Hi TandK,

I know it is a bit late response, but it is quite easy to setup, even with the Brume in router mode. I have set it up as a wireguard server and DNS server with adGuard Home. It works like a charm:

If you want only the wireguard:

On the Brume:

  • activate the wireguard server
  • configure port forwarding in firewall for wireguard:
    protocol: TCP/UDP,
    ext zone: WAN,
    ext port 51820,
    int zone: lan,
    int IP <local IP address of Brume (in my case 192.168.8.1)>

On your normal router:
IP forwarding on the firewall:
protocol: TCP/UDP,
ext zone: WAN,
ext port 51820,
int zone: lan,
int IP < ext IP address of Brume (in my case 192.168.0.10 and make sure brume as a static IP on your lan)>
int port 51820

You also have to change the wireguard client config with your real wan ip address.

I hope it works for you.