vi

Contents

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

Contents

vii

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

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Contents

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

Contents

ix

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

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