"The Simple Authentication and Security Layer (SASL) is a framework for adding authentication support to connection-based protocols. This document describes the method for using the Generic Security Service Application Program Interface (GSS-API) Kerberos V5 in the SASL. This document replaces Section 7.2 of RFC 2222@ the definition of the ""GSSAPI"" SASL mechanism. This document@ together with RFC 4422@ obsoletes RFC 2222."