IPSec VPN配置
一、基本配置
1、R1配置:
en
conf t
int f0/0
ip add 192.168.10.1 255.255.255.0
no sh
int f0/1
ip add 202.100.10.1 255.255.255.0
no sh
exit
ip route 0.0.0.0 0.0.0.0 202.100.10.2
do wr
2、R2配置
en
conf t
int f0/0
ip add 202.100.10.2 255.255.255.0
no sh
int f0/1
ip add 202.100.20.2 255.255.255.0
no sh
do wr
3、R3配置
en
conf t
int f0/1
ip add 202.100.20.1 255.255.255.0
no sh
int f0/0
ip add 192.168.20.1 255.255.255.0
no sh
ip route 0.0.0.0 0.0.0.0 202.100.20.2
do wr
二、NAT及NAT豁免配置
R1总体配置:
1、定义NAT的ACL列表
ip access-list extended nat
deny ip 192.168.10.0 0.0.0.255 192.168.20.0 0.0.0.255
permit ip any any
2、配置PAT,应用ACL列表
ip nat inside source list nat int f0/1 overload
3、定义内部,外部接口:
int f0/1
ip nat outside
int f0/0
ip nat inside
三、VPN配置:
1,配置阶段1的ISAKMP(IKE)安全策略:
用于建立VPN同行的管理连接
crypto isakmp policy 1
authentication pre-share
encryption 3des
hash sha
group 2
exit
crypto isakmp key 6 benet-key address 202.100.20.1 255.255.255.0
show crypto isakmp key
2、配置阶段2的数据传输集:
用于定义VPN通信数据传输连接的加密协议、加密算法、散列算法、VPN的连接模式
crypto ipsec transform-set benet-set esp-3des esp-sha-hmac
mode tunnel 默认
3、定义进行VPN通信的数据流量:
ip access-list extended VPN
permit ip 192.168.10.0 0.0.0.255 192.168.20.0 0.0.0.255
deny ip any any
4、配置阶段2的映射:
crypto map benet-map 1 ipsec-isakmp
match address VPN
set peer 202.100.20.1
set transform-set benet-set
set pfs group2
5、将阶段2的映射应用到外网接口
int f 0/1
crypto map benet-map
R3总体配置:
ip access-list extended nat
deny ip 192.168.20.0 0.0.0.255 192.168.10.0 0.0.0.255
permit ip any any
ip nat inside source list nat int f0/1 overload
int f0/1
ip nat outside
int f0/0
ip nat inside
crypto isakmp policy 1
authentication pre-share
encryption 3des
hash sha
group 2
exit
crypto isakmp key 6 benet-key address 202.100.10.1 255.255.255.0
show crypto isakmp key
crypto ipsec transform-set benet-set esp-3des esp-sha-hmac
ip access-list extended VPN
permit ip 192.168.20.0 0.0.0.255 192.168.10.0 0.0.0.255
deny ip any any
crypto map benet-map 1 ipsec-isakmp
match address VPN
set peer 202.100.10.1
set transform-set benet-set
set pfs group2
int f0/1
crypto map benet-map
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开心源码网 » IPSec VPN配置