A.Router(config)#ip access-list extended port4444
Router(config-ext-nacl)#deny icmp any any
Router(config-ext-nacl)#deny udp any any eq 1434
Router(config-ext-nacl)#deny tcp any any eq 4444
Router(config-ext-nacl)#permit icmp 202.38.97.0 0.0.0.255 any
Router(config-ext-nacl)#permit ip any any
B.Router(config)#access-list port4444 permit icmp 202.38.97.0 0.0.0.255 any
Router(config)#access-list port4444 deny icmp any any
Router(config)#access-list port4444 deny udp any any eq 1434
Router(config)#access-list port4444 deny tcp any any eq 4444
Router(config)#access-list port4444 permit ip any any
C.Router(config)#ip access-list extended port4444
Router(config-ext-nacl)#permit 202.38.97.0 0.0.0.255 any icmp
Router(config-ext-nacl)#deny any any icmp
Router(config-ext-nacl)#deny any any udp eq 1434
Router(config-ext-nacl)#deny any any tcp eq 4444
Router(config-ext-nacl)#permit ip any any
D.Router(config)#ip access-list extended port4444
Router(config-ext-nacl)#permit icmp 202.38.97.0 0.0.0.255 any
Router(config-ext-nacl)#deny icmp any any
Router(config-ext-nacl)#deny udp any any eq 1434
Router(config-ext-nacl)#deny tcp any any eq 4444
Router(config-ext-nacl)#permit ip any any