Hello @vizo,
Looks like this has been already asked and commented some time ago:
A similar topic (a different tool, but with a similar approach), has been covered at the beginning of the year:
To be fair, and like my colleague Victor mentioned, we don’t have official support for Opsense. It looks like the installation might be similar to other platforms (like this video on Youtube):
Other than that, we cannot help you much.
Cheers,