Filtres de paquets en entrée sur les routeurs de frontière ISP

• access-list 100 deny ip 221.19.0.0 0.0.31.255 any**

• access-list 100 deny ip 0.0.0.0 255.255.255.255 any

• access-list 100 deny ip 10.0.0.0 0.255.255.255 any

• access-list 100 deny ip 127.0.0.0 0.255.255.255 any

• access-list 100 deny ip 169.254.0.0 0.0.255.255 any

• access-list 100 deny ip 172.16.0.0 0.0.255.255 any

• access-list 100 deny ip 192.0.2.0 0.0.0.255 any

• access-list 100 deny ip 192.168.0.0 0.0.255.255 any

• access-list 100 permit ip any any

• ** l'ISP a le bloc d'adresse 221.19.0.0/19