ZyXEL Communications P-870HW-51a v2 User Manual

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P-870HW-51a v2 User’s Guide
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Universal Plug-and-Play (UPnP)
14.1  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.
14.1.1  What You Can Do in this Chapter
The UPnP screen lets you enable UPnP on the ZyXEL Device (
).
14.2  What You Need to Know
How do I know if I'm using UPnP? 
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