Just to clarify. I have 80 and 443 as TCP and 51820 (sorry for the typo) as UDP. I used the automatic installer script. Doesn't that generate the config files? If not, then probably there lies my problem.
Sorry to not tell that, the plan is indeed for doing this in node red. I only want an example to put me on the right track and thought maybe someone else had something similar.
I've got a led strip on my toilet door. It turns red when someone is inside (mesured by the wasp in a box principle.