VPN サービス モジュールを搭載した Catalyst 6500 と Cisco ルータ間の IPSec LAN-to-LAN トンネルの設定例

!--- Define the Phase 1 policy.

crypto isakmp policy 1
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 10.66.79.99
!
!

!--- Define the encryption policy for this setup.

crypto ipsec transform-set cisco esp-des esp-md5-hmac
!

!--- Define a static crypto map entry for the peer !--- with mode ipsec-isakmp. !--- This indicates that Internet Key Exchange (IKE) !--- is used to establish the IPsec !--- security associations (SAs) to protect the traffic !--- specified by this crypto map entry.

crypto map cisco 10 ipsec-isakmp   
 set peer 10.66.79.99
 set transform-set cisco 
 match address 100
!
!
no spanning-tree vlan 100
!
!
!
interface FastEthernet3/1
 ip address 192.168.5.1 255.255.255.0
!

!--- This is the outside Layer 2 port that allows VLAN !--- 209 traffic to enter.

interface FastEthernet3/48
 no ip address
 switchport
 switchport trunk encapsulation dot1q
 switchport mode trunk
!
interface GigabitEthernet4/1
 no ip address
 flowcontrol receive on
 flowcontrol send off
 switchport
 switchport trunk encapsulation dot1q

!--- VLAN 100 is defined as the Interface VLAN (IVLAN).

 switchport trunk allowed vlan 1,100,1002-1005
 switchport mode trunk
 cdp enable
!
interface GigabitEthernet4/2
 no ip address
 flowcontrol receive on
 flowcontrol send off
 switchport
 switchport trunk encapsulation dot1q

!--- The Port VLAN (PVLAN) configuration is handled transparently by !--- the VPN service module without user configuration !--- or involvement. It also is not shown in the configuration. !--- Note: For every IVLAN, a corresponding PVLAN exists.

 switchport trunk allowed vlan 1,209,1002-1005
 switchport mode trunk
 cdp enable
 spanning-tree portfast trunk
!
interface Vlan1
no ip address
shutdown
!

!--- This is the IVLAN that is configured to intercept the traffic !--- destined to the secure port on which the inside port !--- of the VPN service module is the only port present.

 interface Vlan100
 ip address 10.66.79.180 255.255.255.224
 crypto map cisco

!--- This is the secure port that is a virtual Layer 3 interface. !--- This interface purposely does not have a Layer 3 IP address !--- configured. This is normal for the BITW process. !--- The IP address is moved from this interface to VLAN 100 to !--- accomplish BITW. This brings the VPN service module into !--- the packet path.

 interface Vlan209
 no ip address
 crypto connect vlan 100
!
ip classless

!--- Configure the routing so that the device !--- is directed to reach its destination network. 

ip route 0.0.0.0 0.0.0.0 10.66.79.161
global (outside) 1 interface

!--- NAT 0 prevents NAT for networks specified in the ACL inside_nat0_outbound.


nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 192.168.5.0 255.255.255.0


!--- This access list (inside_nat0_outbound) is used with the nat zero command. !--- This prevents traffic which matches the access list from undergoing !--- network address translation (NAT). The traffic specified by this ACL is !--- traffic that is to be encrypted and !--- sent across the VPN tunnel. This ACL is intentionally !--- the same as (100). !--- Two separate access lists should always be used in this configuration.

access-list inside_nat0_outbound permit ip 192.168.5.0 0.0.0.255 192.168.6.0 0.0.0.255


!--- This is the crypto ACL. 

access-list 100 permit ip 192.168.5.0 0.0.0.255 192.168.6.0 0.0.0.255

SV3-2#show run
Building configuration...

Current configuration : 1268 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname SV3-2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
ip audit notify log
ip audit po max-events 100
ip ssh break-string 
no ftp-server write-enable
!

!--- Define the Phase 1 policy.

crypto isakmp policy 1
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 10.66.79.180
!
! 

!--- Define the encryption policy for this setup.

crypto ipsec transform-set cisco esp-des esp-md5-hmac 
!

!--- Define a static crypto map entry for the peer !--- with mode ipsec-isakmp. This indicates that IKE !--- is used to establish the IPsec !--- SAs to protect the traffic !--- specified by this crypto map entry.

crypto map cisco 10 ipsec-isakmp 
 set peer 10.66.79.180
 set transform-set cisco 
 match address 100
!
!

!--- Apply the crypto map to the interface.

interface Ethernet0/0
 ip address 10.66.79.99 255.255.255.224
 half-duplex
 crypto map cisco
!
interface Ethernet0/1
 ip address 192.168.6.1 255.255.255.0
 half-duplex
 no keepalive
!
!
ip http server
no ip http secure-server
ip classless

!--- Configure the routing so that the device !--- is directed to reach its destination network.

ip route 0.0.0.0 0.0.0.0 10.66.79.97
!
!

!--- This is the crypto ACL.

access-list 100 permit ip 192.168.6.0 0.0.0.255 192.168.5.0 0.0.0.255
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
end

!--- Define the Phase 1 policy.
 
crypto isakmp policy 1
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 10.66.79.99
!
!

!--- Define the encryption policy for this setup. 

crypto ipsec transform-set cisco esp-des esp-md5-hmac
!

!--- Define a static crypto map entry for the peer !--- with mode ipsec-isakmp. This indicates that IKE !--- is used to establish the IPsec !--- SAs to protect the traffic !--- specified by this crypto map entry.
 
crypto map cisco 10 ipsec-isakmp   
 set peer 10.66.79.99
 set transform-set cisco 
 match address 100
!
!
no spanning-tree vlan 100
!
!
!
interface FastEthernet3/1
 ip address 192.168.5.1 255.255.255.0

!--- This is the secure port that is configured in routed port mode. !--- This routed port mode does not have a Layer 3 IP address !--- configured. This is normal for the BITW process. !--- The IP address is moved from this interface to the VLAN 100 to !--- accomplish BITW. This brings the VPN service module into !--- the packet path. This is the Layer 2 port VLAN on which the !--- outside port of the VPN service module also belongs.

interface FastEthernet3/48
 no ip address
 crypto connect vlan 100
!
interface GigabitEthernet4/1
 no ip address
 flowcontrol receive on
 flowcontrol send off
 switchport
 switchport trunk encapsulation dot1q

!--- VLAN 100 is defined as the IVLAN.

 switchport trunk allowed vlan 1,100,1002-1005
 switchport mode trunk
 cdp enable
!
interface GigabitEthernet4/2
 no ip address
 flowcontrol receive on
 flowcontrol send off
 switchport
 switchport trunk encapsulation dot1q

!--- The PVLAN configuration is handled transparently by the !--- VPN service module without user configuration !--- or involvement. It also is not shown in the configuration. !--- Note: For every IVLAN, a corresponding PVLAN exists.
 
 switchport trunk allowed vlan 1,209,1002-1005
 switchport mode trunk
 cdp enable
 spanning-tree portfast trunk
!
interface Vlan1
no ip address
shutdown
!

!--- This is the IVLAN that is configured to intercept the traffic !--- destined to the secure port on which the inside port of the !--- VPN service module is the only port present.
 
interface Vlan100
 ip address 10.66.79.180 255.255.255.224
 crypto map cisco
!
ip classless

!--- Configure the routing so that the device !--- is directed to reach its destination network.
 
ip route 0.0.0.0 0.0.0.0 10.66.79.161
!
global (outside) 1 interface

!--- NAT 0 prevents NAT for networks specified in the ACL inside_nat0_outbound.


nat (inside) 0 access-list inside_nat0_outbound
nat (inside) 1 192.168.5.0 255.255.255.0


!--- This access list (inside_nat0_outbound) is used with the nat zero command. !--- This prevents traffic which matches the access list from undergoing !--- network address translation (NAT). The traffic specified by this ACL is !--- traffic that is to be encrypted and !--- sent across the VPN tunnel. This ACL is intentionally !--- the same as (100). !--- Two separate access lists should always be used in this configuration.

access-list inside_nat0_outbound permit ip 192.168.5.0 0.0.0.255 192.168.6.0 0.0.0.255


!--- This is the crypto ACL.

access-list 100 permit ip 192.168.5.0 0.0.0.255 192.168.6.0 0.0.0.255

SV3-2# show run
Building configuration...

Current configuration : 1268 bytes
!
version 12.3
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname SV3-2
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
ip subnet-zero
!
ip audit notify log
ip audit po max-events 100
ip ssh break-string 
no ftp-server write-enable
!

!--- Define the Phase 1 policy.

crypto isakmp policy 1
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 10.66.79.180
!
! 

!--- Define the encryption policy for this setup.

crypto ipsec transform-set cisco esp-des esp-md5-hmac 
!

!--- Define a static crypto map entry for the peer !--- with mode ipsec-isakmp. This indicates that IKE !--- is used to establish the IPsec !--- SAs to protect the traffic !--- specified by this crypto map entry.
 
crypto map cisco 10 ipsec-isakmp 
 set peer 10.66.79.180
 set transform-set cisco 
 match address 100
!
!

!--- Apply the crypto map to the interface.

interface Ethernet0/0
 ip address 10.66.79.99 255.255.255.224
 half-duplex
 crypto map cisco
!
interface Ethernet0/1
 ip address 192.168.6.1 255.255.255.0
 half-duplex
 no keepalive
!
!
ip http server
no ip http secure-server
ip classless

!--- Configure the routing so that the device !--- is directed to reach its destination network.

ip route 0.0.0.0 0.0.0.0 10.66.79.97
!
!

!--- This is the crypto ACL.

access-list 100 permit ip 192.168.6.0 0.0.0.255 192.168.5.0 0.0.0.255
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
!
end