Draytek 2950 Guía Del Usuario

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Vigor2950 Series User’s Guide 
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The UPnP (Universal Plug and Play) protocol is supported to bring to network connected 
devices the ease of installation and configuration which is already available for directly 
connected PC peripherals with the existing Windows 'Plug and Play' system. For NAT 
routers, the major feature of UPnP on the router is “NAT Traversal”. This enables 
applications inside the firewall to automatically open the ports that they need to pass through 
a router. It is more reliable than requiring a router to work out by itself which ports need to 
be opened. Further, the user does not have to manually set up port mappings or a DMZ. 
UPnP is available on Windows XP and the router provides the associated support for MSN 
Messenger to allow full use of the voice, video and messaging features. 
 
Enable UPNP Service   
Accordingly, you can enable either the Connection Control 
Service
 or Connection Status Service.  
After setting Enable UPNP Service setting, an icon of IP Broadband Connection on 
Router 
on Windows XP/Network Connections will appear. The connection status and 
control status will be able to be activated. The NAT Traversal of UPnP enables the 
multimedia features of your applications to operate. This has to manually set up port 
mappings or use other similar methods. The screenshots below show examples of this 
facility. 
 
 
 
 
The UPnP facility on the router enables UPnP aware applications such as MSN Messenger to 
discover what are behind a NAT router. The application will also learn the external IP 
address and configure port mappings on the router. Subsequently, such a facility forwards 
packets from the external ports of the router to the internal ports used by the application.