Synology Photostation with non default ports and no Quick Connect

Hi Folks, the main problem is that the Photostation could only be reached by Port 80/443, that means you can only reach it with the following setting http(s)://your.dyndns.tld/photo but not with http(s)://your.dyndns.tld:12345/photo I thought this could be easily chnge by settings up different Port in the Photostation, but then I always get error 403. So Read more about Synology Photostation with non default ports and no Quick Connect[…]