# # NATディスクリプター機能を効率的に利用する # # # LANインターフェースの設定 #(LAN1ポートを使用) # ip lan1 address 192.168.0.1/24 # # WANインターフェースの設定 #(LAN2ポートを使用) # pp select 1 pp always-on on pppoe use lan2 pp auth accept pap chap pp auth myname (ISPに接続するID) (ISPに接続するパスワード) ppp lcp mru on 1454 ppp ipcp ipaddress on ppp ipcp msext on ip pp mtu 1454 ip pp secure filter in 1020 1030 2000 ip pp secure filter out 1010 1011 1012 1013 1014 1015 3000 dynamic 100 101 102 103 104 105 106 107 ip pp nat descriptor 1 pp enable 1 ip route default gateway pp 1 # # フィルターの設定 # ip filter source-route on ip filter directed-broadcast on 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 1020 reject 192.168.0.0/24 * ip filter 1030 pass * 192.168.0.0/24 icmp 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 * * submission ip filter dynamic 106 * * tcp ip filter dynamic 107 * * udp # # NATの設定 # nat descriptor type 1 masquerade nat descriptor timer 1 300 nat descriptor timer 1 tcpfin 10 # # DHCPの設定 # dhcp service server dhcp server rfc2131 compliant except remain-silent dhcp scope 1 192.168.0.2-192.168.0.100/24 # # DNSの設定 # dns host lan1 dns server select 1 pp 1 any . restrict pp 1 dns private address spoof on