SSL / TLS, SFTP, Secure FTP Defined - KB Article #1078Related Articles -- 1025, 1028, 1036, 1053, 1078, 1088, 1266
Also see our File Transfer Protocol Selection Guide
SSL (Secure Socket Layer) is a security standard originally developed by Netscape and commonly used to secure HTTP (web) traffic as "HTTPS" and FTP traffic as FTPS. TLS (Transport Layer Security) is a IETF (Internet Engineering Task Force) is standardized and more secure version of SSL.
The following URLs contain very detailed information on these protocols:
Our Serv-U FTP Server and FTP Voyager FTP client both support SSL/TLS. When data in transit is protected using SSL/TLS, confidential information is protected from tampering, snooping, leakage, or accidental exposure.
Both products also support SFTP, a method of securing file transfers via the Secure Shell (SSH) connection protocol. SFTP can be valuable in high-security environments where corporate firewall rules prevent the two-port FTPS protocol from operating properly since SFTP only uses one port for its connection.