encode8062Jun 15, 2023

cannot open port 443

https://lemmy.one/post/132139

cannot open port 443 - Lemmy.one

Hi. I want to start selfhosting my data. I already have a jellyfin server running. I’d like to add a nextcloud instance. The setup of nextcloud says I should open up port 443 for using my own domain. Sadly I am not able to open up this port properly. It is open however when I visit jellyfin.mydomaim.com [http://jellyfin.mydomaim.com] it is rerouted to the config of my router. To circumvent this problem I have set up a reverse proxy that accepts port 8443 instead of 443. For my jellyfin this seems to work. I can visit it with jellyfin.my [http://jellyfin.my] domain.com:8443 [http://domain.com:8443]. I don’t know how I can get this to work for nextcloud as it only accepts 443. Any advice on my setup is welcome! BTW I am running Debian on an old PC. Thanks in advance for the help!

Show threadr0ckrJun 15, 2023

There seems to be a bit of a misunderstanding of what a reverse proxy does.

The proxy should accept requests on port 80 and 443 and on the basis of the requested website route you to the correct adress:

  • Request for jellyfin.mydomain.com comes in
  • Reverse proxy checks where it should reroute it -> host.of.jellyfin:8443

    • So your client thinks its talking to your jellyfin-instance over port 443 but in actuality your proxy reroutes the traffic to wherever your jellyfin needs it to arrive.

    Show threadencode8062
    I get a 302 "temporary redirect" response, I do not know why my router does this. I'll check its config again. I have added a port mapping so that external 443 is mapped to my internal server 443
    Jun 15, 2023 at 2:44pmWeb