Using telnet and the right address, one can connect to a library's on-line system, a database or even a time of day service. We will learn to use telnet from the system prompt. Know the address of the host to which you would like to telnet. The host will then respond in any number of ways. You may need to give a user name and a password, or you might not need to do anything.
Some hosts execute a function and close the connection.
Follow the instructions on the screen and do what you need to do. When done, type the escape caracter. Connected to leopard.cs.byu.edu. You have mail. Connected to rs.internic.net.