Ncacn_http [better]

: The network address or hostname of the machine where the RPC server process is active.

Microsoft eventually replaced the raw ncacn_http implementation with (and later, MAPI over HTTP). They took the same concept but locked it inside an armored truck. Now, the RPC data wasn't just inside HTTP; it was encrypted inside SSL/TLS. ncacn_http

Enter ncacn_http .

: Because the traffic appears as standard web traffic (HTTP/HTTPS), it can cross network boundaries that usually block native RPC ports (like 135). Use Cases and Security : The network address or hostname of the

: The proxy opens a raw ncacn_ip_tcp or ncacn_np connection to the actual RPC server on behalf of the client and relays the RPC packet. Now, the RPC data wasn't just inside HTTP;

In the context of the Microsoft Interface Definition Language (MIDL), ncacn_http identifies Microsoft Internet Information Services (IIS) as the protocol family for an endpoint.

In technical terms, ncacn_http is a "protocol sequence." In our story, it is a .