Transcript Presentation Title

Internet Gateway
Device (IGD)
Philip Poulidis
Director, Home Networking
GlobespanVirata
Agenda

Introduction

Network Address Translation (NAT)
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The Problem with NAT

The Solution

UPnP IGD Explained

Certification
Introduction

Ubiquitous broadband access creates demand
for Internet connectivity among multiple PCs
and devices inside the home.

As more nodes connect to the “network” they
each require an IP address.
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Today, IP addresses are limited so Network
Address Translation (NAT) is used.
What is NAT?

Network Address Translation (NAT) is a
widely used technique to allow multiple
systems on a Local Area Network (LAN)
to share a single, globally routable IP
address.
What’s Wrong with NAT?

Peer-to-Peer PC Applications don’t work through a Router
with NAT!
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Multi-player games
Real time communications (MSN Messenger)
Peer-to-peer services
Remote Assistance (a feature in Windows XP)
The Problem

Manual configuration of the home
gateway or router required by end-user.
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This problem results in:
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Increased tech support calls to Service Providers,
CPE device vendors and gaming vendors
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Frustrated end-users
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Ports left open resulting in security hazard
Out With the Old…

The most common method of dealing with this
problem was the programming of Application
Level Gateways (ALGs) in home routers.
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“ALG’s are application specific translation agents
that allow an application on a host in one address
realm to connect to its counterpart running on a
host in different realm transparently.” (RFC2663)
This resulted in constant updates to already
deployed routers in order to handle new
applications.
In With the New…

The Solution: UPnP IGD

The UPnP Internet Gateway Device (IGD) is an
“edge” interconnect device between a
residential Local Area Network (LAN) and the
Wide Area Network (WAN), providing
connectivity to the Internet.
Broadband
Gateway/Router
with UPnP IGD
UPnP IGD Defined

It provides:
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automatic and seamless sharing and configuration
of Internet data access among networked devices in
the residential network
richer end-user experience for UPnP enabled
devices
status and events on connections
control of initiation and termination of connections
UPnP Internet Gateway Device (IGD) has been
approved as a Standardized Device Control
Protocol (DCP)
The Magic of NAT Traversal
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UPnP IGD NAT Traversal is enabled by:
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Ability to “learn” public IP address
Enumerating existing port mappings
Adding and removing port mappings
Assigning lease times to mappings
Key Benefits of UPnP IGD NAT Traversal
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No More Application Level Gateways (ALGs)
Windows XP Supports UPnP NAT Traversal Today!
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.NET Windows Messenger / Instant Messenger
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WinXP Remote Assistance
Direct Play 8 Supports UPnP NAT Traversal Today!
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UPnP Aware Internet Games Available in Stores Now
NAT Traversal Explained
An Application on Windows XP wants to allow external traffic
from the Internet:
1. It requests the IGD to create a port mapping.
UPnP SOAP Action
AddPortMapping(X,Y)
Request Port X(Internal) &
Port Y(External) for incoming data
2. The IGD receives a SOAP action and executes internal functions.
3. IGD configures NAT to allow external traffic on the requested port.
Port X(Internal) : Y(External)
Data(X(Internal))
Data(Y(External))
NAT Traversal Benefits
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For the Customer:
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For the Internet Service Provider (ISP)
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Ease of installation and set up process
Reduced Support Calls
Reduced Termination of Service
For the Software Application Vendor:
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Networking Applications Just Work
Automatic link to user friendly GUI
No need to call "Support" (ISP, Application Vendor or IGD
Vendor)
No Application Specific ALGs
Reduced Support Calls
Reduced Software Product Returns
For the UPnP IGD Vendor:
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No Software Application Specific ALGs
Reduced Support Calls
Reduced UPnP IGD Device Returns
Certified Products
Getting Certified
First, you must be a member of both the UPnP Forum and the UIC.
The 5 steps to certifying your gateway or router:
1.
Obtain access to the test tool on the UIC web site in the
Members Only area.
2.
Run the test tool either at a third-party lab or in-house.
3.
Submit the test logs, device registration form, and $2000 device
registration fee to the Test Reviewer.
Once these steps have been taken, the following occurs:
4.
The Test Reviewer reviews the test logs and provides feedback
within 2-5 working days.
5.
If the device passed the test, you are notified and receive a
certificate
Using the UPnP Logo
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Once you certify your device, you may use the
certification mark on the certified device and
associated marketing material.
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Note: If the device incorporates UPnP firmware
that is identical to that of a previously certified
device, the device registration fee is waived.
For more information visit:
http://www.upnp.org
http://www.upnp-ic.org
For the interconnected lifestyle