争怎路由网/路由器百科/内容

华为路由器设置容易NAT案例(华为路由器nat设置案例)

路由器百科2024-11-02 阅读

session 1 NAT



NAT网络地址转换,将内网用户私有ip地址转换为公网ip地址实现上网。

简单的配置分为静态NAT、动态NAT、端口PAT、NAT-server发布等,下面以实际配置为例:

一、静态NAT转换

AR1上配置

interface GigabitEthernet0/0/0

ip address 192.168.1.1 255.255.255.0

interface GigabitEthernet0/0/1

ip address 192.168.2.1 255.255.255.0

interface GigabitEthernet0/0/2

ip address 12.1.1.1 255.255.255.0

nat server global 12.1.1.100 inside 192.168.2.10 在接口下将192.168.2.10转换成12.1.1.100地址访问公网

nat static enable 启用nat功能(全局或者接口都可以配置)

或者全局下也可以配置静态NAT:

[Huawei] nat static global 12.1.1.10 inside 192.168.1.10 netmask 255.255.255.255

AR2上配置

interface GigabitEthernet0/0/0 AR2模拟internet设备,配置公网ip即可

ip address 12.1.1.2 255.255.255.0

二、动态NAT配置

AR1上配置

acl number 2000

rule 1 permit source 192.168.1.0 0.0.0.3 使用acl匹配需要进行转换的内网ip地址(1.1-1.8这8个ip地址)

nat address-group 1 12.1.1.10 12.1.1.18 配置nat转换用的公网地址池1,地址范围12.1.1.10~12.1.1.18

interface GigabitEthernet0/0/0

ip address 192.168.1.1 255.255.255.0

interface GigabitEthernet0/0/1

interface GigabitEthernet0/0/2

ip address 12.1.1.1 255.255.255.0

nat outbound 2000 address-group 1 no-pat 在接口出方向上使用动态NAT,不做PAT端口复用

AR2上配置

interface GigabitEthernet0/0/0

ip address 12.1.1.2 255.255.255.0

nat static enable

三、端口多路复用PAT配置

AR1上的配置

acl number 2000 使用acl匹配所有ip流量

rule 1 permit

interface GigabitEthernet0/0/0

ip address 192.168.1.1 255.255.255.0

interface GigabitEthernet0/0/2

ip address 12.1.1.1 255.255.255.0

nat outbound 2000 在出接口上使用PAT端口复用

或者可以使用loopback接口(将公网ip配置在loopback接口上)来做PAT接口ip地址,这样当物理接口ip地址没有了也不会影响NAT,提高稳定性:

[Huawei-GigabitEthernet0/0/2]nat outbound 2000 interface loopback 0

AR2上配置

interface GigabitEthernet0/0/0

ip address 12.1.1.2 255.255.255.0

nat static enable

验证可以使用PC2去ping模拟internet的AR2的接口ip:12.1.1.2

PC>ping 12.1.1.2

Ping 12.1.1.2: 32 data bytes, Press Ctrl_C to break

From 12.1.1.2: bytes=32 seq=1 ttl=254 time=47 ms

From 12.1.1.2: bytes=32 seq=2 ttl=254 time=32 ms

From 12.1.1.2: bytes=32 seq=3 ttl=254 time=16 ms

From 12.1.1.2: bytes=32 seq=4 ttl=254 time=31 ms

From 12.1.1.2: bytes=32 seq=5 ttl=254 time=15 ms

--- 12.1.1.2 ping statistics ---

5 packet(s) transmitted

5 packet(s) received

0.00% packet loss

round-trip min/avg/max = 15/28/47 ms

PC>

四、NAT发布内网服务器到公网,供公网用户访问。

AR1上配置

interface GigabitEthernet0/0/0

ip address 192.168.1.1 255.255.255.0

interface GigabitEthernet0/0/2

ip address 12.1.1.1 255.255.255.0

nat server global 12.1.1.100 inside 192.168.1.10 发布内网PC服务器到公网,将192.168.1.10发布到公网使用ip地址12.1.1.100

AR2上配置

interface GigabitEthernet0/0/0

ip address 12.1.1.2 255.255.255.0

nat static enable

测试,使用internet上的AR2来ping发布的PC的外网ip地址12.1.1.100

[Huawei]ping 12.1.1.100

PING 12.1.1.100: 56 data bytes, press CTRL_C to break

Reply from 12.1.1.100: bytes=56 Sequence=1 ttl=127 time=70 ms

Reply from 12.1.1.100: bytes=56 Sequence=2 ttl=127 time=60 ms

Reply from 12.1.1.100: bytes=56 Sequence=3 ttl=127 time=60 ms

Reply from 12.1.1.100: bytes=56 Sequence=4 ttl=127 time=50 ms

Reply from 12.1.1.100: bytes=56 Sequence=5 ttl=127 time=50 ms

--- 12.1.1.100 ping statistics ---

5 packet(s) transmitted

5 packet(s) received

0.00% packet loss

round-trip min/avg/max = 50/58/70 ms

[Huawei]



……

相关阅读