2.1.2 Client

The client SHOULD use RPC over SMB (ncacn_np) or RPC over TCP/IP (ncacn_ip_tcp) as the RPC protocol sequence to communicate with the server. Using other protocol sequences MAY work depending on the configuration and implementation of the server.

The client MAY use an authentication level of privacy to connect to the server and if the server does not support this authentication level, it MAY fall back to connection. Authentication levels are specified in [MS-RPCE].