File Transfer Protocol is a protocol used to transfer files to and from your server, and to manipulate them on your server.

The most common way for this to occur is by using a FTP client on your computer that connects to your FTP server on your Gandi server (this must be installed).

FTP has a some major drawbacks, the most notable being that your password, username, and files are all sent unencrypted over the internet during your session.

If you are concerned with security, it is better to use a secure file transfer and manipulation protocol such as SFTP or SCP which encrypt information so that it cannot be intercepted by eavesdroppers.