Router User’s Guide

Configuring Network Settings

Port Forwarding

Port forwarding allows selected servers running on the LAN side of the router to be accessed from the

WAN side. Requests from the WAN to a configured TCP or UDP port will be forwarded to the selected IP

address on the LAN. NAPT functionality ensures that the LAN-side server is known to the WAN only

through the public IP address. The server’s actual private IP address remains unknown to any WAN-side

hosts.

To configure port forwarding:

1. Select

Setup>Port Forwarding

from the left navigation pane of the Web interface. This displays the

“Port Forwarding Configuration” window.

2. Under

Add/Edit Entry

, do one of the following:

•

Select the service you want to configure from the

Select service by name

drop-down menu.

•

Select the protocol you want to configure from the

Select protocol

drop down menu. This can be

TCP, UDP, ICMP, or GRE. If you select TCP or UDP you must also specify either a single port or

range of ports that apply.

3.

Select one of the following:

•

Redirect selected protocol/service to this router

Select this option if you want inbound traffic forwarded to the SpeedStream.

•

Redirect selected protocol/service to IP address

Select this option if you want inbound traffic forwarded to a host located on the LAN. In this case,

you must specify the IP address of the host on which the server resides.

4. Click

Apply

.

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Router User’s Guide

Configuring Network Settings

UPnP (Universal Plug and Play)

Microsoft UPnP allows the Router to communicate directly with certain Windows operating systems to

trade information about the special needs of certain applications (such as messaging programs and

interactive games) as well as provide information about other devices on the network, where applicable.

This communication between the operating system and Router greatly reduces the amount of manual

configuration required to use new applications and devices.

Only certain versions of Windows XP and computer support the UPnP (Universal Plug and Play) function.

Before configuring this option, you must ensure that the UPnP component is installed on your computer

and enabled.

To enable UPnP functionality:

1. Select

Setup>UPnP

from the left navigation pane of the Web interface. This displays the “UPnP

Configuration” window.

2.

Select one of the following control options.

•

Disable UPnP

Prevents the Router from using the UPnP feature to communicate with other devices or your

operating system. Also may be disabled if your operating system does not support UPnP.

•

Enable Discovery and Advertisement only (SSDP)

Sends information about new devices (hardware) detected only. No information concerning

software applications or services is transmitted.

•

Enable full Internet Gateway Device (IGD) support

Allows the Router to communicate freely with computers on the network about new devices,

software applications, and services as needed to ensure they are working with minimal manual

configuration required.

3.

Select one of the following options:

•

Enable access logging

Generates a system log message whenever an UPnP client accesses the router.

•

Read-only mode

Restricts the kind of access an UPnP client can have into the router. Only requests in the UPnP

protocol that query the status of the router are allowed. Any requests that could potentially modify

the router’s behavior are blocked.

4. Click

Apply

to accept the settings. This displays the “UPnP Finish” window.

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Router User’s Guide

Configuring Network Settings

Bridge Mode

The Router supports two fundamental modes of operation with respect to connectivity between the Local

Area Network (LAN) and the Wide Area Network (WAN): bridge/routing mode and bridge mode.

The default mode of operation is bridge/routing mode. With bridge/routing mode, the Router provides

typical routing functionality between the WAN side and the LAN side. However, all LAN-side interfaces

are "bridged."

The second mode of operation provides only "bridging" functionality. This applies to both WAN-to-LAN

connectivity as well as to all LAN-side interfaces. Point-to-Point (PPP) connections are not available

under the bridge mode of operation.

Important!

If you switch to Bridge mode, you will lose access to the Web management interface and can

only return to Router mode by resetting the Router to factory defaults.

To change to bridge mode:

1. Select

Setup>Bridge Mode

from the left navigation pane of the Web interface. This displays the

“Change to Bridge Mode” window.

2. Click

Apply

.

35

Router User’s Guide

Configuring Network Settings

Server Ports

Common applications such as HTTP (Web site traffic), FTP, and Telnet use pre-defined incoming port

numbers for compatibility with other services. If you wish to change the ports used by these applications

you may do so using this option. This feature is recommended for use by advanced users only.

To configure the server port option:

1. Select

Setup>Server Ports

from the left navigation pane of the Web interface. This displays the

“SpeedStream Gateway Server Ports” window.

2.

Optionally, type a port number in the

HTTP

box. The default port for this field is 80.

3.

Optionally, type a port number in the

FTP

box. The default port for this field is 21.

4.

Optionally, type a port number in the

Telnet

box. The default port for this field is 23.

5. Click

Apply

. This displays the “Your settings have been saved” window.

6. Optionally, click

Reboot

if you wish for the settings to immediately be implemented. The system

responds by restarting your Router.

36

Router User’s Guide

Configuring Network Settings

Dynamic DNS

Use the dynamic DNS advanced option to set up Dynamic DNS. Dynamic DNS translates IP addresses

into alphanumeric names. For example, an IP address of 333.136.249.80 could be translated into

siemens.com. To use the DDNS service, you must register for the service. You can register from the

following web page:

www.dydns.org/services/dydns

.

Once registered, you must set up your DNS data on the Router. Once this is done, users can connect to

your servers (or DMZ computer) from the Internet using your Domain name. Refer to the section in this

document titled

DMZ

for more information on DMZs.

To set up Dynamic DNS on the Router:

1. Select

Setup>Dynamic DNS

from the left navigation pane of the Web interface. This displays the

“Set Up Dynamic DNS” window.

2. Select the

Enable

option under

Dynamic DNS Client

.

3.

Type the name provided to you by

www.dydns.org

in the

Service Username

box.

4. Type your

www.dydns.org

password in the

Password

box.

5.

Type the domain or host name provided by

www.dydns.org

in the

Host Name 1

box.

6.

Optionally, if you have more than one domain or host name, type it in the

Host Name 2

box.

7. Click

Apply

. The system responds by registering your domain or host name to

www.dydns.org

.

37