思科路由器源NAT让内网用户上互联网

思科路由器源NAT让内网用户上互联网

源NAT映射(访问互联网)：

access-list 1 permit 192.168.0.0 0.0.0.255

ip nat inside source list 1 interface GigabitEthernet0/0 overload

interface GigabitEthernet0/0
 description To Internet
 ip address 公网ip地址 255.255.255.252
 ip nat outside
 ip virtual-reassembly in
 duplex auto
 speed auto
!
interface GigabitEthernet0/1
 description To InsideNetwork
 ip address 192.168.0.1 255.255.255.0
 ip nat inside
 ip virtual-reassembly in
 duplex auto
 speed auto

服务器映射：

思科路由器：

思科路由器：把内网服务器 192.168.0.104的tcp80端口从外联口 FastEthernet0/0/0映射出去。
全局配置：
ip nat inside source static tcp 192.168.1.200 80 interface FastEthernet0/0/0 80