【思科路由器站点到站点VPN】分享给互联网从爱好者学习参考。
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 e0R1（config-if）#ip address 10.1.1.1 255.255.255.0R1（config-if）#no shutdownR1（config）#interface e1R1（config-if）#ip address 1.1.1.1 255.255.255.0R1（config-if）#no shutdownR1（config）#ip route 0.0.0.0 0.0.0.0 10.1.1.2R2路由器上连通性配置R2（config）#interface e0R2（config-if）#ip address 1.1.1.2 255.255.255.0R2（config-if）#no shutdownR2（config）#interface e1R2（config-if）#ip address 2.2.2.2 255.255.255.0R2（config-if）#no shutdownR2（config）#ip route 0.0.0.0 0.0.0.0 10.1.1.1R1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 10R1（config-isakmp）#hash md5R1（config-isakmp）#authentication pre-sharedR1（config-isakmp）#encryption 3desR1（config-isakmp）#group 2R1路由器Pre-Share认证配置R1（config）#crypto isakmp key cisco address 10.1.1.2R1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 tunnelR1路由器加密图的配置R1（config）#crypto map cisco10 ipsec-isakmpR1（config-crypto-map）#set peer 10.1.1.2R1（config-crypto-map）#set transform-set ciscoR1（config-crypto-map）#match address 101R1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 e0R1（config-if）#crypto map cisco4、R2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 10R2（config-isakmp）#hash md5R2（config-isakmp）#authentication pre-shareR2（config-isakmp）#encryption 3desR2（config-isakmp）#group 2R2路由器Pre-Share认证配置R2（config）#crypto isakmp key cisco address 10.1.1.1R2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-hmacR2（cfg-crypto-trans）#mode tunnelR2路由器加密图的配置R2（config）#crypto map cisco 10 ipsec-isakmpR2（config-crypto-map）#set peer 10.1.1.1R2（config-crypto-map）#set transform-set ciscoR2（config-crypto-map）#match address 101R2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 0.0.0.255R2路由器加密图绑定到接口R2（config）#interface e0R2（config-if）#crypto map cisco
