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至顶网网络频道IPSec和NAT配合使用的实验

IPSec和NAT配合使用的实验

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环境:两台博达2750路由器(1*E,1*FE),两台PC实验目的:两台路由器通过E0/1连接,实现IPSecVPN,使两台PC互访,并且都能分别通过路由器的NAT访问互联网。

作者:ChinaITLab 来源:ChinaITLab 2008年6月10日

关键字: NAT 网络地址转换 什么是nat

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  刚做完的实验,贴出来大家分享,虽然不是Cisco的设备,命令几乎完全相同,大家理解就行了。

  环境:两台博达2750路由器(1*E,1*FE),两台PC实验目的:两台路由器通过E0/1连接,实现IPSecVPN,使两台PC互访,并且都能分别通过路由器的NAT访问互联网。

配置:

  RouterARouterA#sh run

  Building configuration...

  Current configuration:

  !

  !version 1.3.1E

  service timestamps log date

  service timestamps debug date

  no service password-encryption

  !

  hostname RouterA

  !

  !

  !

  crypto ipsec transform-set one

  !

  crypto map aaa 100 ipsec-manual

  set peer 192.0.0.2

  set security-association inbound esp 256 cipher abcdabcdabcdabcd

  set security-association outbound esp 1257 cipher 1234123412341234

  set transform-set one

  match address test

  !

  !

  interface FastEthernet0/0

  ip address 172.16.1.1 255.255.255.0

  no ip directed-broadcast

  ip nat inside

  !

  interface Ethernet0/1

  ip address 192.0.0.1255.255.255.0

  no ip directed-broadcast

  crypto map aaa

  duplex half

  ip nat outside

  !

  interface Serial0/0

  no ip address

  no ip directed-broadcast

  !

  interface Async0/0

  no ip address

  no ip directed-broadcast

  !

  !

  ip route default 192.0.0.3

  !

  !

  !

  !

  !

  ip access-list standard nat-2

  permit 172.16.1.0 255.255.255.0

  !

  ip access-list extended test

  permit ip 192.0.0.1255.255.255.0 192.0.0.2 255.255.255.0!

  !

  !

  !

  ip nat outside source static 192.0.0.2 172.16.2.2

  ip nat inside source static 172.16.1.2 192.0.0.1

  ip nat inside source list nat-2 interface Ethernet0/1

  !

  !

  !

  RouterB:

  RouterB#sh run

  Building configuration...

  Current configuration:

  !

  !version 1.3.1E

  service timestamps log date

  service timestamps debug date

  no service password-encryption

  !

  hostname RouterB

  !

  !

  !

  crypto ipsec transform-set one

  !

  crypto map aaa 100 ipsec-manual

  set peer 192.0.0.1

  set security-association inbound esp 1257 cipher 1234123412341234

  set security-association outbound esp 256 cipher abcdabcdabcdabcd

  set transform-set one

  match address test

  !

  !

  interface FastEthernet0/0

  ip address 172.16.2.1 255.255.255.0

  no ip directed-broadcast

  duplex half

  ip nat inside

  !

  interface Ethernet0/1

  ip address 192.0.0.2 255.255.255.248

  no ip directed-broadcast

  crypto map aaa

  ip nat outside

  !

  interface Serial0/0

  no ip address

  no ip directed-broadcast

  !

  interface Async0/0

  no ip address

  no ip directed-broadcast

  !

  !

  ip route default 192.0.0.3

  !

  !

  !

  !

  !

  ip access-list standard internet

  permit 172.16.2.0 255.255.255.0

  !

  ip access-list extended test

  permit ip 192.0.0.2 255.255.255.0 192.0.0.1 255.255.255.0

  !

  !

  !

  !

  ip nat inside source static 172.16.2.2 192.0.0.2

  ip nat outside source static 192.0.0.1 172.16.1.2

  ip nat inside source list internet interface Ethernet0/1

  !

  !

  !

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