http://bugs.winehq.org/show_bug.cgi?id=19781
--- Comment #26 from Hans Leidekker hans@meelstraat.net 2009-11-04 05:04:04 --- I was wrong, it appears that authentication services need to be registered by the rpc server and ncalrpc simply has RPC_C_AUTHN_WINNT registered by default. So, after a call to RpcServerRegisterAuthInfo, my test appears to do secure rpcs over ncacn_ip_tcp.