특정 192.168.1.47인 host에서 오는 패킷만 폐기하고 다른 모든 패킷은 허용하도록 설정
Router2#conf t
Router2(config)#access-list 1 deny 192.168.1.47 0.0.0.0
Router2(config)#access-list 1 permit any
Router2(config)#interface ethernet 0/0
Router2(config-if)#ip access-group 1 out
Router2(config-if)#exit
Router2(config)#exit
Router2#sh ip access-list
Standard IP access list 1
10 deny 192.168.1.47
20 permit any
