secure FTP to on-rev server best practice

[Martin Koob]

I have been trying to use SFTP to connect to the on-rev.com server when I am uploading and managing files for a site hosted on on-rev. I have not been able to connect via SFTP. I have tried with Interarchy and Cyberduck. I get a connection refused message.

With Cyberduck I can connect with FTP-SSL (Explicit AUTH TLS)
-this shows a lock icon in the GUI
With Interarchy I can set FTP uses SSL (AUTH TLS) : required in the security preferences
-there is no visible indication in the GUI that there is a secure connection

Is FTP using SSL equivalent to using SFTP?
Is there something I need to set in cPanel to make a SFTP connection, ie. set up or configure and account for SFTP connections.

Martin