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Chapter 3 Configuration
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3.4.1.5 UPnP Portmap
Universal Plug and Play (UPnP) is architecture for pervasive peer-to-peer network connectivity of
PCs and intelligent devices or appliances, particularly within the home. UPnP builds on Internet
standards and technologies, such as TCP/IP, HTTP, and XML, to enable these devices to
automatically connect with one another and work together to make networking - particularly home
networking - possible for more people.
The UPnP aware applications will discover that they are behind a NAT router, learn the external
IP address and configure port mappings on the router to forward packets from the external ports
of the router to the internal ports used by the application.