NETGEAR DG834Gv3 - 54 Mbps Wireless ADSL Firewall... User manual

202-10155-01
January 2006
NETGEAR, Inc.
4500 Great America Parkway
Santa Clara, CA 95054 USA
Reference Manual for the
ADSL Modem Wireless
Router DG834G

ii
v1.0, January 2006
© 2006 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.

v1.0, January 2006
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 54 Mbps ADSL Modem Wireless Router
Model DG834G je ve shodì se základními požadavky a dalšími pøíslušnými
ustanoveními smìrnice 1999/5/ES.
Dansk
[Danish] Undertegnede NETGEAR, Inc. erklærer herved, at følgende udstyr 54 Mbps ADSL
Modem Wireless Router Model DG834G overholder de væsentlige krav og øvrige
relevante krav i direktiv 1999/5/EF.
Deutsch
[German] Hiermit erklärt NETGEAR, Inc., dass sich das Gerät 54 Mbps ADSL Modem Wireless
Router Model DG834G in Übereinstimmung mit den grundlegenden Anforderungen und
den übrigen einschlägigen Bestimmungen der Richtlinie 1999/5/EG befindet.
Eesti
[Estonian] Käesolevaga kinnitab NETGEAR, Inc. seadme 54 Mbps ADSL Modem Wireless Router
Model DG834G vastavust direktiivi 1999/5/EÜ põhinõuetele ja nimetatud direktiivist
tulenevatele teistele asjakohastele sätetele.
English Hereby, NETGEAR, Inc., declares that this 54 Mbps ADSL Modem Wireless Router
Model DG834G 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 54 Mbps ADSL Modem
Wireless Router Model DG834G 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. ∆ΗΛΩΝΕΙ ΟΤΙ 54 Mbps ADSL Modem Wireless
Router Model DG834G ΣΥΜΜΟΡΦΩΝΕΤΑΙ ΠΡΟΣ ΤΙΣ ΟΥΣΙΩ∆ΕΙΣ ΑΠΑΙΤΗΣΕΙΣ ΚΑΙ
ΤΙΣ ΛΟΙΠΕΣ ΣΧΕΤΙΚΕΣ ∆ΙΑΤΑΞΕΙΣ ΤΗΣ Ο∆ΗΓΙΑΣ 1999/5/ΕΚ.
Français
[French] Par la présente NETGEAR, Inc. déclare que l'appareil 54 Mbps ADSL Modem Wireless
Router Model DG834G 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 54 Mbps ADSL Modem Wireless
Router Model DG834G è conforme ai requisiti essenziali ed alle altre disposizioni
pertinenti stabilite dalla direttiva 1999/5/CE.
Latviski
[Latvian] Ar šo NETGEAR, Inc. deklarç, ka 54 Mbps ADSL Modem Wireless Router Model
DG834G atbilst Direktîvas 1999/5/EK bûtiskajâm prasîbâm un citiem ar to saistîtajiem
noteikumiem.
Lietuviø
[Lithuanian] Šiuo NETGEAR, Inc. deklaruoja, kad šis 54 Mbps ADSL Modem Wireless Router
Model DG834G atitinka esminius reikalavimus ir kitas 1999/5/EB Direktyvos nuostatas.

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iv
A printed copy of the EU Declaration of Conformity certificate for this product is provided in the DG834G
v3 product package.
Bestätigung des Herstellers/Importeurs
Es wird hiermit bestätigt, daß das 54 Mbps ADSL Modem Wireless Router Model DG834G 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.
Nederlands
[Dutch] Hierbij verklaart NETGEAR, Inc. dat het toestel 54 Mbps ADSL Modem Wireless Router
Model DG834G in overeenstemming is met de essentiële eisen en de andere relevante
bepalingen van richtlijn 1999/5/EG.
Malti
[Maltese] Hawnhekk, NETGEAR, Inc., jiddikjara li dan 54 Mbps ADSL Modem Wireless Router
Model DG834G jikkonforma mal-tiijiet essenzjali u ma provvedimenti orajn relevanti li
hemm fid-Dirrettiva 1999/5/EC.
Magyar
[Hungarian] Alulírott, NETGEAR, Inc. nyilatkozom, hogy a 54 Mbps ADSL Modem Wireless Router
Model DG834G megfelel a vonatkozó alapvetõ követelményeknek és az 1999/5/EC
irányelv egyéb elõírásainak.
Polski
[Polish] Niniejszym NETGEAR, Inc. oœwiadcza, ¿e 54 Mbps ADSL Modem Wireless Router
Model DG834G jest zgodny z zasadniczymi wymogami oraz pozosta³ymi stosownymi
postanowieniami Dyrektywy 1999/5/EC.
Português
[Portuguese] NETGEAR, Inc. declara que este 54 Mbps ADSL Modem Wireless Router Model
DG834G está conforme com os requisitos essenciais e outras disposições da Directiva
1999/5/CE.
Slovensko
[Slovenian] NETGEAR, Inc. izjavlja, da je ta 54 Mbps ADSL Modem Wireless Router Model
DG834G v skladu z bistvenimi zahtevami in ostalimi relevantnimi doloèili direktive 1999/5/
ES.
Slovensky
[Slovak] NETGEAR, Inc. týmto vyhlasuje, že 54 Mbps ADSL Modem Wireless Router Model
DG834G spåòa základné požiadavky a všetky príslušné ustanovenia Smernice 1999/5/
ES.
Suomi
[Finnish] NETGEAR, Inc. vakuuttaa täten että 54 Mbps ADSL Modem Wireless Router Model
DG834G 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.

v1.0, January 2006
v
Certificate of the Manufacturer/Importer
It is hereby certified that the 54 Mbps ADSL Modem Wireless Router Model DG834G 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 54 Mbps ADSL Modem Wireless Router Model DG834G.
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.
Product and Publication Details
Model Number: DG834G v3
Publication Date: January 2006
Product Family: Modem Router
Product Name: 54 Mbps ADSL Modem Wireless Router Model DG834G
Home or Business Product: Home
Language: English
Publication Part Number: 202-10155-01
Publication Version Number: 1.0

v1.0, January 2006
vi

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v1.0, January 2006
Contents
Reference Manual for the ADSL Modem Wireless Router DG834G
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
802.11 Standards-based Wireless Networking ........................................................2-3
Easy Installation and Management ..........................................................................2-3
Protocol Support ......................................................................................................2-4
Virtual Private Networking (VPN) .............................................................................2-5
Auto Sensing and Auto Uplink™ LAN Ethernet Connections ..................................2-5
Content Filtering .......................................................................................................2-6
Trend Micro Home Network Security .......................................................................2-6
What’s in the Box? ..........................................................................................................2-7
The Router’s Front Panel .........................................................................................2-8
The Router’s Rear Panel .........................................................................................2-9
Connecting the Router to the Internet ..........................................................................2-10
Chapter 3
Wireless Configuration
Considerations for a Wireless Network ..........................................................................3-1
Observe Performance, Placement, and Range Guidelines .....................................3-1
Implement Appropriate Wireless Security ...............................................................3-2
Understanding Wireless Settings ...................................................................................3-3
How to Set Up and Test Basic Wireless Connectivity ..............................................3-6

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How to Restrict Wireless Access to Your Network ...................................................3-7
Choosing WEP Authentication and Security Encryption Methods .........................3-10
How to Configure WEP ..........................................................................................3-12
How to Configure WPA-PSK ..................................................................................3-13
How to Configure WPA-802.1x ..............................................................................3-14
Chapter 4
Protecting Your Network
Protecting Access to Your 54 Mbps ADSL Modem Wireless Router Model DG834G ....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
Trend Micro Home Network Security ............................................................................4-15
Security Service Settings .......................................................................................4-16
Parental Controls Settings .....................................................................................4-18
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

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Viewing Attached Devices ........................................................................................5-9
Viewing, Selecting, and Saving Logged Information ................................................5-9
Examples of Log Messages ...................................................................................5-12
Enabling Security Event E-mail Notification .................................................................5-13
Running Diagnostic Utilities and Rebooting the Modem Router ...................................5-15
Enabling Remote Management ....................................................................................5-16
Configuring Remote Management .........................................................................5-16
Chapter 6
Advanced Configuration
Configuring Advanced Security ......................................................................................6-1
Setting Up A Default DMZ Server ............................................................................6-2
Connect Automatically, as Required ........................................................................6-3
Disable Port Scan and DOS Protection ...................................................................6-3
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 .......................................................................................6-9
How to Configure Dynamic DNS ..............................................................................6-9
Using Static Routes ...................................................................................................... 6-11
Static Route Example ............................................................................................. 6-11
How to Configure Static Routes .............................................................................6-12
Universal Plug and Play (UPnP) ...................................................................................6-13
Chapter 7
Virtual Private Networking
Overview of VPN Configuration ......................................................................................7-2
Client-to-Gateway VPN Tunnels ..............................................................................7-2
Gateway-to-Gateway VPN Tunnels .........................................................................7-3
Planning a VPN ..............................................................................................................7-4
VPN Tunnel Configuration ..............................................................................................7-6
How to Set Up a Client-to-Gateway VPN Configuration .................................................7-7
Step 1: Configuring the Client-to-Gateway VPN Tunnel on the DG834G v3 ...........7-7
Step 2: Configuring the NETGEAR ProSafe VPN Client on the Remote PC .........7-12
How to Set Up a Gateway-to-Gateway VPN Configuration ..........................................7-21

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VPN Tunnel Control ......................................................................................................7-29
Activating a VPN Tunnel ........................................................................................7-29
Verifying the Status of a VPN Tunnel .....................................................................7-33
Deactivating a VPN Tunnel ....................................................................................7-35
Deleting a VPN Tunnel ...........................................................................................7-37
How to Set Up VPN Tunnels in Special Circumstances ...............................................7-38
Using Auto Policy to Configure VPN Tunnels ........................................................7-38
Using Manual Policy to Configure VPN Tunnels ....................................................7-48
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 .........................................................................................8-9
Appendix A
Technical Specifications
Appendix B
NETGEAR VPN Configuration
DG834G v3 to FVL328 .................................................................................................. B-1
Configuration Profile ................................................................................................ B-1
Step-By-Step Configuration ..................................................................................... B-2
DG834G v3 with FQDN to FVL328 ............................................................................... B-6
Configuration Profile ................................................................................................ B-6

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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-18
Monitoring the VPN Tunnel (Telecommuter Example) ................................................. B-28
Viewing the PC Client’s Connection Monitor and Log Viewer ............................... B-28
Viewing the VPN Router’s VPN Status and Log Information ................................ B-29
Appendix C
Related Documents

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v1.0, January 2006

About This Manual 1-1
v1.0, January 2006
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:
Note: Product updates are available on the NETGEAR, Inc. Web site at
http://kbserver.netgear.com/products/DG834G v3.asp.
Table 1-1.
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.
Tip: This format is used to highlight a procedure that will save time or resources.

Reference Manual for the ADSL Modem Wireless Router DG834G
1-2 About This Manual
v1.0, January 2006
This manual is written for the ADSL Modem Wireless Router according to these specifications:
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.
— 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.
Warning: Ignoring this type of note may result in a malfunction or damage to the
equipment.
Danger: This is a safety warning. Failure to take heed of this notice may result in
personal injury or death.
Table 1-2. Manual Scope
Product Version 54 Mbps ADSL Modem Wireless Router Model DG834G
Manual Publication Date January 2006

Reference Manual for the ADSL Modem Wireless Router DG834G
About This Manual 1-3
v1.0, January 2006
— 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.
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.

Reference Manual for the ADSL Modem Wireless Router DG834G
1-4 About This Manual
v1.0, January 2006

Introduction 2-1
v1.0, January 2006
Chapter 2
Introduction
This chapter describes the features of the NETGEAR 54 Mbps ADSL Modem Wireless Router
Model DG834G. The ADSL Modem Wireless 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 54 Mbps ADSL Modem Wireless Router Model DG834G 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 ADSL Modem Wireless Router provides multiple Web content filtering options, reporting,
and instant alerts. 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.
The DG834G v3 also supports Trend Micro Home Network Security, a bundle of services that
includes router-based Parental Controls and network-wide protection from viruses, Trojans,
spyware, spam, and other Internet threats.
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 Wireless Router DG834G
2-2 Introduction
v1.0, January 2006
Key Features
The ADSL Modem Wireless Router provides the following features:
• A built-in ADSL modem
• A powerful, true firewall
• 802.11g standards-based wireless networking
• 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
• Support for Trend Micro Home Network Security
These features are discussed below.
A Powerful, True Firewall
Unlike simple Internet sharing NAT routers, the DG834G 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 DG834G 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 Wireless Router DG834G
Introduction 2-3
v1.0, January 2006
802.11 Standards-based Wireless Networking
The ADSL Modem Wireless Router includes an 802.11g-compliant wireless access point,
providing continuous, high-speed 10/100 Mbps access between your wireless and Ethernet
devices. The access point provides:
• 802.11g Standards-based wireless networking at up to 54 Mbps
• Works with both 802.11g and 802.11b wireless devices
• 64-bit and 128-bit WEP encryption security
• WEP keys can be entered manually or generated by passphrase
• Support for Wi-Fi Protected Access Pre-Shared Key (WPA-PSK) encryption and 802.1x
authentication
• Wireless access can be restricted by MAC address
Easy Installation and Management
You can install, configure, and operate the DG834G 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
The firmware in 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 DG834G v3 when you are
connected on the LAN or when you are connected over the Internet via the remote
management function.

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v1.0, January 2006
• 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 DG834G 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 DG834G 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 DG834G v3 if you want to manage the IP address scheme yourself.
• Automatic Configuration of Attached PCs by DHCP
The DG834G 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.