How to turn Telnet on in Linux
In order to turn Telnet on do the following.
# rpm -q telnet (it will bring up a version)
# yum install telnet-server telnet
*On the server, you can go to Applications>System Tools>File Browser
then click on File System and open the etc folder>xinetd.d folder and
right click and open the telnet file with text editor
# chkconfig --list telnet
telnet off
# chkconfig telnet on
# chkconfig --list telnet
telnet on
# service xinetd restart