General information on SSL accounts
The SSL Manager gives you the ability to create an encrypted connection and therefore transfer data between the browser and the server in an encrypted way. You can easily activate or deactivate the encryption for a single domain with a simple click of the mouse. To do this, however, you need a wildcard certificate — a single SSL certificate that is issued to cover multiple (sub)domains and/or names all at once.
By adding a dedicated IP address, you can also improve browser compatibility. (These cost a small fee.) It is standard practice for SSL accounts to be installed using server name indication (SNI) technology. This means that there is an extension by which the SSL account also uses the respective IP address's hosting server. This technology, however, is not supported by several older devices and browsers. If you want to ensure that absolutely all visitors can use an encrypted connection to your site, then you can add your own IP address to your SSL account.
You can learn more here: SSL accounts.
General information on SSL certificates
To install an SSL account, you will need a wildcard certificate — a single SSL certificate that is issued to cover multiple (sub)domains and/or names all at once. A signed certificate is digitally signed by a certificate authority like Thawte. Depending on the type you choose, the certificate verifies the domain name and/or the identity of the certificate owner. Certificates ordered through Hetzner Online are generally signed by DigiCert or Thawte Inc. We provide free DigiCert basic and Let's Encrypt certificates. For a fee, we also provide Thawte business certificates. In addition, you can also import your own certificates using the SSL Manager.
To discover more about SSL certificates, go here: SSL certificates.