WAN回線障害時に備える（自動バックアップ機能）

ip lan1 address 192.168.0.1/24

pp select 1
pp backup pp 2 # 注釈1
pp always-on on
pppoe use lan2
pp auth accept pap chap
pp auth myname (ISP1と接続するID) (ISP1と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 nat descriptor 1
pp enable 1
ip route default gateway pp 1

pp select 2
pp bind bri1
isdn remote address call (ISP2のアクセスポイントの回線番号)
pp auth accept pap chap
pp auth myname (ISP2と接続するID) (ISP2と接続するパスワード)
ppp ipcp ipaddress on
ppp ipcp msext on
ip pp nat descriptor 1
pp enable 2

nat descriptor type 1 masquerade

dhcp service server
dhcp scope 1 192.168.0.2-192.168.0.100/24

dns server select 1 (ISP1から指定されたDNSサーバーのIPアドレス) any . restrict pp 1
dns server select 2 (ISP2から指定されたDNSサーバーのIPアドレス) any .
dns private address spoof on

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 * * netmeeting
ip filter dynamic 106 * * tcp
ip filter dynamic 107 * * udp
pp select 1
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 # 注釈2
pp enable 1
pp select 2
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 # 注釈2
pp enable 2