If your server has port 80 and 8443 open and you point a domain to your server, you can get a valid certificate automatially by opening the Nextcloud AIO Interface via:<br>
-`8080/TCP`: Mastercontainer Interface with self-signed certificate (works always, also if only access via IP-address is possible, e.g. `https://internal.ip.address:8080/`)
-`80/TCP`: redirects to Nextcloud (is used for getting the certificate via ACME http-challenge for the Mastercontainer)
-`8443/TCP`: Mastercontainer Interface with valid certificate (only works if port 80 and 8443 are open and you point a domain to your server. It generates a valid certificate then automatically and access via e.g. `https://public.domain.com:8443/` is possible.)
-`443/TCP`: will be used by the Nextcloud container later on and needs to be open
-`3478/TCP` and `3478/UPD`: will be used by the Turnserver inside the Talk container and needs to be open