However, this mode is not described in the official RFC 4217, so there is no standard for it and it is not supported by us. The connection is cut off if the client doesn’t receive an answer. The client sends his answer right after he sends the request via SSL/TLS. In Implicit mode negotiating connections is not supported. If the client doesn’t request this security, the server can either allow an unsecure connection to be established, suppress the connection or straight up block it. In Explicit Mode the client will request that the connection to the Server is secured and accept the encryption together. FTP uses usernames and passwords for authentication via an unencrypted connection as well as the transfer (usually through the default port 21).įTPS – File Transfer Protocol over SSL establishes the connection and the data transfer via the SSL/TLS protocol. Additionally, it could create, delete and read directories. FTP could upload, download copy and delete files on different computers/servers. The FTP protocol originates from 1971 when the first RFC entry (959) was published for the FTP protocol. The FTP service to up- and download files is well known.īut what is the difference between the other types such as FTPS and SFTP? Which one is responsible for a secure transfer? To understand the difference, let’s start by explaining the regular FTP protocol.

Filezilla server sftp to cloud storage