ZyXEL P-2812HNU-51c User Manual Page 340

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Chapter 22 Universal Plug-and-Play (UPnP)
P-2812HNU-51c User’s Guide
340
Windows Messenger is an example of an application that supports NAT traversal
and UPnP.
See the NAT chapter 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.
When a UPnP device joins a network, it announces its presence with a multicast
message. For security reasons, the P-2812HNU-51c 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 the following sections for examples of installing and using UPnP.
22.3 The UPnP Screen
Click Advanced > UPnP to display the screen shown next.
See Section 22.1 on page 339 for more information.
Figure 173 Advanced > UPnP
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