3.3.1.1.6 Table of Security Provider Info
Table of Security Provider Info: The client and server SHOULD maintain a table indexed by the Security Provider ID value (for example, RPC_C_AUTHN_GSS_KERBEROS) that defines the number of legs required to negotiate a security context. See section 2.2.1.1.7 for more information on security providers and section 3.3.1.5.2.1 for usage details.