User`s manual

802.11n WLAN ADSL2+ Router

UPnP

UPnP is an architecture for pervasive peer-to-peer network connectivity of intel-

ligent appliances, Wireless devices, and PCs of all form factors. It is designed to

bring easy-to-use, exible, standards-based connectivity to ad-hoc or unmanaged

networks whether in the home, in a small business, public spaces, or attached to the

Internet. UPnP is a distributed, open networking architecture that leverages TCP/IP

and the Web technologies to enable seamless proximity networking in addition to

control and data transfer among networked devices in the home, ofce, and public

spaces.

UPnP is more than just a simple extension of the plug and play peripheral model.

It is designed to support zero-conguration, “invisible” networking, and automatic dis-

covery for a breadth of device categories from a wide range of vendors. This means

a device can dynamically join a network, obtain an IP address, convey its capabili-

ties, and learn about the presence and capabilities of other devices. DHCP and DNS

servers are optional and are used only if available on the network. Finally, a device

can leave a network smoothly and automatically without leaving any unwanted state

behind.

The DSL device supports a control point for Universal Plug and Play (UPnP) ver-

sion 1.0, and supports two key features: NAT Traversal and DeviceIdentication.

This feature requires one active WAN interface. In addition, the host should support

this feature. In the presence of multiple WAN interfaces, select an interface on which

the incoming trafc is present.

With NAT Traversal, when an UPnP command is received to open ports in NAT,

the application translates the request into system commands to open the ports in

NAT and the rewall. The interface to open the ports on is given to UPnP when it

starts up and is part of the conguration of the application.

For Device Identication, the application will send a description of the DSL device

as a control point back to the host making the request.

From the web page you can enable or disable UPnP.

Conguring UPnP

From the left-hand • Services menu, click on UPnP. The following page is dis-

played: