f) Permitir tráfego da rede externa 172.16.0.0/16:

            Access-list 1 permit 172.16.0.0 0.0.255.255
            Interface Ethernet 0
            Ip access-group 1 out
            Interface Ethernet 1
            Ip access-group 1 out

g) Bloquear o tráfego do host 172.16.4.13:

        Access-list 1 deny 172.16.4.13 0.0.0.0

        Access-list 1 permit 0.0.0.0 255.255.255.255

        Interface Ethernet 0

        Ip access-group 1 out

h) Bloquear um tráfego da sub-rede 172.16.4.0/24:

            Access-list 1 deny 172.16.4.0 0.0.0.255

            Access-list 1 permit any

            Interface Ethernet 0

            Ip access-group 1 out

i) Permitir estabelecer sessões Telnet da rede 192.89.55.0:

        Access-list 2 permit 192.89.55.0 0.0.0.255

        Line vty 0 4

        Access-class 2 in
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