Redirect from HTTP to HTTPS
To make sure that visitors always visit your website via a secured connection, it's suggested to use redirects, so visitors are automatically transferred from using an insecure HTTP to a secured HTTPS connection. Different methods are available to accomplish this. Below you'll find manuals for setting the configuration to redirect on Apache, IIS and NGINX to have visitors redirected, without making the use of scripts. Here we make of use of the permanent HTTP redirect code (HTTP status 301). Apache and NGINX can do this by default, for IIS we have to make use of the specific rewrite module.
Besides this, it's advisable to use HSTS as well.