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6 Advanced configuration

Introduction

This chapters covers the more advanced features. The following topic are available:

Topic

Page

6.1 Port configuration for applications and services

44

6.1.1 UPnP

45

6.1.2 Port forwarding

47

6.1.3 Port triggering

49

6.1.4 Configure a DMZ Host

50

6.2 Assigning a reserved IP to a device

51

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6.1

Port configuration for applications and services

Introduction

The Gateway allows you to use one Internet connection for multiple computers. This means that all your computers share

one public IP address, as if only one computer were connected to the outside world.

Issue

When the Gateway receives an incoming message, the Gateway has to decide to which computer it has to send this

message.

If the incoming message is a response to an outgoing message originating from one of your computers, the Gateway sends

the incoming message to this computer.

But the Gateway will not be able to resolve the destination if:



The incoming message arrives on a different port as the outgoing message. Then the Gateway will not know that the two

messages are related.



There is no outgoing message.

Solutions

To avoid this problem, the Gateway offers the following solutions:



The Gateway supports automatic device discovery and port configuration for UPnP-enabled devices.

For more information, see

“6.1.1 UPnP” on page 45

.



The Gateway allows you to assign a port to a device.

For more information, see

“6.1.2 Port forwarding” on page 47

.



The Gateway allows you to define a number of trigger ports. When a device sends data over one of these ports, the

Gateway will automatically assign a number of related ports to the device. For more information, see

“6.1.3 Port triggering”

on page 49

.

Internet

Internet

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6.1.1 UPnP

Introduction

UPnP is designed to automate the installation and configuration of a (small) network as much as possible. This means that

UPnP-capable devices can join and leave a network without any effort of a network administrator.

Supported operating systems

The following operating systems support UPnP:



Windows 8



Windows 7



Windows Vista



Windows XP

UPnP and the Gateway

UPnP offers you the following functions:



You do not have to manually create port mappings to run services on a computer. The automatic port configuration

mechanism for UPnP-enabled games and applications will do this for you. If the application is UPnP-enabled, UPnP will

create these entries automatically.



You can access the

Admin Tool

without having to remember the address of the Gateway.

Enable UPnP on the Gateway

1

Browse to the Admin Tool.

For more information, see Admin Tool.

2

On the

Advanced

menu, click

Device Discovery

.

3

The

Device Discovery

page appears.

In the

Enable UPnP

list, select

Enabled

.

4

Click

SAVE

.

How use UPnP to access your Gateway on Windows 7/Vista

If you computer runs Windows 7/Vista:

1

On the Windows

Start

menu, click

Computer

.

2

An Explorer window appears. In the panel, click

Network

.

If your computer is running Windows XP, you first have to install the UPnP component. For more information, see

Windows help.

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3

If Explorer prompts you that network discovery and/or file sharing are turned off, click on the message and turn it on.

4

Right-click

Technicolor TC8305C

and click

View device web page

.

5

The Admin Tool appears.

How use UPnP to access your Gateway on Windows XP

If you computer runs Windows XP:

1

Go to

My Network Places

.

2

The

My Network Places

window appears:

3

Double-click

Technicolor TC8305C

.

4

The Admin Tool appears.

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6.1.2 Port forwarding

Introduction

Port forwarding allows you to forward incoming Internet traffic arriving on a specific port to an internal IP address.

For example: if you are running a web server and the Gateway receives a request on port 80, this request should be

forwarded to your web server.

Use a reserved IP address

The target device of the port forwarding rules will be specified by an IP address. Make sure that your device uses a fixed IP

address. If you do not do this, the device might get a new IP address after some time and the port forwarding rule will no

longer be applied to the device. For more information, see

6.2 Assigning a reserved IP to a device

.

Procedure

Proceed as follows to do so:

1

Browse to the Admin Tool.

For more information, see

“Accessing the Admin Tool” on page 25

.

2

On the left menu, click

Advanced

.

3

The

Port Forwarding

page appears.

In the

Enable Port Forwarding

list, click

Enabled

. In the

Port Forwarding

table, click

+ADD SERVICE

.

4

The

Add Service

page appears.

5

In the

Common Services

list, click the service you want to run on the computer or click

Other

if the service is not listed.

6

If you clicked

Other

, complete the following fields:



In the

Other Service

box, type a name for the services that you want to configure.



In the

Service Type

list, click the protocol that is used by the service.



In the

Starting Port

box, type the start port number of the port range.



In the

End port

box, type the last port number of the port range. If you only want to specify one port, use the same

number as in the

Starting Port

box.

7

In the

Service IP address

box, type the IP address of the computer to which you want to assign the service.

8

Click

ADD

.