Справочник Пользователя для Netopia R5100

NAT works by remapping the source IP address of traffic from the LAN to a single static or dynamically assigned 
IP address shown to the remote side of the router.

The feature can be implemented on a per–connection profile basis. The network router can use two or more 
connection profiles simultaneously to connect to two or more networks. Each profile can have NAT enabled.

When NAT is enabled, the Netopia R5000 Series Router can use either a statically assigned IP address or one 
dynamically assigned each time the router connects to the ISP. While a dynamically assigned IP address offers 
the ISP more flexibility, it does have an impor tant limitation: the router requires a static IP address to suppor t 
Web, FTP, or other ser vices available to the WAN. To suppor t these ser vices with NAT enabled, a ser vice can be 
associated with only one machine on the LAN. 

When connected to the Internet or some other large network using NAT, the individual machines on your LAN are 
not directly accessible from the WAN. NAT provides an inherently secure method of connection to the outside 
world.