N - specifies a server principal name. Same semantics as the ServerPrincName argument to RpcBindingSetAuthInfoEx. See the ...

-N  - specifies a server principal name. Same semantics
    as the ServerPrincName argument to RpcBindingSetAuthInfoEx. See the
    MSDN for more information on RpcBidningSetAuthInfoEx. This field can be
    used only when authentication level and security package are selected.
    
-I  - allows you to specify alternative identity to connect
    to the server. The identity is in the form user,domain,password where
    the three fields have the obvious meaning. If the user name, domain or
    password have special characters that can be interpreted by the shell
    be sure to enclose the identity in double quotes. You can specify *
    instead of the password and RPC will prompt you to enter the password
    without echoing it on the screen. If this field is not specified, the
    identity of the logged on user will be used. This field can be used
    only when authentication level and security package are selected.
  
-C  - a hex bitmask of flags. It has the same meaning as
    the Capabilities field in the RPC_SECURITY_QOS structure described
    in the MSDN. This field can be used only when authentication level and
    security package are selected.
    
-T  - can be static or dynamic. If not specified,
    dynamic is the default. This field can be used only when authentication
    level and security package are selected.

-M  - can be anonymous, identify, impersonate or
    delegate. Default is impersonate. This field can be used only when
    authentication level and security package are selected.