1) Shell access to the server by opening the Putty Configuration (which may be dowloaded from
http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html)

2) Put in host name as the server IP and port should be either 8288 or 22 and click Open.

3) Login as “root” and for the “password” put in the server password and press enter.

4) To install telnet in the server , type the command as yum -y install telnet.

5) You are done where the telnet function is successfully installed in the server.