You can disable web terminal access (SSH) in Cpanel/WHM by creating /var/cpanel/disable_whm_terminal_ui file for WHM users.
email@example.com:~# touch /var/cpanel/disable_whm_terminal_ui
The Let’s Encrypt allows you to install AutoSSL for the hostname. In this tutorial, I will show you how to install Let’s Encrypt SSL to the hostname. Here are the steps to install the same on hostname.