# yum whatprovides telnet-server
Loaded plugins: langpacks, presto, refresh-packagekit
1:telnet-server-0.17-52.fc17.x86_64 : The server program for the Telnet remote login protocol
Repo : fedora
# yum install telnet-server-0.17-52.fc17.x86_64
# vi /etc/xinetd.d/telnet
service telnet
{
.....
disable = no
}
# service xinetd restart