We have some developers that have a application that connects to a mainframe system, informing it of an IP address and port number. The client then disconnects and listens on that port number. The mainframe then initiates a connection to them. They now need to demo the applications, but need it working via a VPN client. I have not been able to initiate connections 'to' VPN clients. I think my first question would be if it is possible at all?