c: Copyright (C) Daniel Stenberg, , et al. SPDX-License-Identifier: curl Long: ssl Help: Try SSL/TLS Protocols: FTP IMAP POP3 SMTP LDAP Added: 7.20.0 Category: tls Example: --ssl pop3://example.com/ See-also: ssl-reqd insecure ciphers Multi: boolean --- Warning: this is considered an insecure option. Consider using --ssl-reqd instead to be sure curl upgrades to a secure connection. Try to use SSL/TLS for the connection. Reverts to a non-secure connection if the server does not support SSL/TLS. See also --ftp-ssl-control and --ssl-reqd for different levels of encryption required. This option is handled in LDAP since version 7.81.0. It is fully supported by the OpenLDAP backend and ignored by the generic ldap backend. Please note that a server may close the connection if the negotiation does not succeed. This option was formerly known as --ftp-ssl (Added in 7.11.0). That option name can still be used but will be removed in a future version.