Описание тега spnego
SPNEGO (Simple and Protected GSSAPI Negotiation Mechanism) is a GSSAPI "pseudo mechanism" that is used to negotiate one of a number of possible real mechanisms.
SPNEGO (Simple and Protected GSSAPI Negotiation Mechanism) is used when a client application wants to authenticate to a remote server, but neither end is sure what authentication protocols the other supports. It is a GSSAPI "pseudo mechanism" which is used to negotiate one of a number of possible real mechanisms.
SPNEGO
It is defined in RFC 4178.
Source: SPNEGO on Wikipedia