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7.2

Network Address Translation (NAT)

7.2.1

Port Forwarding

Port Forwarding allows you to direct incoming traffic from the Internet side (identified by Protocol and External

port) to the internal server with a private IP address on the LAN side. The Internal port is required only if

the external port needs to be converted to a different port number used by the server on the LAN side. A

maximum of 32 entries can be configured.

To add a Virtual Server, click the Add button. The following screen will display.

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Options

Description

Select a Service

Or

Custom Server

User should select the service from the list.

Or

Create a customer server and enter a name for the server

Server IP Address

Enter the IP address for the server.

External Port Start

Enter the starting external port number (when you select Custom Server). When a service

is selected the port ranges are automatically configured.

External Port End

Enter the ending external port number (when you select Custom Server). When a service is

selected the port ranges are automatically configured.

Protocol

User can select from: TCP, TCP/UDP or UDP.

Internal Port Start

Enter the internal port starting number (when you select Custom Server). When a service is

selected the port ranges are automatically configured

Internal Port End

Enter the internal port ending number (when you select Custom Server). When a service is

selected the port ranges are automatically configured.

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7.2.2

Port Triggering

Some applications require specific ports in the Router’s firewall to be open for access by remote parties.

Port Triggering opens up the ‘Open Ports’ in the firewall when an application on the LAN initiates a TCP/UDP

connection to a remote party using the ‘Triggering Ports’. The Router allows the remote party from the WAN

side to establish new connections back to the application on the LAN side using the ‘Open Ports’. A maximum

32 entries can be configured.

To add a Trigger Port, simply click the Add button. The following will be displayed.

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Options

Description

Select an Application

or

Custom Application

User should select the application from the list.

or

User can enter the name of their choice.

Trigger Port Start

Enter the starting trigger port number (when you select custom application).

When an

application is selected, the port ranges are automatically configured.

Trigger Port End

Enter the ending trigger port number (when you select custom application).

When an

application is selected, the port ranges are automatically configured.

Trigger Protocol

TCP, TCP/UDP or UDP.

Open Port Start

Enter the starting open port number (when you select custom application).

When an

application is selected, the port ranges are automatically configured.

Open Port End

Enter the ending open port number (when you select custom application).

When an

application is selected, the port ranges are automatically configured.

Open Protocol

TCP, TCP/UDP or UDP.

7.2.3

Demilitarized (DMZ) Host

Your Router will forward IP packets from the Wireless Area Network (WAN) that do not belong to any of the

applications configured in the Virtual Servers table to the DMZ host computer.

Enter the computer’s IP address and click

Apply

to activate the DMZ host.

Clear the IP address field and click

Apply

to deactivate the DMZ host.

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7.3

Security

Your Router can be secured with

IP Filtering

or

Parental Control

functions.

7.3.1

IP Filtering

The IP Filtering screen sets filter rules that limit incoming and outgoing

IP traffic.

Multiple filter rules can be

set with at least one limiting condition.

All conditions must be fulfilled when individual IP packets pass filter.

Outgoing IP Filter

The default setting for Outgoing traffic is

ACCEPTED

.

Under this condition, all outgoing IP packets that match

the filter rules will be

BLOCKED

.

To add a filtering rule, click the

Add

button. The following screen will display.

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