Route all my plex traffic through reverse proxy

Hi,

I have a setup at home where I run plex behind a reverse proxy. See below for setup

INTERNET -----> Nginx proxy (redirect all HTTP to HTTPS traffic with a let's encrypt cert) -----> Plex media server

The thing is when I set the server mapping port to port 443 this doesn't work anymore. So I need to have port 32400 open directly to my plex server. So port 32400 does NOT go through the reverse proxy. The reverse proxy is using the Host header do determine where to route the traffic. I have changed the "Settings -> Network -> Custom server access URLs" to the url I use. Still doesn't work.

So currently I have port 32400 open as well. When I follow the traffic from the client I can see that it connect to:
https://[my-ip-address].[some random characters].plex.direct:32400/

How can I fix so all my traffic goes through my nginx proxy?

Thanks

• E