Eicon Networks Diva 2440 User's Guide download pdf (Page 55)

Advanced Topics Page 55

Example: Allowing Web or FTP Request using

NAT Static Mappings

Two of the most common reasons to use NAT static mappings are to run a web server or FTP

server on a computer connected to the Diva 2440. Use the following diagram as a reference as

you examine the NAT mapping examples that follow. Note that the Diva 2440 has been

assigned the static IP address 223.132.212.39.

Configuring for

FTP Traffic

FTP traffic is carried on TCP ports 20 and 21. Therefore, the following two

NAT mappings would be required:

Configuring for Web

Traffic

Web traffic is carried on TCP port 80. Therefore, the following NAT

mapping would be required:

To access the web server, a remote computer uses the URL

HTTP://223.132.212.39/.

The Diva 2440 sees that the datagram is

intended for port 80 and forwards all web traffic to the appropriate

computer on the internal LAN.

Diva 2440

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Eicon Networks Diva 2440 User's Guide Page 55