The DCS-930L always broadcasts over the Internet, although bandwidth will not be used unless a client (e.g. mydlink or D-ViewCam) makes a request from the DCS-930L to access the video/audio feed. The firmware does not have an option to disable broadcasting. If you would like to disable broadcasting to address potential security concerns, another member suggested adding a rule within the router to block the DCS-930L from broadcasting outside of the home network.