CATVインターネットを利用する

ip lan1 address 192.168.2.1/24

ip lan2 address dhcp
ip lan2 nat descriptor 1
ip route default gateway dhcp lan2

nat descriptor type 1 masquerade
nat descriptor address outer 1 primary

dhcp service server
dhcp scope 1 192.168.2.2-192.168.2.100/24

dns server (ISPから指定されたDNSサーバーのIPアドレス)
dns private address spoof on

ip filter source-route on
ip filter directed-broadcast on
ip filter 1001 reject 192.168.2.0/24 *
ip filter 1002 pass * 192.168.2.0/24 icmp
ip filter 1010 reject * * udp,tcp 135 *
ip filter 1011 reject * * udp,tcp * 135
ip filter 1012 reject * * udp,tcp netbios_ns-netbios_ssn *
ip filter 1013 reject * * udp,tcp * netbios_ns-netbios_ssn
ip filter 1014 reject * * udp,tcp 445 *
ip filter 1015 reject * * udp,tcp * 445
ip filter 2000 reject * *
ip filter 3000 pass * *
ip filter dynamic 100 * * ftp
ip filter dynamic 101 * * www
ip filter dynamic 102 * * domain
ip filter dynamic 103 * * smtp
ip filter dynamic 104 * * pop3
ip filter dynamic 105 * * tcp
ip filter dynamic 106 * * udp
ip lan2 secure filter in 1001 1002 1020 1021 2000
ip lan2 secure filter out 1010 1011 1012 1013 1014 1015 3000 dynamic 100 101 102 103 104 105 106