4.1 NAT-地址转换. 1
4.1.1 用出接口地址做Easy nat 1
4.1.2 地址池方式做nat 2
4.1.3 ISDN拨号做nat上网. 3
4.1.4 一个以太口也做nat转换. 4
4.1.5 对外提供FTP，www等服务. 5
4.1 NAT-地址转换
4.1.1 用出接口地址做Easy nat
【Router】
当前路由器提示视图
依次输入的配置命令，重要的命令红色突出显示
简单说明
!
适用版本vrp1.74及1.44
[Router]
acl 1 match-order auto
[Router-acl1]
rule normal permit source 10.0.0.0 0.0.0.255
[Router-acl1]
rule normal deny source any
!
[Router]
interface Ethernet0
[Router-Ethernet0]
ip address 10.0.0.1 255.255.255.0
!
[Router]
interface Ethernet1
[Router-Ethernet1]
ip address 202.1.1.1 255.255.255.0
[Router-Ethernet1]
nat outbound 1 interface
!
[Router]
ip route-static 0.0.0.0 0.0.0.0 202.1.1.2 PReference 60
[Router]
!
[Router]
return
4.1.2 地址池方式做nat
【Router】
当前路由器提示视图
依次输入的配置命令，重要的命令红色突出显示
简单说明
！
适用版本vrp1.74及1.44
[Router]
nat address-group 1 202.1.1.1 202.1.1.6 pool1
!
[Router]
acl 101 acl 1 match-order auto
[Router-acl1]
rule normal permit source 10.0.0.0 0.0.0.255
[Router-acl1]
rule normal deny source any
!
[Router]
interface Ethernet0
[Router-Ethernet0]
ip address 10.0.0.1 255.255.255.0
!
[Router]
interface Ethernet1
[Router-Ethernet1]
ip address 202.1.1.1 255.255.255.0
[Router-Ethernet1]
nat outbound 1 pool pool1
!
[Router]
ip route-static 0.0.0.0 0.0.0.0 202.1.1.2 preference 60
!
return
4.1.3 ISDN拨号做nat上网
【Router】
当前路由器提示视图
依次输入的配置命令，重要的命令红色突出显示
简单说明
!
适用版本vrp1.74及1.44
[Router]
dialer-rule 1 ip permit
[Router]
!
acl 1 match-order auto
[Router-acl1]
rule normal permit source 10.0.0.0 0.0.0.255
[Router-acl1]
rule normal deny source any
!
内网的以太口地址根据实际情况来配置
[Router]
interface Ethernet0
[Router-Ethernet0]
ip address 10.0.0.1 255.255.255.0
[Router-Ethernet0]
!
[Router-Serial0]
interface Bri0
[Router-Bri0]
link-protocol ppp
[Router-Bri0]
ppp mp
使能128K两B拨号
[Router-Bri0]
ppp pap local-user 16900 passWord simple 16900
[Router-Bri0]
ip address ppp-negotiate
[Router-Bri0]
dialer enable-circular
ISDN拔号不用配置dialer enable-legacy,假如是灵活DDR拔号，还应配置undo dialer enable-legacy
[Router-Bri0]
dialer-group 1
[Router-Bri0]
dialer number 16900
[Router-Bri0]
nat outbound 1 interface
!
[Router]
ip route-static 0.0.0.0 0.0.0.0 bri 0 preference 60
使用isdn-bri拨号
[Router]
!
[Router]
return
4.1.4 一个以太口也做nat转换
【Router】
当前路由器提示视图
依次输入的配置命令，重要的命令红色突出显示
简单说明
!
适用版本vrp1.74及1.44
[Router]
acl 101 match-order auto
[Router-acl101]
rule normal deny ip source 10.0.0.0 0.0.0.255 destination 10.0.0.1 0.0.0.0
[Router-acl101]
rule normal permit source 10.0.0.0 0.0.0.255
[Router-acl101]
rule normal deny source any
!
[Router]
interface Ethernet0
[Router-Ethernet0]
ip address 10.0.0.1 255.255.255.0
!
[Router]
interface Ethernet0
[Router-Ethernet0]
ip address 202.1.1.1 255.255.255.0
[Router-Ethernet0]
ip address 10.0.0.1 255.255.255.0 sub
[Router-Ethernet0]
nat outbound 101 interface
!
[Router]
ip route-static 0.0.0.0 0.0.0.0 202.1.1.2 preference 60
[Router]
!
[Router]
return
说明：上例不推荐使用。
4.1.5 对外提供ftp，www等服务
以www服务为例,除了3.1.1和3.1.2的配置,公网接口需要增加如下配置:
[Router-Ethernet1]nat server global 202.1.1.2 www inside 10.0.0.2 www tcp
注重:假如需要其他用户可以ping通内部对外提供服务的服务器,必须增加如下配置:
[Router-Ethernet1]nat server global 202.1.1.2 any inside 10.0.0.2 any icmp
注重:内部用户不能使用公网地址来访问内部服务器,必须使用内网地址访问.
如上例子:10.0.0.0/24网段的用户,不能访问http://202.1.1.2,而只能访问http://10.0.0.2
附件
网络协议-nat-地址转换.doc
