telnet service
*Ensure that the rpm_package "telnet-server-<0.17>-<30>.i386.rpm" has installed.
(rpm -Uvh telnet-server-<0.17>-<30>.i386.rpm)
(you can find in RedHat Linux CD 4)
*vi /etc/xinetd.d/telnet
remark this line "# disable=yes"
*/etc/rc.d/init.d/xinetd restart #restart xinetd service
test telnet service .
you will use another PC with same LAN,
type "telnet <IP>"