VMS Help TCPIP Services, Programming Interfaces, RPC Client Routines, authnone_create, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Creates and returns an authentication handle that passes
    null authentication information with each remote procedure
    call. Use this routine if the server process does not require
    authentication information. RPC uses this routine as the default
    authentication routine unless you create another authentication
    handle using either the authunix_create or authunix_create_
    default routine.