Netgear DG632 Reference Guide
Reference Manual for the Model DG632 ADSL Modem Router
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Phone 1-888-NETGEAR
April 2004
© 2004 by NETGEAR, Inc. All rights reserved. April 2004.
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 DG632 ADSL Modem Router 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).
ii
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das DG632 ADSL Modem Router 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 DG632 ADSL Modem Router 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 DG632 ADSL Modem Router.
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
iv
Contents
Chapter 1
About This Manual
Audience, Conventions, Scope ......................................................................................1-1
How to Use this Manual ..................................................................................................1-2
How to Print this Manual .................................................................................................1-3
Chapter 2
Introduction
About the Modem ...........................................................................................................2-1
Key Features ..................................................................................................................2-1
Modem or Router Device Mode ...............................................................................2-2
Modem Device Mode .........................................................................................2-2
Router Device Mode .......................................................................................... 2-2
A Powerful, True Firewall .........................................................................................2-3
Auto Sensing and Auto Uplink™ LAN Ethernet Connections .................................. 2-3
Easy Installation and Management ..........................................................................2-4
What’s in the Box? ..........................................................................................................2-5
The Front Panel ....................................................................................................... 2-6
The Rear Panel ........................................................................................................2-7
Chapter 3
Connecting the Modem to the Internet
What You Need Before You Begin ..................................................................................3-1
ADSL Microfilter Requirements ................................................................................3-1
ADSL Microfilter .................................................................................................3-1
ADSL Microfilter with Built-In Splitter .................................................................3-2
Computer Hardware Requirements .........................................................................3-2
Ethernet Cabling Requirements ............................................................................... 3-2
LAN Configuration Requirements ............................................................................3-2
Internet Configuration Requirements ....................................................................... 3-3
Where Do I Get the Internet Configuration Parameters? .........................................3-3
Contents v
Record Your Internet Connection Information ..........................................................3-4
Connecting the DG632 to Your Network .........................................................................3-5
How to Connect the Modem .....................................................................................3-5
Auto-Detecting Your Internet Connection Type ........................................................3-9
Wizard-Detected PPPoE Login Account Setup ......................................................3-10
Wizard-Detected PPPoA Login Account Setup ...................................................... 3-11
Wizard-Detected Dynamic IP Account Setup ......................................................... 3-11
Testing Your Internet Connection ..................................................................................3-12
Connecting Your Computer to the DG632 USB Port Option ........................................3-12
Chapter 4
Maintaining Your
DG632 ADSL Modem Router
Changing the Mode of Operation ...................................................................................4-1
Changing the Password of Your DG632 ADSL Modem Router ...................................... 4-3
How to Change the Built-In Password .....................................................................4-4
Changing the Administrator Login Timeout .............................................................. 4-4
Backing Up, Restoring, or Erasing Your Settings ...........................................................4-5
How to Back Up the Configuration to a File ............................................................. 4-5
How to Restore the Configuration from a File ..........................................................4-6
How to Erase the Configuration ...............................................................................4-6
Upgrading the Modem’s Firmware ................................................................................. 4-6
How to Upgrade the Modem Firmware ....................................................................4-7
Chapter 5
Using Modem Mode
Modem Mode Basic Settings ..........................................................................................5-1
Manually Configuring Basic Settings ........................................................................ 5-1
Internet Connection Requires Login and Uses PPPoE ............................................5-2
Internet Connection Requires Login and Uses PPPoA ............................................5-2
Internet Connection Does Not Require A Login ....................................................... 5-3
ADSL Settings ..........................................................................................................5-4
Modem Mode Network Management Information ..........................................................5-5
Viewing Modem Status and Usage Statistics ...........................................................5-5
Chapter 6
Using Router Mode
Router Mode Basic Settings ...........................................................................................6-1
Manually Configuring Basic Settings ........................................................................ 6-2
vi Contents
Internet Connection Requires Login and Uses PPPoE ............................................6-3
Internet Connection Requires Login and Uses PPPoA ............................................6-3
Internet Connection Does Not Require A Login ....................................................... 6-4
ADSL Settings ..........................................................................................................6-5
Router Mode Network Management Information ............................................................6-6
Viewing Router Status and Usage Statistics ............................................................ 6-6
Viewing, Selecting, and Saving Router Mode Logged Information ........................ 6-11
Selecting What Information to Log ..................................................................6-12
Saving Log Files on a Server ..........................................................................6-12
Router Mode Diagnostic Utilities and Rebooting ..........................................................6-13
Firewall Services ..........................................................................................................6-14
How to Define Services ..........................................................................................6-14
Firewall Rules ...............................................................................................................6-15
Inbound Rules (Port Forwarding) ...........................................................................6-16
Inbound Rule Example: A Local Public Web Server ........................................6-17
Considerations for Inbound Rules ...................................................................6-17
Outbound Rules (Service Blocking) ....................................................................... 6-18
Outbound Rule Example: Doom ...................................................................... 6-18
Configuring Advanced Settings ....................................................................................6-19
Setting Up A Default DMZ Server .......................................................................... 6-19
How to Configure a Default DMZ Server .........................................................6-20
Connect Automatically, as Required ...................................................................... 6-20
Disable Port Scan and DOS Protection .................................................................6-21
Respond to Ping on Internet WAN Port .................................................................6-21
MTU Size ...............................................................................................................6-21
Configuring LAN IP Settings ......................................................................................... 6-21
DHCP .....................................................................................................................6-23
Use Router as DHCP server ...........................................................................6-23
Reserved IP addresses ...................................................................................6-24
How to Configure LAN TCP/IP Settings ................................................................. 6-25
Using Static Routes ...................................................................................................... 6-25
Static Route Example .............................................................................................6-25
How to Configure Static Routes .............................................................................6-26
Contents vii
Chapter 7
Troubleshooting
Basic Functioning ........................................................................................................... 7-1
Power LED Not On ................................................................................................... 7-2
LAN or WAN Port LEDs Not On ...............................................................................7-2
Troubleshooting the Web Configuration Interface ..........................................................7-2
Troubleshooting the ISP Connection ..............................................................................7-3
ADSL link .................................................................................................................7-3
WAN LED Blinking Yellow .................................................................................. 7-4
WAN LED Off .....................................................................................................7-4
Obtaining a WAN IP Address ...................................................................................7-4
Troubleshooting PPPoE or PPPoA ..........................................................................7-5
Troubleshooting Internet Browsing ..........................................................................7-6
Troubleshooting a TCP/IP Network Using the Ping Utility ..............................................7-6
Testing the LAN Path to Your Router .......................................................................7-6
Testing the Path from Your Computer to a Remote Device .....................................7-7
Restoring the Default Configuration and Password ........................................................7-8
Using the Reset button .............................................................................................7-8
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
viii Contents
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
Installing or Verifying Windows Networking Components ....................................... C-2
Enabling DHCP to Automatically Configure TCP/IP Settings in Windows 95B, 98, and Me
C-4
Selecting the Windows’ Internet Access Method .................................................... C-6
Verifying TCP/IP Properties .................................................................................... C-6
Configuring Windows NT4, 2000 or XP for IP Networking ............................................ C-7
Installing or Verifying 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
Glossary
Contents ix
x Contents
Chapter 1
About This Manual
Congratulations on your purchase of the NETGEAR® DG632 ADSL Modem Router. This chapter
introduces important features of this manual.
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 User input
mono space Screen text, file and server names, extensions, commands, IP addresses
This guide uses the following formats to highlight special messages:
Note: This format is used to highlight information of importance or special interest.
This manual is written according to these specifications.
Table 1-1. Manual Specifications
Product Version DG632 ADSL Modem Router
Manual Publication Date April 2004
Note: Product updates are available on the NETGEAR, Inc. Web site at
http://kbserver.netgear.com/products/DG632.asp.
About This Manual 1-1
Reference Manual for the Model DG632 ADSL Modem Router
How to Use this Manual
The HTML version of this manual includes a variety of navigation features as well as links to PDF
versions of the full manual and individual chapters.
1
2
3
Figure Preface -2: 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 IE or Netscape
browser with JavaScript enabled.
2. Toolbar buttons. Use the toolbar buttons across the top to navigate, print pages, and more.
The Show in Contents button locates the current topic in the Contents tab.
Previous/Next buttons display the previous or next topic.
The PDF button links to a PDF version of the full manual.
The Print button prints the current 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.
3. Right pane. Use the right pane to view the contents of the manual. Also, each page of the
manual includes a link at the top right which links to a PDF file
containing just the currently selected chapter of the manual.
1-2 About This Manual
Reference Manual for the Model DG632 ADSL Modem Router
How to Print this Manual
To print this manual you may choose one of the following 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 link at the top right of any page.
– Click the “PDF of This Chapter” link at the top right of any page in the chapter you want
to print. The PDF version of the chapter you were viewing opens in a browser window.
Note: Your computer must have the free Adobe Acrobat reader installed in order to view
and print PDF files. The Acrobat reader is available on the Adobe Web site at
http://www.adobe.com.
– 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 and 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 the PDF button on the upper right of the toolbar. The PDF version of the
chapter you were viewing opens in a browser window.
– 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 and printer ink by selecting this feature.
About This Manual 1-3
Reference Manual for the Model DG632 ADSL Modem Router
1-4 About This Manual
Chapter 2
Introduction
This chapter describes the features of the NETGEAR DG632 ADSL Modem Router. The DG632
modem router is a combination of a built-in ADSL modem, router, and firewall which enables
your network to safely share an Internet connection that otherwise is used by a single computer.
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 Modem
The DG632 ADSL Modem Router provides continuous, high-speed 10/100 Ethernet access
between your Ethernet devices. The DG632 modem router enables your network to share an
Internet connection through the built-in ADSL modem that otherwise is used by a single computer.
With minimum setup, you can install and use the modem within minutes.
The included firewall and Network Address Translation (NAT) features protect you from hackers.
Key Features
The DG632 modem router provides the following features:
• A powerful, true firewall
• Auto Sensing and Auto Uplink™ LAN Ethernet connections
• Extensive Internet protocol support
• Easy, Web-based setup for installation and management
• Direct connection to the Internet using the built-in ADSL modem
• USB connection to your computer eliminates the need for installing an Ethernet card
• Modem or Router Device Mode
Introduction 2-1
Reference Manual for the Model DG632 ADSL Modem Router
– Modem Device Mode supports configuration of your Internet connection on your
computer, and running software on your computer to log in to your ISP, if needed.
– Router Device Mode supports configuration of your Internet connection on your
DG632 modem router, and can be configured to automatically log in to your ISP, if
needed.
These features are discussed below.
Modem or Router Device Mode
The DG632 modem router can be set to operate in either Modem Device Mode or Router Device
Mode.
Modem Device Mode
When set to operate in Modem Device Mode, your computer must be configured for whatever
settings your ISP requires. Also, if your ISP uses software to establish your Internet connection,
the DHCP spoofing feature will eliminate the need to run that software.
When DHCP spoofing is enabled, the modem obtains the actual Internet WAN IP address from the
ISP during connection setup and forwards it to the attached computer.
Router Device Mode
In Router Device Mode, the DG632 supports configuration of the Transmission Control Protocol/
Internet Protocol (TCP/IP) parameters and login functions on the modem.
The DG632 supports Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing
Information Protocol (RIP). Appendix B, “Network and Routing Basics” provides further
information on TCP/IP.
• Automatic Configuration of Attached PCs by DHCP
The DG632 dynamically assigns network configuration information, including IP, modem,
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.
• DNS Proxy
When DHCP is enabled and no DNS addresses are specified, the modem provides its own
address as a DNS server to the attached PCs. The modem obtains actual DNS addresses from
the ISP during connection setup and forwards DNS requests from the LAN.
2-2 Introduction
Reference Manual for the Model DG632 ADSL Modem Router
• Classical IP (RFC 1577)
Some Internet service providers, in Europe for example, use Classical IP in their ADSL
services. In such cases, the modem is able to use the Classical IP address from the ISP.
• PPP over Ethernet (PPPoE)
PPP over 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 computer.
• PPP over ATM (PPPoA)
PPP over ATM is a protocol for connecting remote hosts to the Internet over an ADSL
connection by simulating an ATM connection.
A Powerful, True Firewall
Unlike simple Internet sharing NAT routers, the DG632 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 DG632 will log security events such as blocked incoming traffic, port scans, attacks, and
administrator logins.
Auto Sensing and Auto Uplink™ LAN Ethernet Connections
The DG632 can connect to either a 10 Mbps standard Ethernet network or a 100 Mbps Fast
Ethernet network. The local LAN port is autosensing and capable of full-duplex or half-duplex
operation.
TM
The modem incorporates Auto Uplink
sense whether the Ethernet cable plugged into the port should have a ‘normal’ connection such as
to a computer 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.
Introduction 2-3
technology. The local Ethernet port will automatically
Reference Manual for the Model DG632 ADSL Modem Router
Easy Installation and Management
You can install, configure, and operate the DG632 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 modem 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 modem automatically senses the type of Internet connection, asking you only for the
information required for your type of ISP account.
• Diagnostic functions
The modem incorporates built-in diagnostic functions such as Ping, and DNS lookup. These
functions allow you to test Internet connectivity.
• Visual monitoring
The modem’s front panel LEDs provide an easy way to monitor its status and activity.
• Flash erasable programmable read-only memory (EPROM) for firmware upgrade
2-4 Introduction
Reference Manual for the Model DG632 ADSL Modem Router
What’s In The Box?
The product package should contain the following items.
ADSL Firewall Router DG632
DG632 ADSL Firewall Router
Resource CD,installation guide,
support information card &
warranty/registration card
L
I
NE
LTER
I
SLF
D
E
ON
H
P
L
DS
PN
H
Power adapter
Category 5
100 Mbps
Ethernet cable
Micro Filter
Phone Cable
Figure 2-1: DG632 Package contents
• DG632 ADSL Modem Router
• AC power adapter (varies by region)
• Category 5 (Cat 5) Ethernet cable
• Microfilters (quantity and type vary by region)
• USB Cable (depending on the country of purchase)
• Telephone cable
• Microfilters (quantity and type vary by region)
• ADSL Modem Router Resource CD, including:
—This guide
— Application Notes
Introduction 2-5
Reference Manual for the Model DG632 ADSL Modem Router
• DG632 ADSL Modem Router Installation Guide
• A Printed Quick 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 router for repair.
The Front Panel
The DG632 ADSL Modem Router front panel shown below contains status LEDs.
Power USBInternet Ethernet
Figure 2-2: DG632 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 modem. These LEDs are green when lit.
Table 2-1. LED Descriptions
Label Activity Description
Power On
Off
Internet Blink — Amber
On — Green
Blink — Green
2-6 Introduction
Power is supplied to the modem.
Power is not supplied to the modem.
Indicates ADSL training.
The Internet port has detected a link with an attached device.
Data is being transmitted or received by the Internet port.
Table 2-1. LED Descriptions
Reference Manual for the Model DG632 ADSL Modem Router
USB On
Off
Ethernet On (Green)
Blink (Green)
On (Amber)
Blink (Amber)
Off
The Local port has detected link with a device.
No link is detected on this port.
The Local port has detected link with a 100 Mbps device.
Data is being transmitted or received at 100 Mbps.
The Local port has detected link with a 10 Mbps device.
Data is being transmitted or received at 10 Mbps.
No link is detected on this port.
The Rear Panel
The rear panel of the DG632 ADSL Modem Router (Figure 2-3) contains port connections.
Internet Ethernet
USB
Figure 2-3: DG632 Rear Panel
Power
Viewed from left to right, the rear panel contains the following elements:
• ADSL port for connecting to an ADSL line
• USB port for connecting to a local computer
• Ethernet RJ-45 port for connecting to a local computer
• Factory Default Reset push button
• AC power adapter outlet
Introduction 2-7
Reference Manual for the Model DG632 ADSL Modem Router
2-8 Introduction
Chapter 3
Connecting the Modem to the Internet
This chapter describes how to set up the modem on your Local Area Network (LAN) and connect
to the Internet. It describes how to configure your DG632 ADSL Modem Router for Internet
access using the Setup Wizard, or how to manually configure your Internet connection.
What You Need Before You Begin
You need to prepare these three things before you can establish an Internet connection through
your modem:
1. The modem connected to an ADSL line and a computer properly connected to the modem 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.
Connecting the Modem to the Internet 3-1
Reference Manual for the Model DG632 ADSL Modem Router
Note: Do not connect the DG632 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 DG632 from establishing a connection to the Internet. If you have
any doubts about this, connect the DG632 directly to the ADSL line.
ADSL Microfilter with Built-In Splitter
DSL
Phone
Figure 3-2: ADSL microfilter with built-in splitter
Line
Use an ADSL microfilter with built-in splitter when there is a single wall outlet which must
provide connectivity for both the DG632 and telephone equipment.
Computer Hardware Requirements
To use the DG632 modem router on your network, each computer must have an installed Ethernet
adapter and an Ethernet cable.
To install and run the DG632 modem router with your computer, the computer must have an
installed Ethernet Network Interface Card (NIC) and an Ethernet cable or an available USB port.
Ethernet Cabling Requirements
The DG632 modem router 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 modem.
LAN Configuration Requirements
For the initial connection to the Internet and configuration of your modem, you need to connect a
computer to the modem which is set to automatically get its TCP/IP configuration from the modem
via DHCP.
Note: Please refer to Appendix C, “Preparing Your Network” for assistance with DHCP
configuration.
3-2 Connecting the Modem to the Internet
Reference Manual for the Model DG632 ADSL Modem Router
Internet Configuration Requirements
Depending on how your ISP set up your Internet account, you need one or more of these
configuration parameters to connect your modem to the Internet:
• Virtual Path Identifier (VPI)/Virtual Channel Indentifier (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 can also refer to the ADSL Modem Router 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.
Connecting the Modem to the Internet 3-3
Reference Manual for the Model DG632 ADSL Modem Router
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 DG632
ADSL Modem Router will work fine for most ISPs. However, some ISPs use a specific
Multiplexing Method or a Virtual Circuit Number for either the Virtual Path Identifier (VPI) or
Virtual Channel Identifier (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: ________
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:
A number between 0 and 255. VCI: ___________ A number between 1 and
Login Name: ______________________________
Password: ____________________________
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: ______
.______.______.______
Modem 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: _______________________
3-4 Connecting the Modem to the Internet
Reference Manual for the Model DG632 ADSL Modem Router
Connecting the DG632 to Your Network
This section provides instructions for connecting the DG632 modem router to your network.
Note: The Resource CD included with your modem contains an animated Installation Assistant to
help you through this procedure.
How to Connect the Modem
There are three steps to connecting your firewall:
1. Connect the modem to your ADSL line.
2. Connect the modem to the computers on your network.
3. Log in to the modem.
4. Connect to the Internet.
Follow the steps below to connect your modem to your network. Before you begin, locate the
ADSL configuration information from your Internet Service Provider (ISP).
1. CONNECT THE DG632 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 modem. Select the filter that came with your modem.
One-Line Filter
Phone
Two-Line Filter
With Splitter
DSL
Phone
Line
Figure 3-3: ADSL microfilters
Note: If you purchased the DG632 in a country where the filter is not included, you must
acquire one.
Connecting the Modem to the Internet 3-5
Splitter
Reference Manual for the Model DG632 ADSL Modem Router
Two-Line Filter Example. Insert the two-line filter into the phone outlet and connect the
b.
phone to the phone line connector (A).
$3,
3KRQH
,INE
A
Phone Line
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 DG632 TO THE INTERNET.
Note: Improperly connecting a filter to your DG632 modem router will block your ADSL
connection.
a. Turn off your computer.
b. Connect the ADSL port of the DG632 to the ADSL port (B) of the two-line filter.
ADSL Port
B
'6/
0HONE
,INE
Figure 3-5: Connecting DG632 modem router to an ADSL microfilter and phone
3-6 Connecting the Modem to the Internet
Reference Manual for the Model DG632 ADSL Modem Router
Connect the Ethernet cable (C) from your DG632’s LAN port to the Ethernet adapter in
c.
your computer.
Note: To connect the computer using the USB port, please see “Connecting Your
Computer to the DG632 USB Port Option” on page 3-12.
C
$3,
0HONE
,INE
Figure 3-6: Connecting a computer to the DG632 modem router
Note: The DG632 modem router incorporates Auto UplinkTM technology. The Ethernet port
will automatically sense whether the cable plugged into the port should have a 'normal'
connection (for example, connecting to a computer) or an 'uplink' connection (for example,
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 modem and plug it in to a power outlet. Verify the
following:
The power light is lit after turning on the modem.
Connecting the Modem to the Internet 3-7
Reference Manual for the Model DG632 ADSL Modem Router
The ADSL link light is solid green, indicating a link has been established to the
ADSL 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.
or
3. LOG IN TO THE DG632.
The Ethernet or USB light is lit for the connected computer.
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 ADSL Modem Router Resource
CD.
a. Connect to the modem by typing http://192.168.0.1 in the address field of Internet
®
Explorer or Netscape
Figure 3-7: Log in to the modem
Navigator.
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
3-8 Connecting the Modem to the Internet
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