c: Copyright (C) 1998 - 2022, Daniel Stenberg, , et al. SPDX-License-Identifier: curl Long: ftp-ssl-control Help: Require SSL/TLS for FTP login, clear for transfer Protocols: FTP Added: 7.16.0 Category: ftp tls Example: --ftp-ssl-control ftp://example.com See-also: ssl Multi: boolean --- Require SSL/TLS for the FTP login, clear for transfer. Allows secure authentication, but non-encrypted data transfers for efficiency. Fails the transfer if the server does not support SSL/TLS.