Deleted the ticket because I'd rather tell in my own words.
I'm doing this project for college using OwnCloud as a cloud server. The only problem that I have, is that I want to switch from HTTP to HTTPS? How can I do it while I'm using the appliance instead of having it installed in an Ubuntu/other Linux distro server? There is no such setting in the web interfaces of OwnCloud nor Uninvention to change from HTTP to HTTPS, so what commands do I have to insert in the command line if I have to?