from today on, the access to this website is only allowed via https. if you try to open http://nullacht.pro, it will redirect you to https://nullacht.pro.

if you want to do the same with your website, just add this bit of code to your .htaccess file:

RewriteEngine On

# Always use HTTPS
RewriteCond %{SERVER_PORT} !^443$
RewriteRule (.*) https://%{HTTP_HOST}/$1 [L]

ronny thieme tells you how to setup your uberspace (german) with a free certificate from startcom/startssl.