The public network is the network who are in the working in the public place example= airpore auto park etc...

But he can be a different public network like hospitol school specialy it is the network who are accessble for the peoples and who are not in the property of same one particulary.

PSTN Network (Public Switch Telephone Network)

Maine Public Broadcasting Network was created on 1961-11-13.

Network Location

Tunneling, also known as "port forwarding," is the transmission of data intended for use only within a private, usually corporate network through a public network in such a way that the routing node in the public network are unaware that the transmission is part of a private network. Tunneling is generally done by encapsulating the private network data and protocol information within the public network transmission units so that the private network protocol information appears to the public network as data. Tunneling allows the use of the Internet, which is a public network, to convey data on behalf of a private network.