#
# hosts.deny    This file contains access rules which are used to
#               deny connections to network services that either use
#               the tcp_wrappers library or that have been
#               started through a tcp_wrappers-enabled xinetd.
#
#               The rules in this file can also be set up in
#               /etc/hosts.allow with a 'deny' option instead.
#
#               See 'man 5 hosts_options' and 'man 5 hosts_access'
#               for information on rule syntax.
#               See 'man tcpd' for information on tcp_wrappers
#
vsftp: cracker.org    // cracker.org 도메인으론 vsftp 접속 안됨

sshd:ALL EXCEPT .example.com 192.168.184.      // .example.com   192.168.184. 대역 접속만 허용
                                                                      // 192.168.184.0 or  192.168.184.0/24  안먹힘