RFC 4462 Generic Security Service Application Program Interface (GSS-API) Authentication and Key Exchange for the Secure Shell (SSH) Protocol
The Kerberos V5 (“GSSAPI”) Simple Authentication and Security Layer (SASL) Mechanism

RFC 2743, Generic Security Service Application Program Interface Version 2, Update 1
RFC 2744, Generic Security Service API Version 2 : C-bindings
RFC 7546, Structure of the Generic Security Service (GSS) Negotiation Loop

SS-API Key Exchange with SHA2

Developing with GSSAPI

GssApiProblem
Dell Unity: Weak SSH key exchange algorithm is reported by third-party Vulnerability scanning software on Unity code 5.1.X (User Correctable)
GSSAPI im RZ der TUHH
SSPI/Kerberos Interoperability with GSSAPI
Chapter 1 The GSS-API: An Overview
Steps for setting up user authentication with GSS-API (Kerberos)

Wikipedia

GSSAPI (de)
Generic Security Service Application Program Interface (GSSAPI) (en)