3. Enable Shared SSL for the domain in the list.
Now the site is available both at the non-secured second level domain name (e.g. http://example.com) and at the secured third level domain alias (e.g. https://example.websitesource.net). Note that Shared SSL certificates work only within one domain level, i.e. for user1.example.com and not for www.user1.example.com. In the example above, the certificate will not work for https://www.example.websitesource.net, and your visitors will get the warning: "The name on the security certificate does not match the name of the site".