이상하게도 ALL:ALL만 하면 텔넷이 안되네요..
지우면 잘 되고..
 물론 allow 하지 않은 사이트에서도 막 들어오고요 --;
왜 이러죠??
 [root@FS root]# cat /etc/hosts.allow
#
# hosts.allow   This file describes the names of the hosts which are
#               allowed to use the local INET services, as decided
#               by the '/usr/sbin/tcpd' server.
#
 ALL:218.50.47.100
 [root@FS root]# cat /etc/hosts.deny
#
# hosts.deny    This file describes the names of the hosts which are
#               *not* allowed to use the local INET services, as decided
#               by the '/usr/sbin/tcpd' server.
#
# The portmap line is redundant, but it is left to remind you that
# the new secure portmap uses hosts.deny and hosts.allow.  In particular
# you should know that NFS uses portmap!
 ALL: ALL        <--------    요기!--좋은 하루 되세요!!!