Reference Manual for the Model DG632 ADSL Modem Router

2-2

Introduction

–

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.

Reference Manual for the Model DG632 ADSL Modem Router

Introduction

2-3

•

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.

The modem incorporates Auto Uplink

TM

technology. The 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.

Reference Manual for the Model DG632 ADSL Modem Router

2-4

Introduction

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

Reference Manual for the Model DG632 ADSL Modem Router

Introduction

2-5

What’s In The Box?

The product package should contain the following items.

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

DG632 ADSL Firewall Router

Resource CD, installation guide,

support information card &

warranty/registration card

Power adapter

Category 5

100 Mbps

Ethernet cable

Phone Cable

Micro Filter

ADSL Firewall Router DG632

Reference Manual for the Model DG632 ADSL Modem Router

2-6

Introduction

•

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.

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

Power is supplied to the modem.

Power is not supplied to the modem.

Internet

Blink — Amber

On — Green

Blink — Green

Indicates ADSL training.

The Internet port has detected a link with an attached device.

Data is being transmitted or received by the Internet port.

Power

USB

Internet

Ethernet