NETGEAR DG834 - ADSL Firewall Router User manual

202-10153-04
May 2007
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Reference Manual for the
ADSL Modem Router
DG834

ii
v2.3, May 2007
© 2007 by NETGEAR, Inc. All rights reserved.
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.

v2.3, May 2007
iii
European Union Statement of Compliance
Hereby, NETGEAR, Inc. declares that this modem router is in compliance with the essential requirements and other
relevant provisions of Directive 1999/5/EC.
Èesky
[Czech] NETGEAR, Inc. tímto prohlašuje, že tento DG834 ADSL Modem Router je ve shodì se
základními požadavky a dalšími pøíslušnými ustanoveními smìrnice 1999/5/ES.
Dansk
[Danish] Undertegnede NETGEAR, Inc. erklærer herved, at følgende udstyr DG834 ADSL
Modem Router overholder de væsentlige krav og øvrige relevante krav i direktiv 1999/5/
EF.
Deutsch
[German] Hiermit erklärt NETGEAR, Inc., dass sich das Gerät DG834 ADSL Modem Router in
Übereinstimmung mit den grundlegenden Anforderungen und den übrigen einschlägigen
Bestimmungen der Richtlinie 1999/5/EG befindet.
Eesti
[Estonian] Käesolevaga kinnitab NETGEAR, Inc. seadme DG834 ADSL Modem Router vastavust
direktiivi 1999/5/EÜ põhinõuetele ja nimetatud direktiivist tulenevatele teistele
asjakohastele sätetele.
English Hereby, NETGEAR, Inc., declares that this DG834 ADSL Modem Router is in
compliance with the essential requirements and other relevant provisions of Directive
1999/5/EC.
Español
[Spanish] Por medio de la presente NETGEAR, Inc. declara que el DG834 ADSL Modem Router
cumple con los requisitos esenciales y cualesquiera otras disposiciones aplicables o
exigibles de la Directiva 1999/5/CE.
Ελληνική
[Greek] ΜΕ ΤΗΝ ΠΑΡΟΥΣΑ NETGEAR, Inc. ΔΗΛΩΝΕΙ ΟΤΙ DG834 ADSL Modem Router
ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩΔΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ
ΔΙΑΤΑΞΕΙΣ ΤΗΣ ΟΔΗΓΙΑΣ 1999/5/ΕΚ.
Français
[French] Par la présente NETGEAR, Inc. déclare que l'appareil DG834 ADSL Modem Router est
conforme aux exigences essentielles et aux autres dispositions pertinentes de la directive
1999/5/CE.
Italiano
[Italian] Con la presente NETGEAR, Inc. dichiara che questo DG834 ADSL Modem Router è
conforme ai requisiti essenziali ed alle altre disposizioni pertinenti stabilite dalla direttiva
1999/5/CE.
Latviski
[Latvian] Ar šo NETGEAR, Inc. deklarç, ka DG834 ADSL Modem Router atbilst Direktîvas 1999/
5/EK bûtiskajâm prasîbâm un citiem ar to saistîtajiem noteikumiem.
Lietuviø
[Lithuanian] Šiuo NETGEAR, Inc. deklaruoja, kad šis DG834 ADSL Modem Router atitinka esminius
reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.
Nederlands
[Dutch] Hierbij verklaart NETGEAR, Inc. dat het toestel DG834 ADSL Modem Router in
overeenstemming is met de essentiële eisen en de andere relevante bepalingen van
richtlijn 1999/5/EG.

v2.3, May 2007
iv
A printed copy of the EU Declaration of Conformity certificate for this product is provided in the DG834 v3
product package.
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das DG834 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 DG834 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.
Malti
[Maltese] Hawnhekk, NETGEAR, Inc., jiddikjara li dan DG834 ADSL Modem Router jikkonforma
mal-tiijiet essenzjali u ma provvedimenti orajn relevanti li hemm fid-Dirrettiva 1999/5/EC.
Magyar
[Hungarian] Alulírott, NETGEAR, Inc. nyilatkozom, hogy a DG834 ADSL Modem Router megfelel a
vonatkozó alapvetõ követelményeknek és az 1999/5/EC irányelv egyéb elõírásainak.
Polski
[Polish] Niniejszym NETGEAR, Inc. oœwiadcza, ¿e DG834 ADSL Modem Router jest zgodny z
zasadniczymi wymogami oraz pozosta³ymi stosownymi postanowieniami Dyrektywy
1999/5/EC.
Português
[Portuguese] NETGEAR, Inc. declara que este DG834 ADSL Modem Router está conforme com os
requisitos essenciais e outras disposições da Directiva 1999/5/CE.
Slovensko
[Slovenian] NETGEAR, Inc. izjavlja, da je ta DG834 ADSL Modem Router v skladu z bistvenimi
zahtevami in ostalimi relevantnimi doloèili direktive 1999/5/ES.
Slovensky
[Slovak] NETGEAR, Inc. týmto vyhlasuje, že DG834 ADSL Modem Router spåòa základné
požiadavky a všetky príslušné ustanovenia Smernice 1999/5/ES.
Suomi
[Finnish] NETGEAR, Inc. vakuuttaa täten että DG834 ADSL Modem Router tyyppinen laite on
direktiivin 1999/5/EY oleellisten vaatimusten ja sitä koskevien direktiivin muiden ehtojen
mukainen.
Svenska
[Swedish] Härmed intygar NETGEAR, Inc. att denna [utrustningstyp] står I överensstämmelse med
de väsentliga egenskapskrav och övriga relevanta bestämmelser som framgår av direktiv
1999/5/EG.

v2.3, May 2007
v
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.
WProduct and Publication Details
Model Number: DG834 v3
Publication Date: May 2007
Product Family: Modem Router
Product Name: DG834 ADSL Modem Router
Home or Business Product: Home
Language: English
Publication Part Number: 202-10153-04

v2.3, May 2007
vi

vii
v2.3, May 2007
Contents
Reference Manual for the ADSL Modem Router DG834 v3
Chapter 1
About This Manual
Audience, Scope, Conventions, and Formats ................................................................1-1
How to Print this Manual .................................................................................................1-2
Chapter 2
Introduction
About the Modem Router ...............................................................................................2-1
Key Features ..................................................................................................................2-2
A Powerful, True Firewall .........................................................................................2-2
Easy Installation and Management ..........................................................................2-3
Protocol Support ......................................................................................................2-3
Virtual Private Networking (VPN) .............................................................................2-5
Auto Sensing and Auto Uplink™ LAN Ethernet Connections ..................................2-5
Content Filtering .......................................................................................................2-5
What’s in the Box? ..........................................................................................................2-6
The Modem Router’s Front Panel ............................................................................2-6
The Router’s Rear Panel .........................................................................................2-8
Chapter 3
Configuring Your Internet Connection
Connecting the Router to the Internet ............................................................................3-1
Manual Setup .................................................................................................................3-2
What You Need Before You Begin ...........................................................................3-2
Understanding ADSL Microfilters .............................................................................3-2
Computers Set to DHCP ..........................................................................................3-3
Manually Setting Up Your Modem Router ......................................................................3-4
Auto-Detecting Your Internet Connection Type ............................................................3-10
Wizard-Detected PPPoE Login Account Setup ......................................................3-10

viii
v2.3, May 2007
Wizard-Detected PPPoA Login Account Setup ......................................................3-10
Wizard-Detected Dynamic IP Account Setup ......................................................... 3-11
Wizard-Detected IP Over ATM Account Setup ...................................................... 3-11
Wizard-Detected Fixed IP (Static) Account Setup ..................................................3-12
Testing Your Internet Connection ..................................................................................3-13
Manually Configuring Your Internet Connection ...........................................................3-14
How to Perform Manual Configuration ...................................................................3-15
ADSL Settings ........................................................................................................3-19
Chapter 4
Protecting Your Network
Protecting Access to Your DG834 ADSL Modem Router ...............................................4-1
How to Change the Built-In Password .....................................................................4-1
Changing the Administrator Login Timeout ..............................................................4-2
Configuring Basic Firewall Services ...............................................................................4-3
Blocking Keywords, Sites, and Services ..................................................................4-3
How to Block Keywords and Sites ...........................................................................4-3
Firewall Rules .................................................................................................................4-5
Inbound Rules (Port Forwarding) .............................................................................4-6
Outbound Rules (Service Blocking) .........................................................................4-9
Order of Precedence for Rules .............................................................................. 4-11
Services ........................................................................................................................4-12
How to Define Services ..........................................................................................4-12
Setting Times and Scheduling Firewall Services ..........................................................4-13
How to Set Your Time Zone ...................................................................................4-13
How to Schedule Firewall Services ........................................................................4-15
Chapter 5
Managing Your Network
Backing Up, Restoring, or Erasing Your Settings ...........................................................5-1
How to Back Up the Configuration to a File .............................................................5-1
How to Restore the Configuration from a File ..........................................................5-2
How to Erase the Configuration ...............................................................................5-2
Upgrading the Modem Router’s Firmware ......................................................................5-2
How to Upgrade the Modem Router Firmware ........................................................5-3
Network Management Information .................................................................................5-4
Viewing Modem Router Status and Usage Statistics ...............................................5-4

ix
v2.3, May 2007
Viewing Attached Devices ........................................................................................5-8
Viewing, Selecting, and Saving Logged Information ................................................5-8
Examples of Log Messages ................................................................................... 5-11
Enabling Security Event E-mail Notification .................................................................5-12
Running Diagnostic Utilities and Rebooting the Modem Router ...................................5-13
Enabling Remote Management ....................................................................................5-14
Configuring Remote Management .........................................................................5-15
Chapter 6
Advanced Configuration
Configuring Advanced Security ......................................................................................6-1
Setting Up A Default DMZ Server ............................................................................6-2
Connect Automatically, as Required ........................................................................6-3
Enable PPPoE-Relay ...............................................................................................6-4
Disable Port Scan and DOS Protection ...................................................................6-4
Respond to Ping on Internet WAN Port ...................................................................6-4
MTU Size .................................................................................................................6-4
Configuring LAN IP Settings ...........................................................................................6-4
DHCP .......................................................................................................................6-6
How to Configure LAN TCP/IP Settings ...................................................................6-8
Configuring Dynamic DNS .......................................................................................6-8
How to Configure Dynamic DNS ..............................................................................6-9
Using Static Routes ......................................................................................................6-10
Static Route Example .............................................................................................6-10
How to Configure Static Routes ............................................................................. 6-11
Universal Plug and Play (UPnP) ...................................................................................6-13
Chapter 7
Virtual Private Networking (Advanced Feature)
Overview of VPN Configuration ......................................................................................7-1
Client-to-Gateway VPN Tunnels ..............................................................................7-2
Gateway-to-Gateway VPN Tunnels .........................................................................7-2
Planning a VPN ..............................................................................................................7-3
VPN Tunnel Configuration ..............................................................................................7-5
How to Set Up a Client-to-Gateway VPN Configuration .................................................7-6
Step 1: Configuring the Client-to-Gateway VPN Tunnel on the DG834 v3 ..............7-6
Step 2: Configuring the NETGEAR ProSafe VPN Client on the Remote PC ......... 7-11

x
v2.3, May 2007
How to Set Up a Gateway-to-Gateway VPN Configuration ..........................................7-20
VPN Tunnel Control ......................................................................................................7-27
Activating a VPN Tunnel ........................................................................................7-27
Verifying the Status of a VPN Tunnel .....................................................................7-30
Deactivating a VPN Tunnel ....................................................................................7-32
Deleting a VPN Tunnel ...........................................................................................7-34
How to Set Up VPN Tunnels in Special Circumstances ...............................................7-36
Using Auto Policy to Configure VPN Tunnels ........................................................7-36
Using Manual Policy to Configure VPN Tunnels ....................................................7-46
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 Internet Port LEDs Not On ...........................................................................8-2
Troubleshooting the Web Configuration Interface ..........................................................8-3
Troubleshooting the ISP Connection ..............................................................................8-4
ADSL link .................................................................................................................8-4
Obtaining a WAN IP Address ...................................................................................8-5
Troubleshooting PPPoE or PPPoA ..........................................................................8-6
Troubleshooting Internet Browsing ..........................................................................8-7
Troubleshooting a TCP/IP Network Using the Ping Utility ..............................................8-7
Testing the LAN Path to Your Router .......................................................................8-7
Testing the Path from Your Computer to a Remote Device .....................................8-8
Restoring the Default Configuration and Password ........................................................8-9
Using the Reset button .............................................................................................8-9
Problems with Date and Time .......................................................................................8-10
Appendix A
Technical Specifications
Appendix B
NETGEAR VPN Configuration
DG834 v3 to FVL328 ..................................................................................................... B-1
Configuration Profile ................................................................................................ B-1
Step-By-Step Configuration ..................................................................................... B-2
DG834 v3 with FQDN to FVL328 .................................................................................. B-6

xi
v2.3, May 2007
Configuration Profile ................................................................................................ B-6
Step-By-Step Configuration ..................................................................................... B-8
Configuration Summary (Telecommuter Example) ...................................................... B-14
Setting Up the Client-to-Gateway VPN Configuration (Telecommuter Example) ........ B-15
Step 1: Configuring the Client-to-Gateway VPN Tunnel on the VPN Router at the
Employer’s Main Office ......................................................................................... B-15
Step 2: Configuring the NETGEAR ProSafe VPN Client on the Remote PC at the
Telecommuter’s Home Office ................................................................................ B-17
Monitoring the VPN Tunnel (Telecommuter Example) ................................................. B-27
Viewing the PC Client’s Connection Monitor and Log Viewer ............................... B-27
Viewing the VPN Router’s VPN Status and Log Information ................................ B-28
Appendix C
Related Documents

xii
v2.3, May 2007

About This Manual 1-1
v2.3, May 2007
Chapter 1
About This Manual
This chapter describes the intended audience, scope, conventions, and formats of this manual.
Audience, Scope, Conventions, and Formats
This reference manual assumes that the reader has basic to intermediate computer and Internet
skills. However, basic computer network, Internet, firewall, and VPN technologies tutorial
information is provided in the Appendices and on the Netgear website.
This guide uses the following typographical conventions:
This guide uses the following formats to highlight special messages:
This manual is written for the DG834 ADSL Modem Router according to these specifications:
Table 1-1. Typographical Conventions
italics Emphasis, books, CDs, URL names
bold User input
fixed Screen text, file and server names, extensions, commands, IP addresses
Note: This format is used to highlight information of importance or special interest.
Table 1-2. Manual Scope
Product Version DG834 ADSL Modem Router
Manual Publication Date May 2007
Note: Product updates are available on the NETGEAR, Inc. Web site at
http://kbserver.netgear.com.

Reference Manual for the ADSL Modem Router DG834
1-2 About This Manual
v2.3, May 2007
How to Print this Manual
To print this manual you can choose one of the following several options, according to your needs.
•Printing a Page in the HTML View.
Each page in the HTML version of the manual is dedicated to a major topic. Use the Print
button on the browser toolbar to print the page contents.
•Printing a Chapter.
Use the PDF of This Chapter link at the top left 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.
– Click the print icon in the upper left of the window.
•Printing the Full Manual.
Use the Complete PDF Manual link at the top left of any page.
– Click the Complete PDF Manual link at the top left of any page in the manual. The PDF
version of the complete manual opens in a browser window.
– Click the print icon in the upper left of the 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.
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.
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.

Introduction 2-1
v2.3, May 2007
Chapter 2
Introduction
This chapter describes the features of the NETGEAR DG834 ADSL Modem Router. The DG834
ADSL Modem Router is a combination of a built-in ADSL modem, modem router, 4-port switch,
and firewall which enables your entire network to safely share an Internet connection that
otherwise would be used by a single computer.
About the Modem Router
The DG834 ADSL Modem Router provides continuous, high-speed 10/100 Ethernet access
between your Ethernet devices. With minimum setup, you can install and use the modem router
within minutes.
The DG834 ADSL Modem Router provides multiple Web content filtering options, plus e-mail
alerts and logging. Parents and network administrators can establish restricted access policies
based on time of day, Web site addresses, and address keywords. They can also 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.
Note: If you are unfamiliar with networking and routing, refer to “Internet Networking
and TCP/IP Addressing:” in Appendix C to become more familiar with the terms
and procedures used in this manual.

Reference Manual for the ADSL Modem Router DG834
2-2 Introduction
v2.3, May 2007
Key Features
The DG834 ADSL Modem Router provides the following features:
• A built-in ADSL modem
• A powerful, true firewall
• Easy, Web-based setup for installation and management
• Extensive Internet protocol support
• Trustworthy VPN Communications over the Internet
• VPN Wizard for easy VPN configuration
• Auto Sensing and Auto Uplink™ LAN Ethernet connections
• Content filtering
These features are discussed below.
A Powerful, True Firewall
Unlike simple Internet sharing NAT routers, the DG834 v3 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 DG834 v3 will log security events such as blocked incoming traffic, port scans, attacks,
and administrator logins. You can configure the modem router to email the log to you at
specified intervals. You can also configure the modem router to send immediate alert messages
to your email address or email pager whenever a significant event occurs.

Reference Manual for the ADSL Modem Router DG834
Introduction 2-3
v2.3, May 2007
Easy Installation and Management
You can install, configure, and operate the DG834 v3 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 router 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
A wizard built into the modem router automatically senses the type of Internet connection,
asking you only for the information required for your type of ISP account.
• Remote management
The modem router allows you to log in 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, or you can choose a nonstandard port number.
• Diagnostic functions
The modem router incorporates built-in diagnostic functions such as Ping, DNS lookup, and
remote reboot. These functions allow you to test Internet connectivity and reboot the modem
router. You can use these diagnostic functions directly from the DG834 v3 when you are
connected on the LAN or when you are connected over the Internet via the remote
management function.
• Visual monitoring
The modem router’s front panel LEDs provide an easy way to monitor its status and activity.
• Flash erasable programmable read-only memory (EPROM) for firmware upgrades.
Protocol Support
The DG834 v3 supports Transmission Control Protocol/Internet Protocol (TCP/IP) and Routing
Information Protocol (RIP). “Internet Networking and TCP/IP Addressing:” in Appendix C
provides further information on TCP/IP.
• The Ability to Enable or Disable IP Address Sharing by NAT
The DG834 v3 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. This feature can also be turned off completely while
using the DG834 v3 if you want to manage the IP address scheme yourself.

Reference Manual for the ADSL Modem Router DG834
2-4 Introduction
v2.3, May 2007
• Automatic Configuration of Attached PCs by DHCP
The DG834 v3 dynamically assigns network configuration information, including IP, modem
router, 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 router provides its
own address as a DNS server to the attached PCs. The modem router 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 modem router 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.
• Point-to-Point Tunneling Protocol (PPTP)
Typically used as a protocol for virtual private networks. This protocol is used by some
Russian ISPs for connecting remote hosts to the Internet over an ADSL 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 modem router 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 between networking
technologies. 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.
Note: PPTP must be manually configured. At present, the SmartWizard cannot
automatically detect a PPTP type of connecton with your ISP.

Reference Manual for the ADSL Modem Router DG834
Introduction 2-5
v2.3, May 2007
Virtual Private Networking (VPN)
The DG834 ADSL Modem Router provides a secure encrypted connection between your local
area network (LAN) and remote networks or clients. It includes the following VPN features:
• Supports 5 VPN connections.
• Supports industry standard VPN protocols
The DG834 ADSL Modem Router supports standard Manual or IKE keying methods,
standard MD5 and SHA-1 authentication methods, and standard DES and 3DES encryption
methods. It is compatible with many other VPN products.
• Supports 3DES encryption for maximum security.
• VPN Wizard based on VPNC recommended settings.
Auto Sensing and Auto Uplink™ LAN Ethernet Connections
With its internal 4-port 10/100 switch, the DG834 v3 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 modem router 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 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.
Content Filtering
With its content filtering feature, the DG834 v3 prevents objectionable content from reaching your
PCs. The modem router allows you to control access to Internet content by screening for keywords
within Web addresses. You can configure the modem router to log and report attempts to access
objectionable Internet sites.

Reference Manual for the ADSL Modem Router DG834
2-6 Introduction
v2.3, May 2007
What’s in the Box?
The product package should contain the following items:
• DG834 ADSL Modem Router
• AC power adapter (varies by region)
• Category 5 (Cat 5) Ethernet cable
• Telephone cable with RJ-11 connector
• Microfilters (quantity and type vary by region)
•ADSL Modem Router Resource CD, including this guide
• A Printed Quick Installation Guide
• Warranty and Support Information Cards
• Two plastic feet that can be used to stand the DG834 ADSL Modem Router on end.
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.
The Modem Router’s Front Panel
The DG834 ADSL Modem Router front panel shown below contains status LEDs.
You can use the LEDs to verify various conditions. Table 2-1 lists and describes each LED on the
front panel of the modem router. These LEDs are green when lit.
Figure 2-1
1234