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CentreCOM ARX640S 設定例集 5.1.5 #6
IPフィルターは、IP、TCP、UDP、ICMPなどのヘッダー情報をもとに、パケットの通過・拒否を制御する機能です。この例では、IPフィルターの基本的な設定方法を、CUG(Closed Users Group)サービス接続環境における拠点間VPN接続の構成例をもとに解説します。
PPPユーザー名 | user@isp |
PPPパスワード | isppasswd |
PPPoEサービス名 | 指定なし |
IPアドレス | グローバルアドレス1個(動的割り当て) |
DNSサーバー | 接続時に通知される |
ユーザーID(PPPユーザー名) | userA@group | userB@group |
パスワード(PPPパスワード) | grouppassA | grouppassB |
IPアドレス | 4.4.4.1/32 | 4.4.4.2/32 |
WAN側物理インターフェース | gigabitEthernet 0 | |
WAN側(gigabitEthernet 0.1)IPアドレス | 接続時にCUGサービス網から取得する(毎回同じアドレスが割り当てられる) | |
WAN側(gigabitEthernet 0.2)IPアドレス | 接続時にISPから取得する | - |
LAN側(vlan 1)IPアドレス | 192.168.10.1/24 | 192.168.20.1/24 |
VPN接続設定 | ||
ローカルセキュアグループ | 0.0.0.0/0 | 192.168.20.0/24 |
リモートセキュアグループ | 192.168.20.0/24 | 0.0.0.0/0 |
トンネル終端アドレス | 4.4.4.2 | 4.4.4.1 |
IKE設定 | ||
交換モード | Main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/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 | 行わない | |
起動時のISAKMPネゴシエーション | 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 userA@group password grouppassA ↓
ppp profile pppoe1 ↓ my-username user@isp password isppasswd ↓
interface gigabitEthernet 0 ↓ no shutdown ↓
interface gigabitEthernet 0.1 ↓ ip address ipcp ↓ ip tcp mss auto ↓ no shutdown ↓ pppoe enable ↓ ppp bind-profile pppoe0 ↓
interface gigabitEthernet 0.2 ↓ ip address ipcp ↓ ip tcp mss auto ↓ no shutdown ↓ pppoe enable ↓ ppp bind-profile pppoe1 ↓ ip napt inside any ↓ ip ids in protect ↓
interface vlan 1 ↓ ip address 192.168.10.1/24 ↓
ip address-up-always ↓
ip route default gigabitEthernet 0.2 ↓
ip route 4.4.4.2/32 gigabitEthernet 0.1 ↓ ip route 4.4.4.2/32 Null 254 ↓
access-list ip extended pppoe1-in ↓ access-list ip extended pppoe1-out ↓ dynamic permit ip any any ↓ interface gigabitEthernet 0.2 ↓ ip traffic-filter pppoe1-in in ↓ ip traffic-filter pppoe1-out out ↓
isakmp proposal isakmp encryption 3des hash sha1 group 2 ↓ isakmp policy isakmp ↓ peer 4.4.4.2 ↓ auth preshared key secret ↓ proposal isakmp ↓
access-list ip extended ipsec ↓ permit ip any any ↓ ipsec proposal ipsec esp encryption 3des hash sha1 ↓ ipsec policy ipsec ↓ peer 4.4.4.2 ↓ access-list ipsec ↓ local-id 0.0.0.0/0 ↓ remote-id 192.168.20.0/24 ↓ proposal ipsec ↓ always-up-sa ↓
interface tunnel 0 ↓ tunnel mode ipsec ↓ ip unnumbered vlan 1 ↓ ip tcp mss auto ↓ no shutdown ↓ tunnel policy ipsec ↓
ip route 192.168.20.0/24 tunnel 0 ↓ ip route 192.168.20.0/24 Null 254 ↓
access-list ip extended tunnel0-in ↓
dynamic permit tcp 192.168.20.4/32 192.168.10.2/32 eq 23 ↓
dynamic permit tcp 192.168.20.5/32 192.168.10.2/32 eq 23 ↓ dynamic permit udp 192.168.20.5/32 192.168.10.2/32 eq tftp ↓
dynamic permit udp 192.168.20.6/32 192.168.10.2/32 eq tftp ↓
deny ip any 192.168.10.2/32 ↓
dynamic permit ip any any ↓
access-list ip extended tunnel0-out ↓ dynamic permit ip any any ↓
interface tunnel 0 ↓ ip traffic-filter tunnel0-in in ↓ ip traffic-filter tunnel0-out out ↓
copy running-config startup-config ↓
ルーターBの設定 |
ppp profile pppoe0 ↓ my-username userB@group password grouppassB ↓
interface gigabitEthernet 0 ↓ no shutdown ↓
interface gigabitEthernet 0.1 ↓ ip address ipcp ↓ ip tcp mss auto ↓ no shutdown ↓ pppoe enable ↓ ppp bind-profile pppoe0 ↓
interface vlan 1 ↓ ip address 192.168.20.1/24 ↓
ip address-up-always ↓
ip route 4.4.4.1/32 gigabitEthernet 0.1 ↓
isakmp proposal isakmp encryption 3des hash sha1 group 2 ↓ isakmp policy isakmp ↓ peer 4.4.4.1 ↓ auth preshared key secret ↓ proposal isakmp ↓
access-list ip extended ipsec ↓ permit ip any any ↓ ipsec proposal ipsec esp encryption 3des hash sha1 ↓ ipsec policy ipsec ↓ peer 4.4.4.1 ↓ access-list ipsec ↓ local-id 192.168.20.0/24 ↓ remote-id 0.0.0.0/0 ↓ proposal ipsec ↓ always-up-sa ↓
interface tunnel 0 ↓ tunnel mode ipsec ↓ ip unnumbered vlan 1 ↓ ip tcp mss auto ↓ no shutdown ↓ tunnel policy ipsec ↓
ip route default tunnel 0 ↓
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 userA@group password 8 e$QOnYQDIRnplmrSlqsqIAdhQAA ppp profile pppoe1 my-username user@isp password 8 e$QNKMe2ohmPDFnghyVppETegAA ! interface gigabitEthernet 0 no shutdown ! interface gigabitEthernet 0.1 ip address ipcp ip tcp mss auto no shutdown pppoe enable ppp bind-profile pppoe0 ! interface gigabitEthernet 0.2 ip address ipcp ip tcp mss auto no shutdown pppoe enable ppp bind-profile pppoe1 ip napt inside any ip traffic-filter pppoe1-in in ip traffic-filter pppoe1-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 ipsec ip traffic-filter tunnel0-in in ip traffic-filter tunnel0-out out ! interface vlan 1 ip address 192.168.10.1/24 no shutdown ! ip route default gigabitEthernet 0.2 ip route 4.4.4.2/32 gigabitEthernet 0.1 ip route 4.4.4.2/32 Null 254 ip route 192.168.20.0/24 tunnel 0 ip route 192.168.20.0/24 Null 254 ! access-list ip extended ipsec permit ip any any access-list ip extended pppoe1-in access-list ip extended pppoe1-out dynamic permit ip any any access-list ip extended tunnel0-in dynamic permit tcp 192.168.20.4/32 192.168.10.2/32 eq 23 dynamic permit tcp 192.168.20.5/32 192.168.10.2/32 eq 23 dynamic permit udp 192.168.20.5/32 192.168.10.2/32 eq tftp dynamic permit udp 192.168.20.6/32 192.168.10.2/32 eq tftp deny ip any 192.168.10.2/32 dynamic permit ip any any access-list ip extended tunnel0-out dynamic permit ip any any ! isakmp proposal isakmp encryption 3des hash sha1 group 2 ! isakmp policy isakmp peer 4.4.4.2 auth preshared key 8 e$I3eQu7yNuLxQA proposal isakmp ! ipsec proposal ipsec esp encryption 3des hash sha1 ! ipsec policy ipsec peer 4.4.4.2 access-list ipsec local-id 0.0.0.0/0 remote-id 192.168.20.0/24 proposal ipsec always-up-sa ! ! ! ! end |
ルーターBのコンフィグ
! service password-encryption ! clock timezone JST 9 ! ! ip address-up-always ppp profile pppoe0 my-username userB@group password 8 e$QOnYQDIRnplklVTihIgEZVQAA ! interface gigabitEthernet 0 no shutdown ! interface gigabitEthernet 0.1 ip address ipcp ip tcp mss auto no shutdown pppoe enable ppp bind-profile pppoe0 ! 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 ipsec ! interface vlan 1 ip address 192.168.20.1/24 no shutdown ! ip route default tunnel 0 ip route 4.4.4.1/32 gigabitEthernet 0.1 ! access-list ip extended ipsec permit ip any any ! isakmp proposal isakmp encryption 3des hash sha1 group 2 ! isakmp policy isakmp peer 4.4.4.1 auth preshared key 8 e$I3eQu7yNuLxQA proposal isakmp ! ipsec proposal ipsec esp encryption 3des hash sha1 ! ipsec policy ipsec peer 4.4.4.1 access-list ipsec local-id 192.168.20.0/24 remote-id 0.0.0.0/0 proposal ipsec always-up-sa ! ! ! ! end |
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