Create a Beautiful Web out of this technical world!
Network mapping is the study of the physical connectivity of networks. Internet mapping is the study of the physical connectivity of the Internet. Network mapping often attempts to determine the servers and operating systems run on networks. It is not to be confused with the remote discovery of which characteristics a computer may possess (operating system, open ports, listening network services, etc.), an activity which is called network enumerating and is more akin to penetration testing.
The Internet as seen by the Opte Project (photo credit: Barret Lyon)