ACL Standard
R1(config)#access-list 20 deny 192.168.2.0 0.0.0.255
R1(config)#access-list 20 permit any
R1(config)#interface fastEthernet 0/0
R1(config-if)#ip access-group 20 out
ACL Etendue
Router(config)#access-list 120 deny tcp 192.168.3.0 0.0.0.255 any eq www
Router(config)#access-list 120 deny udp 192.168.3.0 0.0.0.255 any eq 56
Router(config)#access-list 120 deny icmp 192.168.3.0 0.0.0.255 any echo
Router(config)#access-list 120 permit ip any any
Router(config)#interface fastEthernet 0/0
Router(config-if)#ip access-group 120 in