Change default FTP port for greater security for the server and to its contents, if the server is a shared one. Not only because the default port gives you a connection automatically and if they could guess the password, your content is in risk. So, I would suggesto to change the FTP port to a non standard one.
The PureFTP daemon is easy to configure on a cPanel server using WHM or the PureFTPd configuration file. For those looking to set up FTP from command line (such as for automation purposes), you can use cPanel’s built-in template system to apply configuration options that will not be overwritten during cPanel updates.