1.7 Versioning and Capability Negotiation
Supported Transports: This protocol uses the DCOM Remote Protocol (as specified in [MS-DCOM]), which in turn uses RPC over TCP, as its only transport. For more information, see section 2.1.
Protocol Version: This protocol includes six DCOM interfaces, all of which MUST be version 0.0.
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The client negotiates for a given set of server functionality by specifying the UUID that corresponds to the wanted RPC interface when binding to the server.<4>
Security and Authentication Methods: As specified in [MS-DCOM], [MS-RPCE], and section 2.1.