OPNsense WireGuard as client to route traffic to another WireGuard server

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Is there any tutorial or guide that explains clearly what I need to do using OPNsense as WireGuard client?

With my OPNsense I would like to connect to another Wirguard server (OpenWrt) like it feels I am inside the OpenWrt network.

`wg show` shows already the successful handshake. I guess I need to add firewall rules and/or more to talk to the remote network. I tried different things. Tried to combine different manuals but no luck so far and I am stuck now...

BTW: On WireGuard server side (OpenWrt) all is fine. I used it all the time in the past and when using the same with my notebook, I can easily connect and reach everything.

Could somebody help me out?


- The Road Warrior Setup is OPNsense as Wireguard server.
- WireGuard Site-to-Site Setup - I dont want to let the remote network coming in my network. And it described both side as OPNsense and not one for e.g. OpenWrt