NETWORK ADDRESS TRANSLATION (PORT MAPPING) FOR FIRMWARE VERSION 4.7.2

This section describes the steps needed to open "ports" on the router to make them available on the Internet. This only applies if you're using Network Address Translation (NAT).

Port mapping is the method in which a service running behind a router using a non-routable private IP address can become public on the internet. For example, if you are running your own mail server and it is using a non-routable private IP address, you open port 25 on the router and point it to the private IP address of the mail server. This then allows the mail server to become visible on the internet, thereby allowing you to receive internet mail.

The screenshots below apply to all Netopia models.

To enter data in the fields, you either type directly into the field and press the ENTER key or you hit the ENTER key in the field and use the TAB key to choose from a selection.

From the Main Menu highlight "System Configuration..." and hit the ENTER key.

Highlight "Network Protocols Setup..." and hit the ENTER key.

Highlight "IP Setup..." and hit the ENTER key.

Highlight "Network Address Translation (NAT)..." and hit the ENTER key.

Highlight "Show/Change Server List..." and hit the ENTER key.

Highlight "Easy-Servers..." and hit the ENTER key.

Highlight "Add Server..." and hit the ENTER key.

Highlight "Service..." and hit the ENTER key.

This will then bring up a list of common ports predefined from a picklist. You have the option of creating a custom port by selecting "Other...".

Select the port you want to open and hit the ENTER key. For this example, we are going to use smtp port 25.

Highlight "smtp 25" and hit the ENTER key.

In the "Server Private Address:" field, enter the IP address of the machine hosting the port you just opened. For this example, we are using 192.168.1.2.

Highlight "ADD NAT SERVER" and hit the ENTER key to open the port.

You will follow the same procedure for other ports you want to open.