ROS Public Facing Server

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Hi,

I recently bought a security camera that once connected to your WiFi network lets you view the video from anywhere via their app, no changing router settings required. I'm wondering if it would be possible to set this up with a ROS robot?

I've been asking around and it seems like one possible solution is to create some sort of intermediary server that the Robot would know to publish data to, and the app knows to pull data from. But I have no idea how I would set up a server like that or what its even called.

Any advise is greatly appreciated!