How to get SSL setup for HA on Synology Docker?

I found a really good video on YouTube, but, of course, they aren’t running on Synology and one of the first things they did was add the add-on DuckDNS.

So anyway, here is what I’ve accomplished (if I remember what I did since it is mostly all new):

  1. Set up ports 80 and 443 on the router letting them through to the Synology box
  2. Create a domain under DuckDNS.
  3. Created DDNS entry for DuckDNS using key token using Install instructions in DuckDNS.
  4. Tested that I could start HA on the port 8123 using the DuckDNS domain name that was created.
  5. Went to the Security|Certificate in Control Panel and managed to get an entry for my DuckDNS domain.

That entry looked a little odd, because unlike the Synology one that list

   For: FTPS, Synology Storage Console Server, Synology Drive Server, Log Receiving, System, default

My entry just said For: -

Maybe that is all right, I don’t know. It DID say registered R3 which is the same thing the other Synology entries said for theirs. And mine said (RSA/ECC)

  1. Tried to create Reverse Proxy in Login Portal|Reverse Advanced, but got various errors when trying various things. Never able to access HA with https://domainname:8123 or 443.

If I tried 443 in the source port, it said port number had to between 1 and 65535. Odd message

When I tried 8123 in source port, it said domain name is already in use.

I tried putting an http section in configuration.yaml and it didn’t like that.

I feel like I’m close. Anybody got a clue?

Oh, I also exported all the pem files out of Synology, but don’t know how to tell HA to use them. (nor do I know which ones are for use with HA, if any)