Hi,
what would be the correct way, if it's possible, to install plugins offline?
thanks
Yes, you can either host a private mirror or you can also download single pkg files and install them on CLI.
is there a guide for either of these solutions available?
Mirror:
https://forum.opnsense.org/index.php?topic=12732.0
Manual:
Go to the repository, download the pkg files and afterwards install them with pkg.