一、静态NAT配置图
1、配置主机地址:
PC1> ip 192.168.100.10 192.168.100.1
Checking for duplicate address...
PC1 : 192.168.100.10 255.255.255.0 gateway 192.168.100.1
PC2> ip 192.168.100.20 192.168.100.1
Checking for duplicate address...
PC1 : 192.168.100.20 255.255.255.0 gateway 192.168.100.1
PC3> ip 12.0.0.12 12.0.0.1
Checking for duplicate address...
PC1 : 13.0.0.13 255.255.255.0 gateway 13.0.0.1
2、配置R1路由
R1#conf t
R1(config)#int f0/0
R1(config-if)#ip add 192.168.100.1 255.255.255.0
R1(config-if)#no shut
R1(config)#int f0/1
R1(config-if)#ip add 12.0.0.1 255.255.255.0
R1(config-if)#no shut
3、关闭sw路由功能
no ip routing
4、配置主机地址
PC1> ip 192.168.100.10 192.168.100.1
Checking for duplicate address...
PC1 : 192.168.100.10 255.255.255.0 gateway 192.168.100.1
PC2> ip 192.168.100.20 192.168.100.1
Checking for duplicate address...
PC1 : 192.168.100.20 255.255.255.0 gateway 192.168.100.1
PC3> ip 12.0.0.12 12.0.0.1
Checking for duplicate address...
PC1 : 12.0.0.12 255.255.255.0 gateway 12.0.0.1
5、互联互通测试
PC1> ping 192.168.100.20
84 bytes from 192.168.100.20 icmp_seq=1 ttl=64 time=0.000 ms
84 bytes from 192.168.100.20 icmp_seq=2 ttl=64 time=0.000 ms
84 bytes from 192.168.100.20 icmp_seq=3 ttl=64 time=0.000 ms
84 bytes from 192.168.100.20 icmp_seq=4 ttl=64 time=0.000 ms
84 bytes from 192.168.100.20 icmp_seq=5 ttl=64 time=0.000 ms
PC1> ping 12.0.0.12
13.0.0.13 icmp_seq=1 timeout
13.0.0.13 icmp_seq=2 timeout
84 bytes from 12.0.0.12 icmp_seq=3 ttl=62 time=62.485 ms
84 bytes from 12.0.0.12 icmp_seq=4 ttl=62 time=69.039 ms
84 bytes from 12.0.0.12 icmp_seq=5 ttl=62 time=69.046 ms
6、配置静态NAT列表
R1(config)#ip nat inside source static 192.168.100.10 12.0.0.10
R1(config)#ip nat inside source static 192.168.100.20 12.0.0.20
R1(config)#int f0/0
R1(config-if)#ip nat inside
R1(config-if)#int f0/1
R1(config-if)#ip nat outside
R1(config-if)#end
R1#debug ip nat
IP NAT debugging is on
7、测试连通性
PC1> ping 12.0.0.12
13.0.0.13 icmp_seq=1 timeout
13.0.0.13 icmp_seq=2 timeout
84 bytes from 12.0.0.12 icmp_seq=3 ttl=62 time=84.698 ms
84 bytes from 12.0.0.12 icmp_seq=4 ttl=62 time=85.265 ms
84 bytes from 12.0.0.12 icmp_seq=5 ttl=62 time=69.205 ms
*Mar 1 00:23:50.619: NAT*: s=192.168.100.10 -> 12.0.0.10,d=12.0.0.12[5464]
*Mar 1 00:23:51.831: NAT*: s=192.168.100.10->12.0.0.10, d=12.0.0.12 [5465]
#将目标地址12.0.0.10转换成192.168.100.10,这个就是静态地址转换的过程
二、NAT静态端口映射配置
1、实验环境
Linux搭建的一台Web服务器,局域网地址为192.168.100.100,默认端口号80。局域网的网关192.168.100.1,映射地址:192.168.100.100:80—>12.0.0.100:8080。
别人只能看到公网IP地址,私网地址不能被直接访问。
2、实验目的
广域网的客户机无法直接访问100.100地址,如果想访问的话就需要做端口映射。
3、实验图
4、在Linux中安装httpd的服务软件包,并开启httpd服务,写测试网页等
[[email protected] ~]# yum install httpd -y
[[email protected] ~]# vim /var/www/html/index.html //写测试网页
<h1>this is inside web</h1>
[[email protected] ~]# systemctl start httpd
[[email protected] ~]# systemctl stop firewalld.service
[[email protected] ~]# setenforce 0
5、配置网关地址
R1#conf t
R1(config)#int f0/0
R1(config-if)#ip add 192.168.100.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#ex
R1(config)#int f0/1
R1(config-if)#ip add 12.0.0.1 255.255.255.0
R1(config-if)#no shut
R1(config-if)#ex
6、通过centos中的浏览器可看到测试页面(ping 192.168.100.100或127.0.0.1都行)
7、给Linux绑定VMnet1网卡,给Host绑定VMnet2网卡,配置静态地址
8、访问对方192.168.100.100,此时是可以访问的,但是真实情况下是无法直接访问对方私有地址的
9、静态端口映射配置
R1(config)# ip nat inside source static tcp 192.168.100.100 80 12.0.0.100 8080 extendable
R1(config)#int f0/0
R1(config-if)#ip nat inside
R1(config-if)#int f0/1
R1(config-if)#ip nat outsid
R1(config-if)#end
R1#debug ip nat
IP NAT debugging is on
*Mar 1 00:36:59.327: NAT*: TCP s=49160, d=8080->80
*Mar 1 00:36:59.327: NAT*: s=12.0.0.12, d=12.0.0.100->192.168.100.100 [364]
# 端口和地址都进行了转换
10、再次尝试使用公网地址在win7进行访问,此时可以成功,实验成功!
原文地址:https://blog.51cto.com/14475593/2443450
时间: 2024-11-02 16:30:50