I am new to the PFSence world, until now my proxy was a nignx docker on the server.
Now I switched to HAProxy on the PFSence, this gives advantages for the internal and external frontend.
My question is how do I forbid the subdirectory /admin from my Vaultwarden to the external frontend?
Welcome to the forums, that is not something I have tried setting up and if no one here has any suggestions you might want to look in the official Netgate forums for an answer.