Real time communications (MSN Messenger) Peer-to-pee

1
Internet Gateway Device (IGD)
Philip Poulidis Director, Home Networking Globespa
nVirata
2
Agenda

• Introduction
• Network Address Translation (NAT)
• The Problem with NAT
• The Solution
• UPnP IGD Explained
• Certification

3
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.
• Today, IP addresses are limited so Network
  Address Translation (NAT) is used.

4
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.

192.168.0.2
External IP Address xxx.xxx.xxx.xxx
192.168.0.3
192.168.0.4
5
Whats Wrong with NAT?

• Peer-to-Peer PC Applications dont work through a
  Router with NAT!
• Multi-player games
• Real time communications (MSN Messenger)
• Peer-to-peer services
• Remote Assistance (a feature in Windows XP)

192.168.0.2
External IP Address xxx.xxx.xxx.xxx
192.168.0.3
192.168.0.4
6
The Problem

• Manual configuration of the home gateway or
  router required by end-user.
• This problem results in
• Increased tech support calls to Service
  Providers, CPE device vendors and gaming vendors
• Frustrated end-users
• Ports left open resulting in security hazard

7
Out With the Old

• The most common method of dealing with this
  problem was the programming of Application Level
  Gateways (ALGs) in home routers.
• ALGs 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.

8
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
9
UPnP IGD Defined

• It provides
• 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)

10
The Magic of NAT Traversal

• UPnP IGD NAT Traversal is enabled by
• 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
• No More Application Level Gateways (ALGs)
• Windows XP Supports UPnP NAT Traversal Today!
• .NET Windows Messenger / Instant Messenger
• WinXP Remote Assistance
• Direct Play 8 Supports UPnP NAT Traversal Today!
• UPnP Aware Internet Games Available in Stores Now

11
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.
2. The IGD receives a SOAP action and executes
internal functions. 3. IGD configures NAT to
allow external traffic on the requested port.
12
NAT Traversal Benefits

• For the Customer
• Networking Applications Just Work
• Automatic link to user friendly GUI
• No need to call "Support" (ISP, Application
  Vendor or IGD Vendor)
• For the Internet Service Provider (ISP)
• Ease of installation and set up process
• Reduced Support Calls
• Reduced Termination of Service
• For the Software Application Vendor
• No Application Specific ALGs
• Reduced Support Calls
• Reduced Software Product Returns
• For the UPnP IGD Vendor
• No Software Application Specific ALGs
• Reduced Support Calls
• Reduced UPnP IGD Device Returns

13
Certified Products
14
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
  
• Obtain access to the test tool on the UIC web
  site in the Members Only area.
• Run the test tool either at a third-party lab or
  in-house.
• 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
• The Test Reviewer reviews the test logs and
  provides feedback within 2-5 working days.
• If the device passed the test, you are notified
  and receive a certificate

15
Using the UPnP Logo

• Once you certify your device, you may use the
  certification mark on the certified device and
  associated marketing material.
• Note If the device incorporates UPnP firmware
  that is identical to that of a previously
  certified device, the device registration fee is
  waived.

16

• For more information visit
• http//www.upnp.org
• http//www.upnp-ic.org

17
For the interconnected lifestyle