If you want to set up your own free, legitimate, and secure remote viewing network, you do not need to rely on insecure exposed web frames. Excellent free and open-source software (FOSS) exists for this exact purpose:
Universal Plug and Play (UPnP) is designed to let devices automatically open ports on a router. When you plug in an IP camera, it often asks the router: "Open a door to the internet so I can be viewed remotely." If UPnP is enabled, the router complies, unknowingly exposing the viewerframe page to the entire world. inurl viewerframe mode motion network camera free