拓朴图

IPSEC ×××实验四:动态IP建立IPSEC ×××_第1张图片

实验说明:

1、总部路由器为固定IP,分公司路由器为ADSL动态IP,现在分公司要与总部建立起IPSEC×××实现192.168.1.0/24与172.16.1.0/24两个网络的互通。
2、R4 S1/0接口为了实验方便就直接配了一个IP 2.2.2.2,实际当中应该为pppOE拨号。

 

上配置:

R2:

interface Serial1/0
 ip address 192.168.1.1 255.255.255.0
no sh
!
interface Serial1/1
 ip address 1.1.1.1 255.255.255.0
no sh
 crypto map mymap
exit

ip route 0.0.0.0 0.0.0.0 Serial1/1

ip access-list extended ipsec***
 permit ip 192.168.1.0 0.0.0.255 any

 

crypto isakmp policy 10
 encr 3des
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 0.0.0.0 0.0.0.0

crypto ipsec transform-set myset esp-3des esp-md5-hmac

crypto dynamic-map dymap 10
 set transform-set myset
 match address ipsec***
crypto map mymap 10 ipsec-isakmp dynamic dymap

 

R3

interface Serial1/0
 ip address 2.2.2.2 255.255.255.0
 serial restart-delay 0
 crypto map mymap
no sh
!
interface Serial1/2
 ip address 172.16.1.1 255.255.255.0
 no sh
exit

ip route 0.0.0.0 0.0.0.0 Serial1/0

ip access-list extended ipsec***
 permit ip 172.16.1.0 0.0.0.255 192.168.1.0 0.0.0.255

 

crypto isakmp policy 10
 encr 3des
 hash md5
 authentication pre-share
 group 2
crypto isakmp key cisco address 1.1.1.1
crypto ipsec transform-set myset esp-3des esp-md5-hmac
crypto map mymap 10 ipsec-isakmp
 set peer 1.1.1.1
 set transform-set myset
 match address ipsec***

 

我们可以看到,总部那边×××视图配置有点不同(红色显示部分),使用了动态视图。

实验结果:

pc2#ping 192.168.1.2

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.1.2, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 32/56/76 ms

实验 成功