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348 Chapter 18 UPnP
N0115790
Windows Messenger is an example of an application that supports NAT traversal
and UPnP.
Cautions with UPnP
The automated nature of NAT traversal applications in establishing their own
services and opening firewall ports can present network security issues. Network
information and configuration can also be obtained and modified by users in some
network environments.
All UPnP-enabled devices can communicate freely with each other without
additional configuration. If this is not your intention, disable UPnP.
UPnP implementation
The device has UPnP certification from the Universal Plug and Play Forum
Creates UPnP™ Implementers Corp. (UIC). This UPnP implementation supports
IGD 1.0 (Internet Gateway Device). At the time of writing, the UPnP
implementation supports Windows Messenger 4.6 and 4.7 while Windows
Messenger 5.0 and Xbox are still being tested.
The BCM50a Integrated Router only sends UPnP multicasts to the LAN.
Configuring UPnP
Click UPnP to display the screen shown in Figure 131.