Nextcloud 13 on Synology NAS - External web access

🚧 Installation
1

Hi
I - an utter nextcloud newbie - have successfully installed Nextcloud 13.04 on my NAS (Synology DS218+). I didn’t do it via Docker or Virtual Machine, but directly via phpmyadmin and the Synology Web Station (see configuration below)

So far, so good. Now, I would like to access Nextcloud from outside my home network. I am using Synology Quickconnect, the DDNS service by synology. My domains within this service are:

“mydomain.quickconnect.to (http)”
“mydomain.de3.quickconnect.to (https)”

I added the domains (tried both) to trusted domains in the nextcloud config.php. I didn’t alter anything in the config.php or htaccess apart from that.

After installing the Nextcloud Android app on my Samsung S7 and inserting the domains above on the NC start screen I receive the error message: “Incorrect server configuration”

What am I doing wrong? What do I have to do to access NextCloud from outside my home network?

Nextcloud version: 13.0.4
Operating system and version: Synology diskstation DSM 6.2
PHP version: 7.0
Maria DB 10
web station installed
HTTP-Backend-Server: Apache HTTP Server 2.4
PHP Default Profile PHP 7.0

2

Are you able to get to Nextcloud on both of those domains from the browser? Is Nextcloud at the root of those domains, or do you need to enter mydomain.de3.quickconnect.to/nextcloud to access it from the browser?
If you need to add a path for Nextcloud, you’ll need to put it in your Android app as well.

3

I was able to figure it out: First of all, Quickconnect does not support other than Synology apps. Second, I had an IPv6 DSLite connection. My provider switched it back to IPv4. Then, I set up an DynDNS domain, put it in the config file as trusted domain and voilĂ , everything is working!

4

I’m exactly now in your past situation. Nextcloud in synology nas Dsm 6.2, access outside my lan…I’ve read your way to get solution of the problem but I didn’t understand the corrects passages(expecially …put it in the config file as trusted domain ) …could you explain a little bit more? Thanks for you attention