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
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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.