NAT を使用する Router-to-Router Dynamic-to-Static IPSec の設定

Current configuration:
!
version 12.2
service timestamps debug uptime 
service timestamps log up time
no service password-encryption
!
hostname sam-i-am
!
ip subnet-zero
!

!--- These are the IKE policies.

crypto isakmp policy 1

!--- Defines an Internet Key Exchange (IKE) policy. !--- Use the crypto isakmp policy command !--- in global configuration mode. !--- IKE policies define a set of parameters to be used !--- during the IKE phase I negotiation.

hash md5
authentication pre-share

!--- Specifies pre-shared keys as the authentication method.

crypto isakmp key cisco123 address 0.0.0.0 0.0.0.0

!--- Configures a pre-shared authentication key, !--- used in global configuration mode.

!

!--- These are the IPSec policies.

crypto ipsec transform-set rtpset esp-des esp-md5-hmac

!--- A transform set is an acceptable combination !--- of security protocols and algorithms. !--- This command defines a transform set !--- that has to be matched on the peer router.

crypto dynamic-map rtpmap 10

!--- Use dynamic crypto maps to create policy templates !--- that can be used to process negotiation requests !--- for new security associations (SA) from a remote IPSec peer, !--- even if you do not know all of the crypto map parameters !--- required to communicate with the remote peer, !--- such as the IP address of the peer.
 
set transform-set rtpset

!--- Configure IPSec to use the transform set "rtpset" !--- that was defined previously.

match address 115

!--- Assign an extended access list to a crypto map entry !--- that is used by IPSec to determine which traffic !--- should be protected by crypto and which traffic !--- does not need crypto protection.
 
crypto map rtptrans 10 ipsec-isakmp dynamic rtpmap

!--- Specifies that this crypto map entry is to reference !--- a preexisting dynamic crypto map.
 
!
interface Ethernet0
 ip address 10.2.2.3 255.255.255.0
 no ip directed-broadcast
 ip nat inside
 
 !--- This indicates that the interface is connected to the !--- inside network, which is subject to NAT translation.
 
 no mop enabled
!
interface Serial0
 ip address 99.99.99.1 255.255.255.0
 no ip directed-broadcast
 ip nat outside
 
 !--- This indicates that the interface is connected !--- to the outside network.
 
crypto map rtptrans

!--- Use the crypto map interface configuration command !--- to apply a previously defined crypto map set to an interface.

!
ip nat inside source route-map nonat interface Serial0 overload

!--- Except the private network from the NAT process.

ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
no ip http server
!
access-list 115 permit ip 10.2.2.0 0.0.0.255 10.1.1.0 0.0.0.255
access-list 115 deny ip 10.2.2.0 0.0.0.255 any

!--- Include the private-network-to-private-network traffic !--- in the encryption process.

access-list 120 deny ip 10.2.2.0 0.0.0.255 10.1.1.0 0.0.0.255
access-list 120 permit ip 10.2.2.0 0.0.0.255 any

!--- Except the private network from the NAT process.

route-map nonat permit 10
 match ip address 120
!
line con 0
 transport input none
line aux 0
line vty 0 4
 password ww
 login
!
end

Current configuration:
!
version 12.2
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname dr_whoovie
!
ip subnet-zero
!

!--- These are the IKE policies.

crypto isakmp policy 1

!--- Defines an Internet Key Exchange (IKE) policy. !--- Use the crypto isakmp policy command !--- in global configuration mode. !--- IKE policies define a set of parameters to be used !--- during the IKE phase I negotiation.

 hash md5
authentication pre-share

!--- Specifies pre-shared keys as the authentication method.

crypto isakmp key cisco123 address 99.99.99.1 

!--- Configures a pre-shared authentication key, !--- used in global configuration mode.

!

!--- These are the IPSec policies.

crypto ipsec transform-set rtpset esp-des esp-md5-hmac

!--- A transform set is an acceptable combination !--- of security protocols and algorithms. !--- This command defines a transform set !--- that has to be matched on the peer router.

!
crypto map rtp 1 ipsec-isakmp  

!--- Creates a crypto map and indicates that IKE will be used !--- to establish the IPSec SAs for protecting !--- the traffic specified by this crypto map entry.

set peer 99.99.99.1

!--- Use the set peer command to specify an IPSec peer in a crypto map entry.

set transform-set rtpset 

!--- Configure IPSec to use the transform set "rtpset" !--- that was defined previously.

 match address 115

!--- Include the private-network-to-private-network traffic !--- in the encryption process.

!
interface Ethernet0
ip address 10.1.1.1 255.255.255.0
 no ip directed-broadcast
 ip nat inside

 !--- This indicates that the interface is connected to the !--- inside network, which is subject to NAT translation.

 no mop enabled
!
interface Serial0
 ip address negotiated

 !--- Specifies that the IP address for this interface !--- is obtained via PPP/IPCP address negotiation. !--- This example was set up in a lab with an IP address !--- assigned with IPCP.

 no ip directed-broadcast
 ip nat outside

 !--- This indicates that the interface is connected !--- to the outside network.

 encapsulation ppp
 no ip mroute-cache
 no ip route-cache
 crypto map rtp

 !--- Use the crypto map interface configuration command !--- to apply a previously defined crypto map set to an interface.

ip nat inside source route-map nonat interface Serial0 overload

!--- Except the private network from the NAT process.

ip classless
ip route 0.0.0.0 0.0.0.0 Serial0
no ip http server
!
access-list 115 permit ip 10.1.1.0 0.0.0.255 10.2.2.0 0.0.0.255
access-list 115 deny ip 10.1.1.0 0.0.0.255 any

!--- Include the private-network-to-private-network traffic !--- in the encryption process.

access-list 120 deny   ip 10.1.1.0 0.0.0.255 10.2.2.0 0.0.0.255
access-list 120 permit ip 10.1.1.0 0.0.0.255 any

!--- Except the private network from the NAT process.

dialer-list 1 protocol ip permit
dialer-list 1 protocol ipx permit
route-map nonat permit 10
 match ip address 120
!
line con 0
 transport input none
line aux 0
line vty 0 4
 password ww
 login
!
end