vi

Contents

Verifying Connections

.....................................................................................................

2-7

Chapter 3

Preparing Your Network

Preparing Your Personal Computers for IP Networking

.................................................

3-1

Configuring Windows 95, 98, and ME for IP Networking

................................................

3-2

Install or Verify Windows Networking Components

..................................................

3-2

Assign TCP/IP configuration by DHCP

....................................................................

3-4

Selecting Internet Access Method

............................................................................

3-4

Verifying TCP/IP Properties

.....................................................................................

3-5

Configuring Windows NT or 2000 for IP Networking

......................................................

3-5

Install or Verify Windows Networking Components

..................................................

3-5

Verifying TCP/IP Properties

.....................................................................................

3-6

Configuring the Macintosh for IP Networking

.................................................................

3-6

MacOS 8.6 or 9.x

...............................................................................................

3-7

MacOS X

...........................................................................................................

3-7

Verifying TCP/IP Properties (Macintosh)

..................................................................

3-8

Your Internet Account

.....................................................................................................

3-8

Login Protocols

........................................................................................................

3-9

Account Information

.................................................................................................

3-9

Obtaining ISP Configuration Information (Windows)

.......................................

3-10

Obtaining ISP Configuration Information (Macintosh)

.....................................

3-11

Restarting the Network

.................................................................................................

3-11

Ready for Configuration

................................................................................................

3-12

Chapter 4

Basic Configuration

Accessing the Web Configuration Manager

...................................................................

4-1

Configuration using the Setup Wizard

............................................................................

4-4

Configuring for Dynamic IP Account

........................................................................

4-5

Configuring for Fixed IP Account

.............................................................................

4-6

Configuring for an Account with Login

.....................................................................

4-7

Manual Configuration

.....................................................................................................

4-8

Completing the Configuration

.........................................................................................

4-9

Chapter 5

Security

What is a Firewall

...........................................................................................................

5-1

Contents

vii

Security Log

....................................................................................................................

5-2

Examples of log messages

......................................................................................

5-4

Activation and Administration

............................................................................

5-4

Dropped Packets

...............................................................................................

5-4

Block Sites

......................................................................................................................

5-5

Rules

..............................................................................................................................

5-6

Inbound Rules (Port Forwarding)

.............................................................................

5-8

Inbound Rule Example: A Local Public Web Server

..........................................

5-9

Inbound Rule Example: Allowing Videoconference from Restricted Addresses 5-10

Considerations for Inbound Rules:

..................................................................

5-10

Outbound Rules (Service Blocking)

.......................................................................

5-11

Following is an application example of outbound rules:

..................................

5-11

Outbound Rule Example: Blocking Instant Messenger

...................................

5-11

Order of Precedence for Rules

..............................................................................

5-12

Default DMZ Server

...............................................................................................

5-12

Respond to Ping on Internet WAN Port

.................................................................

5-13

Services

........................................................................................................................

5-14

Schedule

.......................................................................................................................

5-16

Time Zone

........................................................................................................

5-17

E-Mail

...........................................................................................................................

5-18

Chapter 6

Wireless

Wireless Settings

............................................................................................................

6-2

Identification

......................................................................................................

6-2

Options

..............................................................................................................

6-3

Access Point

......................................................................................................

6-3

Configuring WEP (Wired Equivalent Privacy)

.................................................................

6-4

Restricting Wireless Access by MAC Address

...............................................................

6-5

Additional Notes

.............................................................................................................

6-6

Security

....................................................................................................................

6-6

Placement and Range

..............................................................................................

6-6

Chapter 7

Print Server

Network Printing from Windows

.....................................................................................

7-1

Installing the PTP Driver

..........................................................................................

7-1

viii

Contents

Printer Management

..........................................................................................

7-3

Port Options

.......................................................................................................

7-3

LPD/LPR Printing from Windows

.............................................................................

7-4

Windows NT 4.0 Server Configuration

..............................................................

7-5

Client PC Setup for LPD/LPR Printing

...............................................................

7-7

Network Printing from the Macintosh

..............................................................................

7-9

MacOS 8 or 9 Configuration

.....................................................................................

7-9

MacOS X Configuration

.........................................................................................

7-10

Network Printing from Linux

.........................................................................................

7-10

Troubleshooting the Print Server

..................................................................................

7-10

Chapter 8

Maintenance

System Status

.................................................................................................................

8-1

Attached Devices

............................................................................................................

8-4

Changing the Administration Password

..........................................................................

8-4

Configuration File Settings Management

.......................................................................

8-5

Restore and Backup the Configuration

....................................................................

8-6

Erase the Configuration

...........................................................................................

8-6

Router Upgrade

..............................................................................................................

8-7

Diagnostics

.....................................................................................................................

8-8

Ping an IP Address

..................................................................................................

8-8

Perform a DNS Lookup

............................................................................................

8-8

Display the Routing Table

........................................................................................

8-9

Reboot the Router

....................................................................................................

8-9

Chapter 9

Advanced Configuration

Dynamic DNS

.................................................................................................................

9-1

LAN IP Setup

..................................................................................................................

9-3

LAN TCP/IP Setup

...................................................................................................

9-3

MTU Size

.................................................................................................................

9-5

DHCP

.......................................................................................................................

9-5

Use router as DHCP server

...............................................................................

9-5

Reserved IP adresses

.......................................................................................

9-6

Static Routes

..................................................................................................................

9-6

Static Route Example

...............................................................................................

9-8

Contents

ix

Remote Management

.....................................................................................................

9-9

Chapter 10

Troubleshooting

Basic Functioning

.........................................................................................................

10-1

Power LED Not On

.................................................................................................

10-2

Test LED Never Turns On or Test LED Stays On

...................................................

10-2

Local or Internet Port Link LEDs Not On

................................................................

10-2

Troubleshooting the Web Configuration Interface

........................................................

10-4

Troubleshooting the ISP Connection

............................................................................

10-5

Troubleshooting a TCP/IP Network Using a Ping Utility

...............................................

10-6

Testing the LAN Path to Your Firewall

....................................................................

10-6

Testing the Path from Your PC to a Remote Device

..............................................

10-7

Restoring the Default Configuration and Password

......................................................

10-8

Using the Default Reset button

..............................................................................

10-8

Problems with Date and Time

.......................................................................................

10-8

Appendix A

Technical Specifications

Appendix B

Networks, Routing, and Firewall Basics

Basic Router Concepts

..................................................................................................

B-1

What is a Router?

...................................................................................................

B-1

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

Domain Name Server

..............................................................................................

B-9

IP Configuration by DHCP

....................................................................................

B-10

Internet Security and Firewalls

....................................................................................

B-10

What is a Firewall?

................................................................................................

B-10

Stateful Packet Inspection

......................................................................................

B-11

Denial of Service Attack

.........................................................................................

B-11

Wireless Networking

....................................................................................................

B-12

x

Contents

Wireless Network Configuration

............................................................................

B-12

Ad-hoc Mode (Peer-to-Peer Workgroup)

........................................................

B-12

Infrastructure Mode

........................................................................................

B-12

Extended Service Set Identification (ESSID)

........................................................

B-13

Authentication and WEP Encryption

.....................................................................

B-13

Wireless Channel Selection

..................................................................................

B-14

Ethernet Cabling

..........................................................................................................

B-15

Uplink Switches and Crossover Cables

................................................................

B-16

Cable Quality

.........................................................................................................

B-16

Glossary

Index