The RPC methods that the File Server Remote VSS Protocol exposes are available on one endpoint:
FssagentRpc named pipe (RPC protseqs ncacn_np), as specified in [MS-RPCE] section 126.96.36.199.
The File Server Remote VSS Protocol endpoint is available only on RPC over named pipes.
This protocol MUST use the UUID as specified in section 1.9. The RPC version number is 3.0.
This protocol allows any user to establish a connection to the RPC server. The protocol requires the underlying RPC protocol to retrieve the identity of the caller that made the method call, as specified in [MS-RPCE] section 188.8.131.52.3. The server SHOULD use this identity to perform method-specific access checks as specified in section 3.1.4.