One of the simplest ways to have a secure site is to use the server's built-in self-generated certificate.
Make sure the radio button next the "User the server's certificate" is selected, and click the "Save" button at the bottom of the screen.
#Understanding non-Trusted Certificates
Warning: Although non-Trusted certificates provide a high level of encryption, they are not always the best choice because they are self-generated instead of purchased from a trusted authority.
Because of this, visitors to your site may receive a warning popup window when they access a secure page. Therefore, we DO NOT recommend using this method.