Force https without certificate locally

[javierguzman]

Hello all,

I have changed my native Synology NAS reverse proxy with nginx proxy manager and I've ported the local domains I had. However, I'm getting problems to make n8n work. I've been searching a lot and I think is due to not able to force https without a certificate or the websockets headers. Specifically I made it working previously with this guide https://mariushosting.com/how-to-install-n8n-on-your-synology-nas/

Therefore, my questions are:

1. How do I add proxy headers properly? I used the advanced tab and added:

   proxy_set_header Upgrade $http_upgrade; proxy_set_header Connection "Upgrade";

Without success.

2. How do I enable HSTS without certificate and so on? With the native synology nas reverse proxy in the browser you specify https but then it uses http in the destination.

Thank you in advance and regards