Telnet is usually run through xinetd so go into /etc/xinetd.d and open up the telnet file. There should be a line that says:
Change it to:
Then you must restart xinetd for the changes to take effect.
As for ftp, it depends on what ftp server you are using.(wuftpd,vsftpd,proftpd) Usually there will be a startup script in /etc/init.d so to start vsftpd you would do: