Zyxel P8701T Router Manual PDF (Setup & Configuration Guide)

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Chapter 10 DNS Setup

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146

Figure 58

Dynamic DNS

The following table describes the fields in this screen.

10.3.1

The Dynamic DNS Add Screen

Use this screen to create a DDNS entry. Click the

Dynamic DNS

screen’s

Add

button to display the

following screen.

Figure 59

Dynamic DNS Add

The following table describes the fields in this screen.

Table 52

Dynamic DNS

LABEL

DESCRIPTION

Hostname

This displays the entry’s domain name.

Username

This displays the entry’s user name.

Service

This displays the entry’s Dynamic DNS service provider.

Interface

This displays the interface the DDNS entry uses.

Remove

Select entries and click the

Remove

button to delete them.

Add

Click this to create a new DDNS entry.

Table 53

Dynamic DNS Add

LABEL

DESCRIPTION

D-DNS provider

Select your Dynamic DNS service provider from the drop-down list box.

Hostname

Type the domain name assigned to your VDSL Router by your Dynamic DNS provider.

You can specify up to two host names in the field separated by a comma (",").

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Interface

Select the interface the DDNS entry uses.

Username

Type your user name.

Password

Type the password assigned to you.

Apply/Save

Click this button to save your changes.

Table 53

Dynamic DNS Add (continued)

LABEL

DESCRIPTION

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C

HAPTER

11

UPnP

11.1

Overview

Universal Plug and Play (UPnP) is a distributed, open networking standard that uses TCP/IP for

simple peer-to-peer network connectivity between devices. A UPnP device can dynamically join a

network, obtain an IP address, convey its capabilities and learn about other devices on the network.

In turn, a device can leave a network smoothly and automatically when it is no longer in use.

11.1.1

What You Can Do in this Chapter

Use the

UPnP

screen to enable UPnP on the VDSL Router (

Section 11.2 on page 150

).

11.1.2

What You Need To Know

Identifying UPnP Devices

UPnP hardware is identified as an icon in the Network Connections folder (Windows XP). Each UPnP

compatible device installed on your network will appear as a separate icon. Selecting the icon of a

UPnP device will allow you to access the information and properties of that device.

NAT Traversal

UPnP NAT traversal automates the process of allowing an application to operate through NAT. UPnP

network devices can automatically configure network addressing, announce their presence in the

network to other UPnP devices and enable exchange of simple product and service descriptions.

NAT traversal allows the following:

•

Dynamic port mapping

•

Learning public IP addresses

•

Assigning lease times to mappings

Windows Messenger is an example of an application that supports NAT traversal and UPnP.

See the

Chapter 6 on page 113

for more information on NAT.

Cautions with UPnP

The automated nature of NAT traversal applications in establishing their own services and opening

firewall ports may present network security issues. Network information and configuration may also

be obtained and modified by users in some network environments.

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When a UPnP device joins a network, it announces its presence with a multicast message. For

security reasons, the VDSL Router allows multicast messages on the LAN only.

All UPnP-enabled devices may communicate freely with each other without additional configuration.

Disable UPnP if this is not your intention.

UPnP and ZyXEL

ZyXEL has achieved UPnP certification from the Universal Plug and Play Forum UPnP™

Implementers Corp. (UIC). ZyXEL's UPnP implementation supports Internet Gateway Device (IGD)

1.0.

See

Section 11.3 on page 150

for examples of installing and using UPnP.

11.2

The UPnP Screen

Use the following screen to enable or disable UPnP on your VDSL Router. Click

Wireless network

> Classic configuration > Advanced Setup > UPnP

to display the screen shown next.

Figure 60

Network Setting > Home Networking > UPnP

The following table describes the labels in this screen.

11.3

Installing UPnP in Windows XP Example

This section shows how to install UPnP in Windows Windows XP.

1

Click

Start

and

Control Panel

.

Table 54

Network Setting > Home Networking > UPnP

LABEL

DESCRIPTION

Enable UPnP

Select this to allow UPnP-enabled applications to automatically configure the VDSL Router

so that they can communicate through the VDSL Router by using NAT traversal. UPnP

applications automatically reserve a NAT forwarding port in order to communicate with

another UPnP enabled device; this eliminates the need to manually configure port

forwarding for the UPnP enabled application.

Be aware that anyone could use a UPnP application to open the web configurator's login

screen without entering the VDSL Router's IP address (although you must still enter the

password to access the web configurator).

Apply/Save

Click this to save your changes.

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