Nginx Proxy Manager to handle SSL proxy for HA and Synology nas

Hi all,

I have a Synology NAS which was running it’s own SSL (Let’s Encrypt) using some port forwards.

I have setup HA on my rpi and installed Nginx to handle the SSL for HA. But since I can only forward port 80 and 443 one time, I have created 2 DNS records synology.domain.com and ha.domain.com and forwarded port 80 and 443 to the Nginx proxy.

But from here on I get a bit stuck. The thing now is, that the Synology cannot auto update it’s certificate anymore, cause Nginx will handle that. This causes the Cloudstation and DSM apps on the NAS to fails ssl (I have forwarded their port to my NAS directly)

Anyone can shine a little light on how to set this up, or what I am missing here?

Thanks,
Arno

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Have you ever found a solution to this problem? Coincidentally, I am now also running into the same problem and am unable to connect to the NAS via the reverse proxy when setting up the cloud station drive (uses port 6690).