FTPS (also known as FTP Secure or FTP-SSL) is an extension to the commonly used File Transfer Protocol (FTP) that adds support for the Transport Layer Security (TLS) and the Secure Sockets Layer (SSL) cryptographic protocols.
FTPS works only on Port 21 for DomainNames.com.au's cPanel Linux Hosting, Plesk Windows Hosting, Single Domain Linux and Windows Hosting, Multi Domain Linux and Windows Hosting, Reseller Linux and Windows Hosting packages.
Some FTP clients support both FTPS modes: Explicit and Implicit. In such FTP clients, the Explicit (FTPES) mode needs to be selected.
Few FTP clients supporting FTPS