http://www.rfc-editor.org/rfc/rfc4752.txt
RFC 4752: The Kerberos V5 ("GSSAPI") Simple Authentication and Security Layer (SASL) Mechanism, A. Melnikov2006-11-01T23:00:00-00:00This document replaces Section 7.2 of RFC 2222, the definition of the "GSSAPI" SASL mechanism. This document, together with RFC 4422, obsoletes RFC 2222. [STANDARDS-TRACK]