Those are 2 different networks. You have public and private, as we all do. I think be default, that it's set to public...mine is and I didn't change anything when I did a clean install.
That said, the public option as active, so when you are connected to public networks and makes you device undiscoverable. Where as the private network is just the opposite....you are discoverable but it's a trusted network....ie your home network.
I don't go anywhere and connect to public networks, but I use it as it's more secure....IMO. As I don't want any discoverability. That's just me.