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Chapter 16 Universal Plug-and-Play (UPnP)
When a UPnP device joins a network, it announces its presence with a multicast message. For
security reasons, the ZyXEL Device 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.
16.2 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.
16.2.1 Configuring UPnP
Use this screen to set up UPnP in the ZyXEL Device. Click Advanced > UPnP to display the
screen shown next.
See
Section 16.1 on page 205
Figure 108 UPnP > General
The following table describes the fields in this screen.
Table 80 UPnP > General
LABEL
Active the Universal Plug
and Play (UPnP) Feature
Allow users to make
configuration changes
through UPnP
Allow UPnP to pass through
Firewall
206
for more information.
DESCRIPTION
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 ZyXEL Device's IP address (although you must still
enter the password to access the web configurator).
Select this check box to allow UPnP-enabled applications to
automatically configure the ZyXEL Device so that they can
communicate through the ZyXEL Device, 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.
Select this to allow UPnP-enabled applications to automatically pass
through the ZyXEL Device's firewall. This is less secure, but you do not
have to configure firewall rules for these applications.
P-793H User's Guide
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Troubleshooting
