#chkconfig --list | grep ftp
vsftpd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
#chkconfig vsftpd off
#service vsftpd stop
line 1: Find out what FTP you have
line 3: Make it so that ftp will not restart on boot
line 4: turn off ftp service
if line 2 is says off all the way across and you can still telnet to the machine you must have a ftp server built from source and launched from xinitd and you can follow the above instructions... probably.