Nat; Visual Server - Sapido GR-1102 User Manual

5.3

NAT

NAT is a method of mapping one or more IP addresses and/or services ports into different
specified services, where NAT stands for Network Address Translation. It allows the
internal IP addresses of many computers on a Local Area Network (LAN) to be translated
to one public address, saving users' cost. It also plays a security role by obscuring the
true IP addresses of important machines from potential hackers on the Internet. For
convenience, we called a router having the NAT facility as a NAT-enabled router.
5.3.1

Visual Server

To offer services, like WWW, FTP, provided by a server in your local network accessible
for outside users, you should specify a local IP address to the server. Then, add the IP
address and network protocol type, port number, and name of the service in the following
list. Based on the list, the gateway will forward service request from outside users to the
corresponding local server.
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