Hello,
I ended up changing my mind and really saw that redirection can not be considered an option. I noticed that most of my clients access Plesk through Central of client /WHMCS, since in comparison to cPanel, for example, Plesk does not have the easy-to-decorate address, like adding "/ cpanel" at the end of the URL.
How can I disable access to <example.com>:8443 and make access only available to my <hostname>:8443 ?