Hi, We have a VSAT connection here working now quite fine with ISA Server. If your configuration looks like ours, a 'classical' configuration should be OK (We have a public IP address, VSAT IDU is connected to a network card on the ISA Server, The rest of the local network is connected to the server with another network card) Publishing: - ISA Listens to incoming web requests at the external IP address port 80, and route them to the local web server. - ISA Listens to outgoing web requests at the local address, and route them to the IDU (which has a static IP address too)