5.3.8: One reason you may want to configure static NAT is to assign a public address to a server connected to your private network. To configure static NAT, you have to designate an inside interface—the interface connected to the private network. You also designate the interface connected to the outside world as the outside interface. As soon as you have properly configured IP addresses on your router interfaces, use the following commands to configure static NAT:
ip nat outside ip nat inside ip nat inside source static local-IP-address global-IP-address
Router> enable Router# configure terminal Router(config)# interface serial 0 Router(config-if)# ip nat outside Router(config-if)# interface fa 0/0 Router(config-if)# ...