ADSL2+ Combo Modem Router
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11.0 Universal Plug-and-Play (UPnP)
11.1 Universal Plug and Play 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. An 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.
11.2 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.
11.3 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
Windows Messenger is an example of an application that supports NAT traversal and UPnP.
See the
Network Address Translation (NAT)
chapter for further information about NAT.
11.4 Cautions with UPnP
The automated nature of NAT traversal applications in establishing their own services may present
network security issues. Network information and configuration may also be obtained and modified
by users in some network environments.
All UPnP-enabled devices may communicate freely with each other without additional configuration.
Disable UPnP if this is not your intention.
UPnP broadcasts are only allowed on the LAN.
See later sections for examples of installing UPnP in Windows XP and Windows Me as well as an
example of using UPnP in Windows.
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Страница 36: ...ADSL2 Combo Modem Router 36 14 Please click Next to continue 15 Please click Install to continue ...
Страница 69: ...ADSL2 Combo Modem Router 69 15 Please enter admin as User name 1234 as password then click OK ...