First install the os-upnp plugin from the GUI: system ⇒ firmware ⇒ plugins ⇒ install os-upnp
Next, ssh into the OPNSense box and goto the CLI and run the following commands
fetch -o /usr/local/etc/pkg/repos/mimugmail.conf https://www.routerperformance.net/mimugmail.conf(Install the community plugin repo)pkg update && pkg install tailscale(Install Tailscale)service tailscaled enable(Enable Tailscale service on restart)service tailscaled start(Start Tailscale service now)tailscale up(Enable the Tailscale interface)
After running the tailscale up command above, you will be given a URL to visit to link the device to your tailscale account.
Return to the GUI and complete the following
- Goto interfaces => assignments (and under new interface) assign tailscale0 to an interface
- Refresh the gui screen, goto Interfaces => whatever you assigned to above. I would change the interface name to TAIL
- Goto Services => Universal Plug and Play => settings Firewall => rules => Tail and add allow rule
- Reboot
After reboot your Tailscale tunnel should be up!
Nicholas Saraniti 