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CentreCOM ARX640S 設定例集 5.1.5 #17
PPPoEでインターネットに接続され、同一のネットワークアドレス(プライベートアドレス)で運用している拠点間をIPsecにより接続します。
両拠点のネットワークアドレスの衝突を回避するために、パケットがIPトンネルに入るときと、出るときに内部NATを適用します。
PPPユーザー名 | user1@isp | user2@isp |
PPPパスワード | password1 | password2 |
PPPoEサービス名 | 指定なし | |
使用できるIPアドレス | 1.1.1.1/32 | グローバルアドレス1個(動的割り当て) |
接続形態 | 端末型(アドレス1個固定) | 端末型(アドレス1個不定) |
WAN側物理インターフェース | gigabitEthernet 0 | |
WAN側(gigabitEthernet 0.1)IPアドレス | 1.1.1.1/32 | 動的割り当て |
LAN側(vlan 1)IPアドレス | 192.168.1.1/24 | |
VPN接続設定 | ||
ローカルセキュアグループ | 172.16.1.0/24 | 172.16.2.0/24 |
リモートセキュアグループ | 172.16.2.0/24 | 172.16.1.0/24 |
トンネル終端アドレス | 不定 | 1.1.1.1 |
IKE設定 | ||
交換モード | Aggressiveモード | |
認証方式 | 事前共有鍵(pre-shared key) | |
事前共有鍵 | secret(文字列) | |
ローカルID/リモートID | なし/vpn | vpn/なし |
暗号化認証アルゴリズム | 3DES & SHA1-DH2 | |
有効期限 | 21600秒(6時間)(デフォルト) | |
DPDによる死活監視 | 行う | |
起動時のISAKMPネゴシエーション | 行わない | 行う |
IPsec設定 | ||
SAモード | トンネルモード | |
セキュリティープロトコル | ESP | |
暗号化認証アルゴリズム | 3DES & SHA1 | |
PFSグループ | なし | |
有効期限 | 3600秒(1時間)(デフォルト) |
ルーターAの設定 |
ppp profile pppoe0 ↓ my-username user1@isp password password1 ↓
interface gigabitEthernet 0 ↓ no shutdown ↓
interface gigabitEthernet 0.1 ↓ ip address 1.1.1.1/32 ↓ ip tcp mss auto ↓ no shutdown ↓ pppoe enable ↓ ppp bind-profile pppoe0 ↓ ip napt inside any ↓ ip ids in protect ↓
interface vlan 1 ↓ ip address 192.168.1.1/24 ↓
ip address-up-always ↓
ip route default gigabitEthernet 0.1 ↓
access-list ip extended pppoe0-in ↓ dynamic permit udp any interface gigabitEthernet 0.1 eq 500 ↓ access-list ip extended pppoe0-out ↓ dynamic permit ip any any ↓ interface gigabitEthernet 0.1 ↓ ip traffic-filter pppoe0-in in ↓ ip traffic-filter pppoe0-out out ↓
isakmp proposal isakmp encryption 3des hash sha1 group 2 ↓ isakmp policy i ↓ peer any ↓ mode aggressive ↓ auth preshared key secret ↓ remote-id vpn ↓ proposal isakmp ↓ keepalive enable ↓
access-list ip extended ipsec ↓ permit ip any any ↓ ipsec proposal ipsec esp encryption 3des hash sha1 ↓ ipsec policy vpn ↓ peer any ↓ access-list ipsec ↓ nat ↓ local-id 172.16.1.0/24 ↓ remote-id 172.16.2.0/24 ↓ proposal ipsec ↓ always-up-sa ↓
interface tunnel 0 ↓ tunnel mode ipsec ↓ ip unnumbered vlan 1 ↓ ip tcp mss auto ↓ no shutdown ↓ tunnel policy vpn ↓ ip nat static network 192.168.1.0/24 172.16.1.0/24 ↓
ip route 172.16.2.0/24 tunnel 0 ↓ ip route 172.16.2.0/24 Null 254 ↓
copy running-config startup-config ↓
ルーターBの設定 |
ppp profile pppoe0 ↓ my-username user2@isp password password2 ↓
interface gigabitEthernet 0 ↓ no shutdown ↓
interface gigabitEthernet 0.1 ↓ ip address ipcp ↓ ip tcp mss auto ↓ no shutdown ↓ pppoe enable ↓ ppp bind-profile pppoe0 ↓ ip napt inside any ↓ ip ids in protect ↓
interface vlan 1 ↓ ip address 192.168.1.1/24 ↓
ip address-up-always ↓
ip route default gigabitEthernet 0.1 ↓
access-list ip extended pppoe0-in ↓ access-list ip extended pppoe0-out ↓ dynamic permit ip any any ↓ interface gigabitEthernet 0.1 ↓ ip traffic-filter pppoe0-in in ↓ ip traffic-filter pppoe0-out out ↓
isakmp proposal isakmp encryption 3des hash sha1 group 2 ↓ isakmp policy i ↓ peer 1.1.1.1 ↓ mode aggressive ↓ auth preshared key secret ↓ local-id vpn ↓ proposal isakmp ↓ keepalive enable ↓
access-list ip extended ipsec ↓ permit ip any any ↓ ipsec proposal ipsec esp encryption 3des hash sha1 ↓ ipsec policy vpn ↓ peer 1.1.1.1 ↓ access-list ipsec ↓ nat ↓ local-id 172.16.2.0/24 ↓ remote-id 172.16.1.0/24 ↓ proposal ipsec ↓ always-up-sa ↓
interface tunnel 0 ↓ tunnel mode ipsec ↓ ip unnumbered vlan 1 ↓ ip tcp mss auto ↓ no shutdown ↓ tunnel policy vpn ↓ ip nat static network 192.168.1.0/24 172.16.2.0/24 ↓
ip route 172.16.1.0/24 tunnel 0 ↓ ip route 172.16.1.0/24 Null 254 ↓
copy running-config startup-config ↓
まとめ |
ルーターAのコンフィグ
! service password-encryption ! clock timezone JST 9 ! ! ip address-up-always ppp profile pppoe0 my-username user1@isp password 8 e$QOccTYhEXbMfHIfO37QVxcQAA ! interface gigabitEthernet 0 no shutdown ! interface gigabitEthernet 0.1 ip address 1.1.1.1/32 ip tcp mss auto no shutdown pppoe enable ppp bind-profile pppoe0 ip napt inside any ip traffic-filter pppoe0-in in ip traffic-filter pppoe0-out out ip ids in protect ! interface gigabitEthernet 1 shutdown ! interface gigabitEthernet 2 no shutdown ! interface gigabitEthernet 3 no shutdown ! interface gigabitEthernet 4 no shutdown ! interface gigabitEthernet 5 no shutdown ! interface loop 0 shutdown ! interface loop 1 shutdown ! interface tunnel 0 tunnel mode ipsec ip unnumbered vlan 1 ip tcp mss auto no shutdown tunnel policy vpn ip nat static network 192.168.1.0/24 172.16.1.0/24 ! interface vlan 1 ip address 192.168.1.1/24 no shutdown ! ip route default gigabitEthernet 0.1 ip route 172.16.2.0/24 tunnel 0 ip route 172.16.2.0/24 Null 254 ! access-list ip extended ipsec permit ip any any access-list ip extended pppoe0-in dynamic permit udp any interface gigabitEthernet 0.1 eq 500 access-list ip extended pppoe0-out dynamic permit ip any any ! isakmp proposal isakmp encryption 3des hash sha1 group 2 ! isakmp policy i peer any mode aggressive auth preshared key 8 e$I3eQu7yNuLxQA remote-id vpn proposal isakmp keepalive enable ! ipsec proposal ipsec esp encryption 3des hash sha1 ! ipsec policy vpn peer any access-list ipsec nat local-id 172.16.1.0/24 remote-id 172.16.2.0/24 proposal ipsec always-up-sa ! ! ! ! end |
ルーターBのコンフィグ
! service password-encryption ! clock timezone JST 9 ! ! ip address-up-always ppp profile pppoe0 my-username user2@isp password 8 e$QOccTYhEXbMdtFMUEH9HLBgAA ! interface gigabitEthernet 0 no shutdown ! interface gigabitEthernet 0.1 ip address ipcp ip tcp mss auto no shutdown pppoe enable ppp bind-profile pppoe0 ip napt inside any ip traffic-filter pppoe0-in in ip traffic-filter pppoe0-out out ip ids in protect ! interface gigabitEthernet 1 shutdown ! interface gigabitEthernet 2 no shutdown ! interface gigabitEthernet 3 no shutdown ! interface gigabitEthernet 4 no shutdown ! interface gigabitEthernet 5 no shutdown ! interface loop 0 shutdown ! interface loop 1 shutdown ! interface tunnel 0 tunnel mode ipsec ip unnumbered vlan 1 ip tcp mss auto no shutdown tunnel policy vpn ip nat static network 192.168.1.0/24 172.16.2.0/24 ! interface vlan 1 ip address 192.168.1.1/24 no shutdown ! ip route default gigabitEthernet 0.1 ip route 172.16.1.0/24 tunnel 0 ip route 172.16.1.0/24 Null 254 ! access-list ip extended ipsec permit ip any any access-list ip extended pppoe0-in access-list ip extended pppoe0-out dynamic permit ip any any ! isakmp proposal isakmp encryption 3des hash sha1 group 2 ! isakmp policy i peer 1.1.1.1 mode aggressive auth preshared key 8 e$I3eQu7yNuLxQA local-id vpn proposal isakmp keepalive enable ! ipsec proposal ipsec esp encryption 3des hash sha1 ! ipsec policy vpn peer 1.1.1.1 access-list ipsec nat local-id 172.16.2.0/24 remote-id 172.16.1.0/24 proposal ipsec always-up-sa ! ! ! ! end |
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