1.7 Versioning and Capability Negotiation
Supported Transports: This protocol uses only RPCs. The protocol supports the Server Message Block (SMB) transport. For more information, see section 2.1.
Protocol Version: This protocol interface has a single version number of 0.0. An RPC client determines whether a method is supported by attempting to call the method; if the method is not supported, the RPC server will return an "Opnum out of range" error<1> as specified in [C706] and [MS-RPCE].
Security and Authentication Methods: Authentication and security are provided as specified in [MS-SMB] and [MS-RPCE]. Anonymous access can be allowed for some operations, as specified in DsRolerGetPrimaryDomainInformation (Opnum 0) (section 3.2.5.1).