DN/External/curl-8.17.0/docs/cmdline-opts/krb.md

c	SPDX-License-Identifier	Long	Arg	Help	Protocols	Requires	Category	Added	Multi	See-also	Example
Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.	curl	krb	<level>	Enable Kerberos with security <level>	FTP	Kerberos	deprecated	7.3	single	delegation ssl	--krb clear ftp://example.com/

--krb

Deprecated option (added in 8.17.0). It has no function anymore.

Enable Kerberos authentication and use. The level must be entered and should be one of clear, safe, confidential, or private. Should you use a level that is not one of these, private is used.