Cisco IOS Site-to-Site Pre-share Key ××× <?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

应用情况,公司总部分总互连,都有公网IP

R1路由器上连通性配置

R1(config)#interface e0

R1(config-if)#ip address <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" />10.1.1.1 255.255.255.0

R1(config-if)#no shutdown

 R1(config)#interface e1

R1(config-if)#ip address 1.1.1.1 255.255.255.0

R1(config-if)#no shutdown 

R1(config)#ip route 0.0.0.0 0.0.0.0 10.1.1.2

 

R2路由器上连通性配置

R2(config)#interface e0

R2(config-if)#ip address 1.1.1.2 255.255.255.0

R2(config-if)#no shutdown

 R2(config)#interface e1

 R2(config-if)#ip address 2.2.2.2 255.255.255.0

R2(config-if)#no shutdown 

R2(config)#ip route 0.0.0.0 0.0.0.0 10.1.1.1

 

R1路由器IpSec配置

R1(config)#crypto isakmp enable (optional)默认启用

R1路由器IpSec isakmp 配置(阶段一的策略)

R1(config)#crypto isakmp policy 10

R1(config-isakmp)#hash md5

R1(config-isakmp)#authentication pre-shared

R1(config-isakmp)#encryption 3des

R1(config-isakmp)#group 2

R1路由器Pre-Share认证配置

R1(config)#crypto isakmp key cisco address 10.1.1.2

R1路由器IpSec变换集配置(阶段二的策略)

R1(config)#crypto ipsec transform-set cisco esp-3des esp-md5-hmac  R1 (cfg-crypto-trans)#mode tunnel

R1路由器加密图的配置

R1(config)#crypto map cisco10 ipsec-isakmp

 R1(config-crypto-map)#set peer 10.1.1.2

R1(config-crypto-map)#set transform-set cisco

  R1(config-crypto-map)#match address 101

R1路由器定义感兴趣流量

R1(config)#access-list 101 permit ip 1.1.1.0 0.0.0.255 2.2.2.0 0.0.0.255 R1路由器加密图绑定到接口

R1(config)#interface e0

R1(config-if)#crypto map cisco

4R2路由器IpSec配置

R2(config)#crypto isakmp enable  (optional)默认启用

R2路由器IpSec isakmp 配置(阶段一的策略)

R2(config)#crypto isakmp policy 10

R2(config-isakmp)#hash md5

R2(config-isakmp)#authentication pre-share

 R2(config-isakmp)#encryption 3des

R2(config-isakmp)#group 2

R2路由器Pre-Share认证配置

R2(config)#crypto isakmp key cisco address 10.1.1.1

R2路由器IpSec变换集配置(阶段二的策略)

R2(config)#crypto ipsec transform-set cisco esp-3des esp-md5-hmac

 R2(cfg-crypto-trans)#mode tunnel

 R2路由器加密图的配置

R2(config)#crypto map cisco 10 ipsec-isakmp

 R2(config-crypto-map)#set peer 10.1.1.1

 R2(config-crypto-map)#set transform-set cisco

  R2(config-crypto-map)#match address 101

R2路由器定义感兴趣流量

R2(config)#access-list 101 permit ip 2.2.2.0 0.0.0.255 1.1.1.0 0.0.0.255
R2路由器加密图绑定到接口

R2(config)#interface e0

R2(config-if)#crypto map cisco