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9 NETWORK SERVICES
DMS-CTC-20110713-0016 v2.0
9.2 Assigning a service (HTTP, FTP,...) to a Computer
Introduction
The MediaAccess Gateway allows you to use one Internet connection for multiple computers. This means that all your
computers share one public IP address, as if only one computer were connected to the outside world.
Issue
When the MediaAccess Gateway receives an incoming message, the MediaAccess Gateway has to decide to which
computer it has to send this message.
If the incoming message is a response to an outgoing message originating from one of your computers, the MediaAccess
Gateway sends the incoming message to this computer.
If your are running a server or an application that acts as a server (for example a HTTP server, Internet game), the initial
message will come from the Internet and the MediaAccess Gateway has no information to decide to which computer it
should forward the incoming message.
Solution
To avoid this problem you can do either of the following:
Enable UPnP.
Assign a game or application to a local networking device.
UPnP
UPnP is a technology that enables seamless operation of a wide range of games and messaging applications. Your computer
will use UPnP to communicate to the MediaAccess Gateway which services are running on the computer.
For example, when you start a UPnP-enabled application on your computer, it will automatically create the necessary port
mappings on this computer and on the MediaAccess Gateway.
For more information on UPnP, see “9.1 UPnP” on page 84.
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