Telnet is a terminal emulation program that allows users to connect their PC to a server on a TCP/IP network like the Internet. Through a Telnet client, users can enter commands that are executed on the remote server as if they were directly accessing the server's console, enabling remote control and communication with other servers. To start a Telnet session, users must log in to the Telnet server with a valid username and password.

1. Understanding Telnet
1.What is telnet?
2.Telnet Client
3.Telnet Server
4.Network Virtual Terminal
5.Reference

2. What is Telnet?
A terminal emulation program for TCP/IP networks such as the
Internet. The Telnet program runs on your computer and
connects your PC to a server on the network. You can then enter
commands through the Telnet program and they will be
executed as if you were entering them directly on the server
console. This enables you to control the server and communicate
with other servers on the network. To start a Telnet session, you
must log in to a server by entering a valid username and
password. Telnet is a common way to remotely control Web
servers.