Telnet Server Installation

yum install telnet-server telnet

Install telnet server via yum.

vi /etc/xinetd.d/telnet

disable = no

Change disable to "no" in config file and save it.

vi /etc/services

telnet 9090/tcp
telnet 9090/udp

Change port to enhance security.
Change telnet server port from port 23 to port 9090

/etc/init.d/xinetd restart
chkconfig xinetd on

telnet localhost 9090

Start xinetd for telnet service and test it.