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# 3つの拠点間で同一セグメントのネットワークを構築する
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# 拠点1 ルーター(2)
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# 経路の設定
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ip route default gateway pp 1

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# ブリッジの設定
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bridge member bridge1 lan1 tunnel1
ip bridge1 address 192.168.100.2/24

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# プロバイダとの接続設定
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pp select 1
 pp always-on on
 pppoe use lan2
 pp auth accept pap chap
 pp auth myname (ISP2に接続するID) (ISP2に接続するパスワード)
 ppp lcp mru on 1454
 ppp ipcp msext on
 ppp ccp type none
 ip pp address (拠点1の固定グローバルIPアドレス)
 ip pp mtu 1454
 ip pp secure filter in 1020 1030 1040 1041 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

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# L2TPv3接続を受け入れるための設定(本社)
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tunnel select 1
 tunnel encapsulation l2tpv3
 tunnel endpoint address 192.168.100.2 (本社の固定グローバルIPアドレス)
 ipsec tunnel 101
 ipsec sa policy 101 1 esp aes-cbc sha-hmac
 ipsec ike keepalive use 1 on
 ipsec ike keepalive log 1 on
 ipsec ike local address 1 192.168.100.2
 ipsec ike pre-shared-key 1 text (IPsecの事前共有鍵1)
 ipsec ike remote address 1 (本社の固定グローバルIPアドレス)
 l2tp always-on on
 l2tp tunnel auth on (L2TPトンネル認証に用いるパスワード1)
 l2tp tunnel disconnect time off
 l2tp keepalive use on 60 3
 l2tp keepalive log on
 l2tp hostname (接続相手に通知するホスト名)
 l2tp syslog on
 l2tp local router-id 192.168.100.2
 l2tp remote router-id 192.168.100.1
 l2tp remote end-id (L2TPv3のリモートエンドID1)
 tunnel enable 1

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# NATの設定
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nat descriptor type 1 masquerade
nat descriptor address outer 1 (拠点1の固定グローバルIPアドレス)
nat descriptor masquerade static 1 1 192.168.100.2 udp 500
nat descriptor masquerade static 1 2 192.168.100.2 esp

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# IPsecのトランスポートモード設定
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ipsec transport 1 101 udp 1701
ipsec auto refresh on

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# L2TPv3の設定
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l2tp service on l2tpv3

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# フィルターの設定
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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 192.168.100.0/24 *
ip filter 1030 pass * 192.168.100.0/24 icmp
ip filter 1040 pass * 192.168.100.2 udp * 500
ip filter 1041 pass * 192.168.100.2 esp
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

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# DNSの設定
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dns host lan1
dns server (ISP2より指定されたDNSサーバーのIPアドレス)
dns private address spoof on