Netgear DG824M Reference Guide

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

NETGEAR, Inc.

4500 Great America Parkway

Santa Clara, CA 95054 USA

Phone 1-888-NETGEAR

SM-DG824MNA-1

July 2003

Trademarks

NETGEAR is a trademark of Netgear, Inc.

Microsoft, Windows, and Windows NT are registered trademarks of Microsoft Corporation.

Other brand and product names are registered trademarks or trademarks of their respective holders.

Statement of Conditions

In the interest of improving internal design, operational function, and/or reliability, NETGEAR reserves the right to make changes to the products described in this document without notice.

NETGEAR does not assume any liability that may occur due to the use or application of the product(s) or circuit layout(s) described herein.

Federal Communications Commission (FCC) Compliance Notice: Radio Frequency Notice

This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to

part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:

•Reorient or relocate the receiving antenna.

•Increase the separation between the equipment and receiver.

•Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

•Consult the dealer or an experienced radio/TV technician for help.

Federal Communications Commission (FCC) Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. In order to avoid the possibility of exceeding the FCC radio frequency exposure limits, human proximity to the antenna shall not be less than 20 cm (8 inches) during normal operation.

EN 55 022 Declaration of Conformance

This is to certify that the DG824M Wireless ADSL Modem Gateway is shielded against the generation of radio interference in accordance with the application of Council Directive 89/336/EEC, Article 4a. Conformity is declared by the application of EN 55 022 Class B (CISPR 22).

Bestätigung des Herstellers/Importeurs

Es wird hiermit bestätigt, daß das DG824M Wireless ADSL Modem Gateway gemäß der im BMPT-AmtsblVfg 243/ 1991 und Vfg 46/1992 aufgeführten Bestimmungen entstört ist. Das vorschriftsmäßige Betreiben einiger Geräte (z.B. Testsender) kann jedoch gewissen Beschränkungen unterliegen. Lesen Sie dazu bitte die Anmerkungen in der Betriebsanleitung.

Das Bundesamt für Zulassungen in der Telekommunikation wurde davon unterrichtet, daß dieses Gerät auf den Markt gebracht wurde und es ist berechtigt, die Serie auf die Erfüllung der Vorschriften hin zu überprüfen.

Certificate of the Manufacturer/Importer

It is hereby certified that the DG824M Wireless ADSL Modem Gateway has been suppressed in accordance with the conditions set out in the BMPT-AmtsblVfg 243/1991 and Vfg 46/1992. The operation of some equipment (for example, test transmitters) in accordance with the regulations may, however, be subject to certain restrictions. Please refer to the notes in the operating instructions.

Federal Office for Telecommunications Approvals has been notified of the placing of this equipment on the market and has been granted the right to test the series for compliance with the regulations.

Voluntary Control Council for Interference (VCCI) Statement

This equipment is in the second category (information equipment to be used in a residential area or an adjacent area thereto) and conforms to the standards set by the Voluntary Control Council for Interference by Data Processing Equipment and Electronic Office Machines aimed at preventing radio interference in such residential areas.

When used near a radio or TV receiver, it may become the cause of radio interference. Read instructions for correct handling.

Customer Support

Refer to the Support Information Card that shipped with your DG824M Wireless ADSL Modem Gateway.

World Wide Web

NETGEAR maintains a World Wide Web home page that you can access at the universal resource locator (URL) http://www.netgear.com. A direct connection to the Internet and a Web browser such as Internet Explorer

or Netscape are required.

iii

Chapter 1

About This Guide

Audience .........................................................................................................................	1-1
Scope .............................................................................................................................	1-1
Typographical Conventions ............................................................................................	1-2
Special Message Formats ..............................................................................................	1-2
How to Use the HTML Version of this Manual ................................................................	1-3
How to Print this Manual .................................................................................................	1-4
Chapter 2
Introduction
About the Gateway .........................................................................................................	2-1
Key Features ..................................................................................................................	2-1
802.11b Standards-based Wireless Networking ......................................................	2-2
A Powerful, True Firewall .........................................................................................	2-2
Content Filtering .......................................................................................................	2-3
Auto Sensing and Auto Uplink™ LAN Ethernet Connections ..................................	2-3
Protocol Support ......................................................................................................	2-3
Easy Installation and Management ..........................................................................	2-4
What’s in the Box? ..........................................................................................................	2-5
The Gateway’s Front Panel ......................................................................................	2-6
The Gateway’s Rear Panel ......................................................................................	2-7
Chapter 3
Connecting the Gateway to the Internet
What You Will Need Before You Begin ...........................................................................	3-1
ADSL Microfilter Requirements ................................................................................	3-1
ADSL Microfilter .................................................................................................	3-1
ADSL Microfilter with Built-In Splitter .................................................................	3-2
Ethernet Cabling Requirements ...............................................................................	3-2
Computer Hardware Requirements .........................................................................	3-2
Contents	v

LAN Configuration Requirements ............................................................................	3-2
Internet Configuration Requirements .......................................................................	3-3
Where Do I Get the Internet Configuration Parameters? .........................................	3-3
Record Your Internet Connection Information ..........................................................	3-4
Connecting the DG824M to Your LAN ............................................................................	3-5
How to Connect the Gateway ..................................................................................	3-5
Connecting the DG824M to the Internet .........................................................................	3-9
Auto-Detecting Your Internet Connection Type ........................................................	3-9
Wizard-Detected PPPoE Login Account Setup ......................................................	3-10
Wizard-Detected PPPoA Login Account Setup ......................................................	3-12
Wizard-Detected Dynamic IP Account Setup .........................................................	3-14
Wizard-Detected IP Over ATM Account Setup ......................................................	3-15
Wizard-Detected Fixed IP (Static) Account Setup ..................................................	3-16
Testing Your Internet Connection ..................................................................................	3-17
Manually Configuring Your Internet Connection ...........................................................	3-18
Manual Configuration .............................................................................................	3-19
Chapter 4
Wireless Configuration
Considerations for a Wireless Network ..........................................................................	4-1
Observe Performance, Placement, and Range Guidelines .....................................	4-1
Implement Appropriate Wireless Security ................................................................	4-2
Understanding Wireless Settings ...................................................................................	4-3
How to Set Up and Test Basic Wireless Connectivity ..............................................	4-4
Restricting Wireless Access to Your Network ..........................................................	4-5
Restricting Access to Your Network by Turning Off Wireless Connectivity ........	4-6
Restricting Wireless Access Based on the Wireless Network Name (SSID) .....	4-6
Restricting Wireless Access Based on the Trusted PCs List .............................	4-6
Choosing WEP Authentication and Security Encryption Methods ...........................	4-8
Authentication Type Selection ...........................................................................	4-8
Encryption Choices ............................................................................................	4-9
How to Configure WEP ............................................................................................	4-9
Chapter 5
Protecting Your Network
Protecting Access to Your DG824M Wireless ADSL Modem Gateway ..........................	5-1
How to Change the Built-In Password .....................................................................	5-1
vi	Contents

Changing the Administrator Login Timeout ..............................................................	5-2
Configuring Basic Firewall Services ...............................................................................	5-2
Blocking Keywords, Sites, and Services ..................................................................	5-3
How to Block Keywords and Sites ...........................................................................	5-3
Rules ..............................................................................................................................	5-5
Inbound Rules (Port Forwarding) .............................................................................	5-7
Inbound Rule Example: A Local Public Web Server ..........................................	5-7
Inbound Rule Example: Allowing Videoconferencing ........................................	5-9
Considerations for Inbound Rules .....................................................................	5-9
Outbound Rules (Service Blocking) .......................................................................	5-10
Outbound Rule Example: Blocking Instant Messenger ...................................	5-10
Order of Precedence for Rules ..............................................................................	5-12
Services ........................................................................................................................	5-13
How to Define Services ..........................................................................................	5-13
Setting Times and Scheduling Firewall Services ..........................................................	5-14
How to Set Your Time Zone ...................................................................................	5-14
How to Schedule Firewall Services ........................................................................	5-16
Chapter 6
Managing Your Network
Backing Up, Restoring, or Erasing Your Settings ...........................................................	6-1
How to Back Up the Configuration to a File .............................................................	6-1
How to Restore a Configuration from a File .............................................................	6-2
How to Erase the Configuration ...............................................................................	6-2
Upgrading the Gateway’s Firmware ...............................................................................	6-2
How to Upgrade the Gateway Firmware ..................................................................	6-3
Network Management Information .................................................................................	6-4
Viewing Gateway Status and Usage Statistics .........................................................	6-4
Viewing Attached Devices ........................................................................................	6-8
Viewing, Selecting, and Saving Logged Information ................................................	6-8
Selecting What Information to Log ..................................................................	6-10
Saving Log Files on a Server ..........................................................................	6-11
Examples of log messages ....................................................................................	6-11
Activation and Administration ..........................................................................	6-11
Dropped Packets .............................................................................................	6-11
Enabling Security Event E-mail Notification .................................................................	6-12
Contents	vii

Running Diagnostic Utilities and Rebooting the Router ................................................	6-13
Enabling Remote Management ....................................................................................	6-14
Configure Remote Management ............................................................................	6-14
Chapter 7
Advanced Configuration
Configuring Advanced Security ......................................................................................	7-1
Setting Up A Default DMZ Server ............................................................................	7-1
How to Configure a Default DMZ Server. .................................................................	7-2
Respond to Ping on Internet WAN Port ...................................................................	7-2
Configuring LAN IP Settings ...........................................................................................	7-2
DHCP .......................................................................................................................	7-5
Use Gateway as DHCP server ..........................................................................	7-5
Reserved IP addresses .....................................................................................	7-6
How to Configure LAN TCP/IP Settings ...................................................................	7-6
Configuring Dynamic DNS .......................................................................................	7-7
How to Configure Dynamic DNS ..............................................................................	7-8
Using Static Routes ........................................................................................................	7-9
Static Route Example ...............................................................................................	7-9
How to Configure Static Routes .............................................................................	7-10
Chapter 8
Troubleshooting
Basic Functioning ...........................................................................................................	8-1
Power LED Not On ...................................................................................................	8-2
Test LED Never Turns On or Test LED Stays On .....................................................	8-2
LAN or WAN Port LEDs Not On ...............................................................................	8-2
Troubleshooting the Web Configuration Interface ..........................................................	8-3
Troubleshooting the ISP Connection ..............................................................................	8-4
ADSL link .................................................................................................................	8-4
WAN LED Blinking Yellow ..................................................................................	8-4
WAN LED Off .....................................................................................................	8-4
Obtaining a WAN IP Address ...................................................................................	8-5
Troubleshooting PPPoE or PPPoA ..........................................................................	8-6
Troubleshooting Internet Browsing ..........................................................................	8-6
Troubleshooting a TCP/IP Network Using the Ping Utility ..............................................	8-7
Testing the LAN Path to Your Router .......................................................................	8-7
viii	Contents

Testing the Path from Your PC to a Remote Device ................................................	8-8
Restoring the Default Configuration and Password ........................................................	8-8
Using the Default Reset button ................................................................................	8-9
Problems with Date and Time .........................................................................................	8-9
Appendix A
Technical Specifications
Appendix B
Network and Routing Basics
Related Publications ......................................................................................................	B-1
Basic Router Concepts ..................................................................................................	B-1
What is a Router? ...................................................................................................	B-2
Routing Information Protocol ...................................................................................	B-2
IP Addresses and the Internet .................................................................................	B-2
Netmask ..................................................................................................................	B-4
Subnet Addressing ..................................................................................................	B-5
Private IP Addresses ...............................................................................................	B-7
Single IP Address Operation Using NAT .................................................................	B-8
MAC Addresses and Address Resolution Protocol .................................................	B-9
Related Documents .................................................................................................	B-9
Domain Name Server ............................................................................................	B-10
IP Configuration by DHCP ....................................................................................	B-10
Internet Security and Firewalls ....................................................................................	B-10
What is a Firewall? .................................................................................................	B-11
Stateful Packet Inspection ......................................................................................	B-11
Denial of Service Attack .........................................................................................	B-11
Ethernet Cabling ...........................................................................................................	B-11
Category 5 Cable Quality ......................................................................................	B-12
Inside Twisted Pair Cables ....................................................................................	B-13
Uplink Switches, Crossover Cables, and MDI/MDIX Switching ............................	B-14
Appendix C
Preparing Your Network
Preparing Your Computers for TCP/IP Networking .......................................................	C-1
Configuring Windows 95, 98, and Me for TCP/IP Networking .......................................	C-2
Install or Verify Windows Networking Components .................................................	C-2
Enabling DHCP to Automatically Configure TCP/IP Settings in Windows 95B, 98, and Me
C-4
Contents	ix

Selecting Windows’ Internet Access Method ..........................................................	C-6
Verifying TCP/IP Properties ....................................................................................	C-6
Configuring Windows NT4, 2000 or XP for IP Networking ............................................	C-7
Install or Verify Windows Networking Components .................................................	C-7
DHCP Configuration of TCP/IP in Windows XP, 2000, or NT4 ...............................	C-8
DHCP Configuration of TCP/IP in Windows XP .....................................................	C-8
DHCP Configuration of TCP/IP in Windows 2000 ................................................	C-10
DHCP Configuration of TCP/IP in Windows NT4 ..................................................	C-13
Verifying TCP/IP Properties for Windows XP, 2000, and NT4 ..............................	C-15
Configuring the Macintosh for TCP/IP Networking ......................................................	C-16
MacOS 8.6 or 9.x ..................................................................................................	C-16
MacOS X ...............................................................................................................	C-16
Verifying TCP/IP Properties for Macintosh Computers .........................................	C-17
Verifying the Readiness of Your Internet Account .......................................................	C-18
Are Login Protocols Used? ...................................................................................	C-18
What Is Your Configuration Information? ..............................................................	C-18
Obtaining ISP Configuration Information for Windows Computers .......................	C-19
Obtaining ISP Configuration Information for Macintosh Computers .....................	C-20
Restarting the Network ................................................................................................	C-21
Appendix D
Wireless Networking Basics
Wireless Networking Overview ......................................................................................	D-1
Infrastructure Mode .................................................................................................	D-1
Ad Hoc Mode (Peer-to-Peer Workgroup) ................................................................	D-2
Network Name: Extended Service Set Identification (ESSID) ................................	D-2
Authentication and WEP ................................................................................................	D-3
802.11b Authentication ............................................................................................	D-3
Open System Authentication ...................................................................................	D-4
Shared Key Authentication ......................................................................................	D-4
Overview of WEP Parameters ................................................................................	D-5
Key Size ..................................................................................................................	D-6
WEP Configuration Options ....................................................................................	D-7
Wireless Channels .........................................................................................................	D-7
Glossary
Index
x	Contents

Chapter 1

About This Guide

Thank you for purchasing the NETGEAR™ DG824M Wireless ADSL Modem Gateway.

Audience, Conventions, Scope

This reference manual assumes that the reader has basic-to-intermediate computer and Internet skills. However, basic computer network, Internet, firewall, and networking technology tutorial information is provided in the Appendices.

This guide uses the following typographical conventions:

Table 1. Typographical conventions

italics	Emphasis, books, CDs, URL names

bold times roman	User input

courier font	Screen text, file and server names, extensions, commands, IP addresses

Note: This format is used to highlight information of importance or special interest.

This manual is written for the DG824M wireless gateway according to these specifications.:

Table 1-1. Manual Specifications

Product Version	DG824M Wireless ADSL Modem Gateway

Manual Publication Date	July 2003

Note: Product updates are available on the NETGEAR, Inc. web site at http:// www.netgear.com/support/main.asp. Documentation updates are available on the NETGEAR, Inc. web site at http://www.netgear.com/docs.

About This Guide

Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

How to Use this Manual

The HTML version of this manual includes these features.

1 2

Figure 1 -1: HTML version of this manual

1.Left pane. Use the left pane to view the Contents, Index, Search, and Favorites tabs.

To view the HTML version of the manual, you must have a version 4 or later browser with Java or JavaScript enabled. To use the Favorites feature, your browser must be set to accept cookies. You can record a list of favorite pages in the manual for easy later retrieval.

2.Toolbar buttons. Use the toolbar buttons across the top to navigate, print pages, and more.

–The Show in Contents button locates the currently displayed topic in the Contents tab.

–Previous/Next buttons display the topic that precedes or follows the current topic.

–The PDF button links to a PDF version of the full manual.

–The E-mail button enables you to send feedback by e-mail to Netgear support.

–The Print button prints the currently displayed topic. Using this button when a step-by-step procedure is displayed will send the entire procedure to your printer--you do not have to worry about specifying the correct range of pages.

–The Bookmark button bookmarks the currently displayed page in your browser.

3.Right pane. Use the right pane to view the contents of the manual. Also, each page of the manual includes a “PDF of This Chapter” link at the top right which links to a PDF file containing just the currently selected chapter of the manual.

2	About This Guide

Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

How to Print this Manual

To print this manual you man choose one of the following several options, according to your needs.

•Printing a “How To” Sequence of Steps in the HTML View. Use the Print button on the upper right of the toolbar to print the currently displayed topic. Using this button when a step-by-step procedure is displayed will send the entire procedure to your printer--you do not have to worry about specifying the correct range of pages.

•Printing a Chapter. Use the “PDF of This Chapter” link at the top right of any page.

–Click “PDF of This Chapter” link at the top right of any page in the chapter you want to print. A new browser window opens showing the PDF version of the chapter you were viewing.

–Click the print icon in the upper left of the window.

–Tip: If your printer supports printing two pages on a single sheet of paper, you can save paper an printer ink by selecting this feature.

•Printing the Full Manual. Use the PDF button in the toolbar at the top right of the browser window.

–Click PDF button. A new browser window opens showing the PDF version of the chapter you were viewing.

–Click the print icon in the upper left of the window.

–Tip: If your printer supports printing two pages on a single sheet of paper, you can save paper an printer ink by selecting this feature.

About This Guide

Chapter 2

Introduction

This chapter describes the features of the NETGEAR DG824M Wireless ADSL Modem Gateway. The DG824M wireless gateway is a combination of a built-in ADSL modem, router, 4-port switch, and firewall which enables your entire network to safely share an Internet connection that otherwise is used by a single PC.

Note: If you are unfamiliar with networking and routing, refer to Appendix B, “Network and Routing Basics,” to become more familiar with the terms and procedures used in this manual.

About the Gateway

The DG824M Wireless ADSL Modem Gateway provides continuous, high-speed 11 Mbps access between your wireless and Ethernet devices. The DG824M wireless gateway enables your entire network to share an Internet connection through the built-in ADSL modem that otherwise is used by a single PC. With minimum setup, you can install and use the gateway within minutes.

The DG824M wireless gateway provides multiple Web content filtering options, plus e-mail browsing activity reporting and instant alerts. Parents and network administrators can establish restricted access policies based on time-of-day, website addresses and address keywords, and share high-speed ADSL Internet access for up to 253 personal computers. The included firewall and Network Address Translation (NAT) features protect you from hackers.

Key Features

The DG824M wireless gateway provides the following features:

•A Powerful, True Firewall

•802.11b Standards-based wireless networking

•Content Filtering

Introduction

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

•Auto Sensing and Auto Uplink™ LAN Ethernet Connections

•Extensive Internet Protocol Support

•Easy, web-based setup for installation and management

•A built-in ADSL modem

These features are discussed below.

802.11b Standards-based Wireless Networking

The DG824M wireless gateway includes an 802.11b-compliant wireless access point, providing continuous, high-speed 11 Mbps access between your wireless and Ethernet devices. The access point provides:

•802.11b Standards-based wireless networking at up to 11 Mbps

•64-bit and 128-bit WEP encryption security

•WEP keys can be generated manually or by passphrase

•Wireless access can be restricted by MAC address.

A Powerful, True Firewall

Unlike simple Internet sharing NAT routers, the DG824M is a true firewall, using stateful packet inspection to defend against hacker attacks. Its firewall features include:

•Denial of Service (DoS) protection

Automatically detects and thwarts Denial of Service (DoS) attacks such as Ping of Death, SYN Flood, LAND Attack and IP Spoofing.

•Blocks unwanted traffic from the Internet to your LAN.

•Blocks access from your LAN to Internet locations or services that you specify as off-limits.

•Logs security incidents

The DG824M will log security events such as blocked incoming traffic, port scans, attacks, and administrator logins. You can configure the gateway to email the log to you at specified intervals. You can also configure the gateway to send immediate alert messages to your email address or email pager whenever a significant event occurs.

2-2	Introduction

Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

Content Filtering

With its content filtering feature, the DG824M prevents objectionable content from reaching your PCs. The gateway allows you to control access to Internet content by screening for keywords within Web addresses. You can configure the gateway to log and report attempts to access objectionable Internet sites.

Auto Sensing and Auto Uplink™ LAN Ethernet Connections

With its internal 4-port 10/100 switch, the DG824M can connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast Ethernet network. The local LAN ports are autosensing and capable of full-duplex or half-duplex operation.

The gateway incorporates Auto UplinkTM technology. Each LOCAL Ethernet port will automatically sense whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as to a PC or an ‘uplink’ connection such as to a switch or hub. That port will then configure itself to the correct configuration. This feature also eliminates the need to worry about crossover cables, as Auto Uplink will accommodate either type of cable to make the right connection.

Protocol Support

The DG824M supports the Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing Information Protocol (RIP). Appendix B, “Network and Routing Basics” provides further information on TCP/IP.

•IP Address Sharing by NAT

The DG824M allows several networked PCs to share an Internet account using only a single IP address, which may be statically or dynamically assigned by your Internet service provider (ISP). This technique, known as Network Address Translation (NAT), allows the use of an inexpensive single-user ISP account.

•Automatic Configuration of Attached PCs by DHCP

The DG824M dynamically assigns network configuration information, including IP, gateway, and domain name server (DNS) addresses, to attached PCs on the LAN using the Dynamic Host Configuration Protocol (DHCP). This feature greatly simplifies configuration of PCs on your local network.

Introduction

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

•DNS Proxy

When DHCP is enabled and no DNS addresses are specified, the gateway provides its own address as a DNS server to the attached PCs. The gateway obtains actual DNS addresses from the ISP during connection setup and forwards DNS requests from the LAN.

•Classical IP (RFC 1577)

Some Internet service providers, in Europe for example, use Classical IP in their ADSL services. In such cases, the gateway is able to use the Classical IP address from the ISP.

•PPP over Ethernet (PPPoE)

PPPover Ethernet is a protocol for connecting remote hosts to the Internet over an ADSL connection by simulating a dial-up connection. This feature eliminates the need to run a login program such as EnterNet or WinPOET on your PC.

•PPP over ATM (PPPoA)

PPPover ATM is a protocol for connecting remote hosts to the Internet over an ADSL connection by simulating a ATM connection.

•Dynamic DNS

Dynamic DNS services allow remote users to find your network using a domain name when your IP address is not permanently assigned. The gateway contains a client that can connect to many popular Dynamic DNS services to register your dynamic IP address.

•Universal Plug and Play (UPnP)

UPnP is a networking architecture that provides compatibility among networking technology. UPnP compliant routers provide broadband users at home and small businesses with a seamless way to participate in online games, videoconferencing and other peer-to-peer services.

Easy Installation and Management

You can install, configure, and operate the DG824M within minutes after connecting it to the network. The following features simplify installation and management tasks:

•Browser-based management

Browser-based configuration allows you to easily configure your gateway from almost any type of personal computer, such as Windows, Macintosh, or Linux. A user-friendly Setup Wizard is provided and online help documentation is built into the browser-based Web Management Interface.

•Smart Wizard

The gateway automatically senses the type of Internet connection, asking you only for the information required for your type of ISP account.

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

•Remote management

The gateway allows you to login to the Web Management Interface from a remote location via the Internet. For security, you can limit remote management access to a specified remote IP address or range of addresses, and you can choose a nonstandard port number.

•Diagnostic functions

The gateway incorporates built-in diagnostic functions such as Ping, DNS lookup, and remote reboot. These functions allow you to test Internet connectivity and reboot the gateway. You can use these diagnostic functions directly from the DG824M when your are connect on the LAN or when you are connected over the Internet via the remote management function.

•Visual monitoring

The gateway’s front panel LEDs provide an easy way to monitor its status and activity.

•Flash EPROM for firmware upgrade

What’s in the Box?

The product package should contain the following items:

•DG824M Wireless ADSL Modem Gateway

•AC power adapter (varies by region)

•Category 5 (Cat 5) Ethernet cable

•Telephone cable

•Microfilters (quantity and type vary by region)

•Model DG824M Resource CD, including:

—This guide

—Application Notes

•A Quick Printed Installation Guide

•Warranty and Support Information Cards

If any of the parts are incorrect, missing, or damaged, contact your NETGEAR dealer. Keep the carton, including the original packing materials, in case you need to return the product for repair.

Introduction

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

The Gateway’s Front Panel

The DG824M Wireless ADSL Modem Gateway front panel shown below contains status LEDs.

Figure 2-1: DG824M Front Panel

You can use the LEDs to verify various conditions. Table 2-1 lists and describes each LED on the front panel of the router. These LEDs are green when lit.

Table 2-1.	LED Descriptions

Label	Activity	Description

Power	On	Power is supplied to the router.
	Off	Power is not supplied to the router.

Test	On	The system is initializing.
	Off	The system is ready and running.

Internet	Blink -- Amber	Indicates ADSL training.
	On -- Green	The Internet port has detected a link with an attached device.
	Blink -- Green	Data is being transmitted or received by the Internet port.
Wireless	On	Indicates that the Wireless port is initialized.
	Off	The Wireless Access Point is turned off.

LAN	On (Green)	The Local port has detected link with a 100 Mbps device.
	Blink (Green)	Data is being transmitted or received at 100 Mbps.
	On (Amber)	The Local port has detected link with a 10 Mbps device.
	Blink (Amber)	Data is being transmitted or received at 10 Mbps.
	Off	No link is detected on this port.

2-6	Introduction

Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

The Gateway’s Rear Panel

The rear panel of the DG824M Wireless ADSL Modem Gateway (Figure 2-2) contains port connections.

Figure 2-2: DG824M Rear Panel

Viewed from left to right, the rear panel contains the following elements:

•AC power adapter outlet

•Wireless antenna

•Factory Default Reset push button

•Four Local Ethernet RJ-45 ports for connecting the gateway to the local computers

•ADSL port for connecting the gateway to an ADSL line

Introduction

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2-8	Introduction

Chapter 3 Connecting the Gateway to the Internet

This chapter describes how to set up the gateway on your Local Area Network (LAN), connect to the Internet, how to configure your DG824M Wireless ADSL Modem Gateway for Internet access using the Setup Wizard, or how to manually configure your Internet connection.

What You Will Need Before You Begin

You need to prepare these three things before you can establish an Internet connection through your gateway:

1.The gateway connected to an ADSL line and a computer properly connected to the gateway as explained below.

2.Active Internet service such as that provided by an ADSL account.

3.The Internet Service Provider (ISP) configuration information for your DSL account.

ADSL Microfilter Requirements

ADSL technology uses the same wires as your telephone service. However, ADSL adds signals to the telephone lines which create noise in the telephone service. You must use ADSL microfilters to filter out these signals before they reach your telephone.

ADSL Microfilter

Phone

Figure 3-1: ADSL microfilter

Each device such as a telephone, fax machine, answering machine, or caller ID display will require an ADSL microfilter.

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Reference Manual for the Model DG824M Wireless ADSL Modem Gateway

Note: Do not connect the DG824M to the ADSL line through a microfilter unless the microfilter is a combination microfilter/splitter specifically designed for this purpose. Doing so will prevent the built-in ADSL modem in the DG824M from establishing a connection to the Internet. If you have any doubts about this, connect the DG824M directly to the ADSL line.

ADSL Microfilter with Built-In Splitter

DSL

Phone

Line

Figure 3-2: ADSL microfilter with built-in splitter

Use an ADSL microfilter with built-in splitter when there is a single wall outlet must provide connectivity for both the DG824M and telephone equipment.

Ethernet Cabling Requirements

The DG824M wireless gateway connects to your Ethernet LAN via twisted-pair cables. If the computer will connect to your network at 100 Mbps, you must use a Category 5 (CAT5) cable such as the one provided with your gateway.

Computer Hardware Requirements

To use the DG824M wireless gateway on your network, each computer must have an installed Ethernet adapter and an Ethernet cable, or a 802.11b wireless adapter.

LAN Configuration Requirements

For the initial connection to the Internet and configuration of your gateway, you will need to connect a computer to the gateway which is set to automatically get its TCP/IP configuration from the gateway via DHCP.

Note: Please refer to Appendix C, “Preparing Your Network for assistance with DHCP configuration.

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Internet Configuration Requirements

Depending on how your ISP set up your Internet account, you will need one or more of these configuration parameters to connect your gateway to the Internet:

•VPI/VCI parameters

•Multiplexing Method

•Host and Domain Names

•ISP Login Name and Password

•ISP Domain Name Server (DNS) Addresses

•Fixed or Static IP Address

Where Do I Get the Internet Configuration Parameters?

There are several ways you can gather the required Internet connection information.

•Your ISP should have provided you with all the information needed to connect to the Internet. If you cannot locate this information, you can ask your ISP to provide it or you can try one of the options below.

•If you have a computer already connected using the active Internet access account, you can gather the configuration information from that computer.

•For Windows 95/98/ME, open the Network control panel, select the TCP/IP entry for the Ethernet adapter, and click Properties.

•For Windows 2000/XP, open the Local Area Network Connection, select the TCP/IP entry for the Ethernet adapter, and click Properties.

•For Macintosh computers, open the TCP/IP or Network control panel.

•You may also refer to the DG824M Resource CD for the NETGEAR Router ISP Guide which provides Internet connection information for many ISPs.

Once you locate your Internet configuration parameters, you may want to record them on the page below according to the instructions in “Record Your Internet Connection Information” on page 3-4.

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Record Your Internet Connection Information

Print this page. Fill in the configuration parameters from your Internet Service Provider (ISP).

ISP Multiplexing Method and Virtual Circuit Number: The default settings of your DG824M Wireless ADSL Modem Gateway will work fine for most ISPs. However, some ISPs use a specific Multiplexing Method or a Virtual Circuit Number for either the VPI or VCI. If your ISP provided you with a specific Multiplexing Method or VPI/VCI number, then fill in the following:

Multiplexing Method, circle one: LLC-based or VC-based

VPI: ________ A number between 0 and 255. VCI: ___________ A number between 1and 65535.

ISP Login Name: The login name and password are case sensitive and must be entered exactly as given by your ISP. Some ISPs use your full e-mail address as the login name. The Service Name is not required by all ISPs. If you use a login name and password, then fill in the following:

Service Name: _____________________________

Fixed or Static IP Address: If you have a static IP address, record the following information. For example, 169.254.141.148 could be a valid IP address.

Fixed or Static Internet IP Address: ______ . ______ . ______ . ______

Gateway IP Address: ______ . ______ . ______ . ______

Subnet Mask: ______ . ______ . ______ . ______

ISP DNS Server Addresses: If you were given DNS server addresses, fill in the following: Primary DNS Server IP Address: ______ . ______ . ______ . ______

Secondary DNS Server IP Address: ______ . ______ . ______ . ______

Host and Domain Names: Some ISPs use a specific host or domain name like CCA7324-A or home. If you did not get host or domain names, use the following examples as a guide:

•If your main e-mail account with your ISP is aaa@yyy.com, then use aaa as your host name. Your ISP might call this your account, user, host, computer, or system name.

•If your ISP’s mail server is mail.xxx.yyy.com, then use xxx.yyy.com as the domain name.

ISP Host Name: _________________________ ISP Domain Name: _______________________

For Wireless Access: For configuration of the wireless network, record the following: Wireless Network Name (SSID): __________________

WEP Authentication (circle one): Automatic, Open System, or Shared Key

WEP Encryption (circle one): 64 or 128; Passphrase or Key: ____________________

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Connecting the DG824M to Your LAN

This section provides instructions for connecting the DG824M wireless gateway.

Note: The Resource CD included with your gateway contains an animated Installation Assistant to help you through this procedure.

How to Connect the Gateway

There are three steps to connecting your firewall:

1.Connect the gateway to your ADSL line

2.Connect the gateway to the computers on your network

3.Log in to the gateway

4.Connect to the Internet

Follow the steps below to connect your gateway to your network. You can also refer to the Resource CD included with your gateway which contains an animated Installation Assistant to help you through this procedure.

Before you begin, locate the ADSL configuration information from your Internet Service Provider (ISP).

1.CONNECT THE DG824M TO THE ADSL LINE.

a.You need to install a filter on every telephone or device that shares the same phone number as your ADSL gateway. Select the filter that came with your gateway.

One-Line Filter	Splitter
	Phone

Two-Line Filter

With Splitter

DSL

Phone

Line

Figure 3-3: ADSL microfilters

Note: If you purchased the DG824M in a country where the filter is not included, you must acquire one.

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b.Two-Line Filter Example. Insert the two-line filter into the phone outlet and connect the phone to the phone line connector (A).

Line

DSL

Phone

Figure 3-4: Connecting an ADSL microfilter and phone

Note: To use a one-line filter with a separate splitter, insert the splitter into the phone outlet, connect the one-line filter to the splitter, and connect the phone to the filter.

2. CONNECT THE DG824M TO THE INTERNET.

Note: Improperly connecting a filter to your DG824M wireless gateway will block your ADSL connection.

a.Turn off your computer

b. Connect the ADSL				to the ADSL port (B) of the two-line filter.

Line

DSL

Phone

Wireless ADSL Modem Gateway DG824M

Figure 3-5: Connecting	gateway to an ADSL microfilter and phone

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c.Connect the Ethernet your computer.

Line
DSL	Phone
C

Wireless ADSL Modem Gateway DG824M

Figure 3-6: Connecting a

your DG824M’s LAN port to the Ethernet adapter in

DG824M wireless gateway

Note: The DG824M wireless gateway incorporates Auto UplinkTM technology. Each Ethernet LAN port will automatically sense whether the cable plugged into the port should have a 'normal' connection (e.g. connecting to a PC) or an 'uplink' connection (e.g. connecting to a switch or hub). That port will then configure itself to the correct configuration. This feature also eliminates the need to worry about crossover cables, as Auto Uplink will accommodate either type of cable to make the right connection.

d.Connect the power adapter to the gateway and plug it in to a power outlet. Verify the following:

The power light is lit after turning on the gateway.

The ADSL link light is solid green, indicating a link has been established to the cable network.

e.Now, turn on your computer. If software usually logs you in to your Internet connection, do not run that software or cancel it if it starts automatically.

The local lights are lit for any connected computers.

Note: For instructions on connecting computers to the DG824M via wireless links, please see the Chapter 4, “Wireless Configuration”.

3.LOG IN TO THE DG824M.

Note: Your computer needs to be configured for DHCP. For instructions on configuring for DHCP, please see Appendix C in the Reference Manual on the Model DG824M Resource CD.

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a.Connect to the gateway by typing http://192.168.0.1 in the address field of Internet Explorer or Netscape® Navigator.

Figure 3-7: Log in to the gateway

A login window opens as shown below:

Figure 3-8: Login window

b.When prompted, enter admin for the user name and password for the password, both in lower case letters. After logging in, you will see the menu below.

Figure 3-9: Setup Wizard

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4.CONNECT TO THE INTERNET

a.If you do not see the menu above, click the Setup Wizard link on the upper left of the main menu. Click the Yes button in the Setup Wizard, and click the Next button to let the Setup Wizard automatically detect what type of Internet connection your ISP has provided.

b.Select your country and the multiplexing method will update with the preset defaults. The multiplexing method preset default settings will usually work. Only change the multiplexing method if you are sure your ISP requires VPI or VCI settings that are different from the default values. Incorrect VPI or VCI settings will prevent you from connecting to the Internet.

Note: You must select a country before clicking Next to proceed with the Setup Wizard.

c.Click the Next button to let the Setup Wizard detect the type of connection you have from your ISP. Follow the steps in the subsequent screens of the Setup Wizard to input the Internet configuration parameters from your ISP.

Note: If you were unable to connect to the gateway, please refer to Chapter 8, “Troubleshooting”. Also, improperly connecting a filter between the gateway and your phone line will block your ADSL connection.

Connecting the DG824M to the Internet

The gateway is now properly attached to your network. You are now ready to configure your gateway to connect to the Internet. There are two ways you can configure your gateway to connect to the Internet:

•Let the DG824M auto-detect the type of Internet connection you have and configure it.

•Manually choose which type of Internet connection you have and configure it.

These options are described below. In either case, unless your ISP automatically assigns your configuration automatically via DHCP, you will need the configuration parameters from your ISP you recorded in “Record Your Internet Connection Information” on page 3-4.

Auto-Detecting Your Internet Connection Type

The Web Configuration Manager built in to the gateway contains a Setup Wizard that can automatically determine your network connection type.

1.If your gateway has not yet been configured, the Setup Wizard shown in Figure 3-9 should launch automatically.

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