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8.4 The UPnP Screen
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.
See
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Use the following screen to configure the UPnP settings on your VMG. Click Network Setting > Home
Networking > UPnP to display the screen shown next.
Figure 54 Network Setting > Home Networking > UPnP
The following table describes the labels in this screen.
Table 30 Network Setting > Home Networking > UPnP
LABEL
UPnP
UPnP NAT-T
#
Description
Destination IP
Address
External Port
Internal Port
Protocol
Chapter 8 Home Networking
for more information on UPnP.
DESCRIPTION
Select Enable to activate UPnP. Be aware that anyone could use a UPnP application to open
the web configurator's login screen without entering the VMG's IP address (although you must
still enter the password to access the web configurator).
Select Enable to allow UPnP-enabled applications to automatically configure the VMG so that
they can communicate through the VMG 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.
The table below displays the NAT port forwarding rules added automatically by UPnP NAT-T.
This is the index number of the UPnP NAT-T connection.
This is the description of the UPnP NAT-T connection.
This is the IP address of the other connected UPnP-enabled device.
This is the external port number that identifies the service.
This is the internal port number that identifies the service.
This is the transport layer protocol used for the service.
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