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Chapter 17 Universal Plug-and-Play (UPnP)
NBG334S User’s Guide
160
When a UPnP device joins a network, it announces its presence with a multicast message. For
security reasons, the NBG334S 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.
17.2 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 the following sections for examples of installing and using UPnP.
17.3 UPnP Screen
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
LABEL DESCRIPTION
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 NBG334S'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 NBG334S so that they can communicate
through the NBG334S, 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).
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