TELNET is a client-server protocol, based on a reliable connection-oriented transport. Typically this protocol used to establish a connection to TCP port 23, where a getty-equivalent program (telnetd) is listening, although TELNET predates TCP/IP and was originally run on NCP.
Install telnetd server
$ sudo apt-get install telnetd
Restart inetd service:
$ sudo /etc/init.d/openbsd-inetd restart
You should now be able to telnet to the server from Windows or Linux desktop system to Ubuntu Linux telnet server. Type the following command to connect to
Telnet server:
$ telnet ubuntu-linux-server-ip
$ telnet 192.168.1.200
$ telnet ubuntu.domain.com
