site VPN connection with Wireguard. So I grabbed my Hex router and configured Wireguard to establish a connection to my server. This time, the Hex is behind an OPNsense Firewall. From a connection standpoint, I can ping everything on the server side.

The problem may already start here. The Hex router is configured as a router with a Wireguard interface and is connected over it’s WAN interface to my local network. Static Routes on my OpnSense Firwall allow connections to everything on and behind the Wireguard server.

Unfortunately, ssh connections are getting disconncted after 20s or so. Same goes for webinterfaces but these sometimes just reload or are just working.

I have the feeling that is configuration is only somehow working. Any ideas how I could do it the right way? My goal is, to use my hex as a gateway to everything on the wireguard interface.

Thanks and Cheers!

Draw diagrams to show us more clearly what you mean and also both configs server peer for handshake and the client peer router (hex) for handshake