Hey, I'm fairly new to Emby and securing your sites through SSL certificates, but pretty experienced in portforwarding, dyndns, debian... Nevertheless I wanted to make my Emby portal opened to the public, HTTPS only. I followed the steps of this guide (https://github.com/MediaBrowser/Wiki/wiki/Secure-Your-Server).
I have a subdomain (example.spr.io) on freedns.afraid.org updated through DynDNS of my FritzBox router and running Emby on my Debian Homeserver utilizing Proxmox for the virtualization. I had Let's encrypt already setup correctly and my certificates under /etc/letsencrypt/live/example.spr.io. Then I generated the value for the TXT record using certbot -d example.spr.io --manual --preferred-challenges dns certonly. During the generation, I was asked to add the TXT record as _acme-challenge.example.spr.io to my freedns account and successfully done so:
Afterwards I used the command openssl pkcs12 -export -out examplesprio.pfx -inkey privkey.pem -in cert.pem -certfile chain.pem to generate the .pfx file, moved it to /opt/emby-server/etc/ssl/examplesprio.pfx and applied the new settings:
Issue:
In theory everything should be fine and running, but it's not. Directly getting ERR_CONNECTION_RESET on requesting the site..