实验拓扑

R1 配置

[R1-GigabitEthernet0/0/1]nat server protocol tcp global 12.1.1.1 www inside 192.
168.1.8 www 

R1 接口配置法

[R1-GigabitEthernet0/0/1]nat server protocol tcp global current-interface www in
side 192.168.1.8 www