Cannot access via NGINX on port other than 443

Hi all

I am accessing my Home Assistant via a DDNS, which works just fine. However, the Nuki lock seems to have issues with connecting via https, which is why I want to switch my local environment to http. Using DDNS + Let’s Encrypt does not allow for that, as it only accepts https connections.

In comes NGINX. Setting it up on port 443 works fine. But: My port 443 is already in use and I want to run NGINX on a different port. Say 4433. As soon as I set it up that way, access is no longer possible.
There’s no error message or anything, the browser just keeps loading for a long time and then tells me that the site I am looking for cannot be reached.

Using Home Assistant OS
NGINX Home Assistant SSL proxy version 3.1.5

I followed the add-on documentation to the dot. As mentioned, it works fine with port 443.

This is my add-on config:

hsts: max-age=31536000; includeSubDomains
certfile: fullchain.pem
keyfile: privkey.pem
cloudflare: false
  active: false
  default: nginx_proxy_default*.conf
  servers: nginx_proxy/*.conf

In the Network section I changed from 443/tcp to 4433

Let’s Encrypt is taking care of the certificates

This is the addition to config.yaml

  #ssl_certificate: /ssl/fullchain.pem
  #ssl_key: /ssl/privkey.pem
  use_x_forwarded_for: true

Can anybody help me out to resolve this issue? Why does it suddenly not work anymore when I switch from 443 to 4433?
I feel like I’m missing something super obvious here…

oh, and of course there’s also a port forward for TCP from 4433 to homeassistantIP:4433

Turns out this was completely my bad…
I am using my ISPs router in Bridge mode (cannot be circumvented) and then using Google WiFi for my actual network.

I forwarded the ports on my Google WiFi, but not on my ISPs router. Turns out both is needed and this immediately fixes the issue.

could you elaborate on how to do this? I’m having the same issue where GWifi is using port 443 and I’m trying to use nginx to access some local apps I have in Docker but can’t get it to work properly

You just need to make sure that any router you have set up (ideally this is only one, I have a bit of a special situation here) is routing through to the next device in the chain.

So in my case: ISP router is routing 443 to Google WiFi - after that Goofle WiFi is routing port 443 to the RPi. Not sure about Docker though - maybe somebody else needs to step in here.