how would noip work if it didn't expose your ip? This statement confuses me. It's funny how used laptops that are 10x faster than an rpi4 are about the same price. Obviously they use more power though :)
At the time I set it up I didnt know what I was doing or how it all worked, etc etc, so that is where the statement about it exposing my IP came from. It has been so long that when I first set it up I may have known it was exposed but didnt care. As time went on I just didnt like knowing it was exposed. Why? I just prefer it not be. Not that it couldnt be found I am sure
And you are absolutely right about the laptops and I have 2 right now that are just collecting dust. But currently I have no reason to change to a laptop. It is kind of like driving a nail in the wall with a sledge hammer, sad to say a laptop is more than I need in a server at this moment. The only benefit I get from a laptop for my current needs is a built in battery backup.