Remote connection BC9191

Hello,

I would like to ask you guys a question. How can I connect to a Beckhoff BC9191 plc remotely ie from a different network? At the moment I can connect to it on a local network using tcAdsWebSerivce that is set up over ISS, this also allows me to send and receive data to and from the plc, essentially I want to do the same thing except remotely, would anyone know how this could be implemented?

Ok I think it can be done using TCP/IP over HTTP using TcBase library I am just not sure how it is used. Would anyone know have any previous experience in doing this and could help me out?