Developing Secure Applications with Visual Basic

DCOM Tunneling Through TCP/IP

A different way of accomplishing the same result is by tunneling DCOM through TCP/IP. This method marshals an initial connection from the client to the server through the HTTP protocol, which then sets up a direct connection between the DCOM proxy on the server and the DCOM proxy on the client. From that point on, all DCOM communications between these two computers takes place through a single TCP/IP connection. This connection is often referred to as SSL tunneling and is part of Microsoft's COM Internet Services (CIS) .

The attraction of this approach is that it requires nothing special from an application programming aspect. All you have to do is create a regular DCOM application with server-side objects and ...