Cisco 路由器 VPN典型配置

对于思科路由器，如果进行VPN配置，要进行怎样的配置呢？下面文章主要从SHOW RUN中介绍了配置的具体操作步骤和基本的配置命令。

本文通过VPN技术实现对两部分网络的互联，模拟ISP，贴近实用性，文章主要向我们展示了具体的操作步骤，主要是输入的基本命令。

本实验借助于Cisco 2600 路由器，通过VPN技术实现蓝色学苑，一分部和二分部之间的网络互联，为了贴近实用性，中间仍然通过Cisco 3640 模拟ISP 。

通过在网络基础部分的介绍，各位应该对VPN技术有了一定的认识，在VPN的实现中主要有两个方面：建立VPN Tunnel和IPSec的加密

Cisco 2600 with GRE Tunnel

Current configuration

!

version 12.0

sevice timestamps debug uptime

sevice timestamps log uptime

sevice password-encryption

!

hostname bluestudy1

!

enable passsword cisco

!

memory-size iomem 25

ip subnet-zero

no ip domain-lookup

!

interface Tunnel0

ip address 172.16.101.1 255.255.255.0

no ip directed-broadcast

ip mtu 1467

tunnel sourece 199.1.1.2

tunnel destination 199.1.2.2

!

interface serial0/0

no ip address

no ip directed-broadcast

encapsulation frame-relay

no ip mroute-cache

frame-relay lmi-type ansi

!

interface serial0/0.1 point-to-point

description connected to internet

ip address 199.1.1.2 255.255.255.248

no ip directed-broadcast

ip nat outside

no arp frame-relay

frame-relay interface-dlci 111

!

!

interface ethernet0/0

ip address 172.16.1.1 255.255.255.0

no ip directed-broadcast

ip nat inside

!

router eigrp 100

network 172.16.0.0

!

router rip

version 2

network 172.16.0.0

no auto-summary

!

ip nat pool bluestudy 199.1.1.3 199.1.1.10 netmask 255.255.255.248

ip nat inside sourece list 2 pool bluestudy overload

ip nat inside sourece static 172.16.1.3 199.1.1.5

ip classless

ip route 0.0.0.0 0.0.0.0 srial0/0.1

ip http server

!

access-list 2 permit 172.16.1.0 0.0.0.255

snmp-server community public RO

!

line con 0

exec-timeout 0 0

password cisco

login

transport input none

line aux 0

line vty 0 4

password cisco

login

!

end

Cisco 2600 Configuration with IPSec

Current configuration

!

version 12.0

sevice timestamps debug uptime

sevice timestamps log uptime

sevice password-encryption

!

hostname bluestudy1

!

enable passsword cisco

!

memory-size iomem 25

ip subnet-zero

no ip domain-lookup

!

crypto isakmp key policy 1

authentication pre-share

group 2

crypto isakmp key slurpee-machine address 172.16.101.2

!

crypto ipsec transform-set test ah-sha-hmac esp-des esp-sha-hmac

!

set transform-set test

!

crypto map bluestudy 10 ipsec-isakmp

set peer 172.16.101.2

set transform-set test

match address 101

!

interface Tunnel0

ip address 172.16.101.1 255.255.255.0

no ip directed-broadcast

ip mtu 1467

tunnel sourece 199.1.1.2

tunnel destination 199.1.2.2

crypto map bluestudy

!

interface serial0/0

no ip address

no ip directed-broadcast

encapsulation frame-relay

no ip mroute-cache

frame-relay lmi-type ansi

!

interface serial0/0.1 point-to-point

description connected to internet

ip address 199.1.1.2 255.255.255.248

no ip directed-broadcast

ip nat outside

no arp frame-relay

frame-relay interface-dlci 111

!

!

interface ethernet0/0

ip address 172.16.1.1 255.255.255.0

no ip directed-broadcast

ip nat inside

!

router eigrp 100

network 172.16.0.0

!

router rip

version 2

network 172.16.0.0

no auto-summary

!

ip nat pool bluestudy 199.1.1.3 199.1.1.10 netmask 255.255.255.248

ip nat inside sourece list 2 pool bluestudy overload

ip nat inside sourece static 172.16.1.3 199.1.1.5

ip classless

ip route 0.0.0.0 0.0.0.0 srial0/0.1

ip http server

!

access-list 2 permit 172.16.1.0 0.0.0.255

access-list 101 permit ip 172.16.1.0 0.0.0.255 172.16.2.0 0.0.0.255(对方网络，只有到这个网络的信息包才加密)

snmp-server community public RO

!

line con 0

exec-timeout 0 0

password cisco

login

transport input none

line aux 0

line vty 0 4

password cisco

login

!

end