If you have been alarmed by a blue screen quickly flashing in your browser when logging into cPanel, and your URL link it showing up as "yourdomain.com:2082/unprotected/redirect.html", this is a regular loading screen for cPanel.
The flashing blue screen that you have seen is simply a selection screen if the firewall was blocking port 2082. Since it is not, you are automatically redirected to the cPanel loading screen. This is normal with newer cPanel versions.
If you have any other questions, please feel free to open a help desk ticket.