ZyXEL nbg-334w Guia Do Utilizador

Chapter 17 Universal Plug-and-Play (UPnP)

NBG334W User’s Guide

When a UPnP device joins a network, it announces its presence with a multicast message. For 
security reasons, the NBG334W 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. 

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 the following sections for examples of installing and using UPnP.

Click the Management > UPnP to display the UPnP screen.

Figure 87   Management > UPnP > General 

The following table describes the labels in this screen. 

Table 68   Management > UPnP > General

Enable the Universal Plug 

and Play (UPnP) Feature

Select this check box to activate UPnP. Be aware that anyone could 

use a UPnP application to open the web configurator's login screen 

without entering the NBG334W's IP address (although you must still 

enter the password to access the web configurator).

Allow users to make 

configuration changes 

through UPnP

Select this check box to allow UPnP-enabled applications to 

automatically configure the NBG334W so that they can communicate 

through the NBG334W, for example 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. 

Allow UPnP to pass through 

Firewall

Select this check box to allow traffic from UPnP-enabled applications to 

bypass the firewall. 
Clear this check box to have the firewall block all UPnP application 

packets (for example, MSN packets).