ZyXEL G-2000 Plus V2 User Manual

ZyXEL G-2000 Plus v2

4-port Wireless Router

User’s Guide

Version 3.60

Edition 1

2/2006

ZyXEL G-2000 Plus v2 User’s Guide

Copyright

Copyright © 2006 by ZyXEL Communications Corporation.

The contents of this publication may not be reproduced in any part or as a whole, transcribed,
stored in a retrieval system, translated into any language, or transmitted in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, photocopying, manual, or
otherwise, without the prior written permission of ZyXEL Communications Corporation.

Published by ZyXEL Communications Corporation. All rights reserved.

Disclaimer

ZyXEL does not assume any liability arising out of the application or use of any products, or
software described herein. Neither does it convey any license under its patent rights nor the
patent rights of others. ZyXEL further reserves the right to make changes in any products
described herein without notice. This publication is subject to change without notice.

Trademarks

ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL
Communications, Inc. Other trademarks mentioned in this publication are used for
identification purposes only and may be properties of their respective owners.

Copyright 3

ZyXEL G-2000 Plus v2 User’s Guide

Federal Communications Commission (FCC) Interference Statement

This device complies with Part 15 of FCC rules. Operation is subject to the following two
conditions:

• This device may not cause harmful interference.

• This device must accept any interference received, including interference that may cause
undesired operations.

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

Certifications

If this equipment does cause harmful interference to radio/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 the 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.

This Class B digital apparatus complies with Canadian ICES-003.

Cet appareil numérique de la classe B est conforme à la norme NMB-003 du Canada.

FCC Caution

Any changes or modifications not expressly approved by the party responsible for compliance
could void the user's authority to operate this equipment.

IMPORTANT NOTE: FCC Radiation Exposure Statement

This equipment complies with FCC radiation exposure limits set forth for an uncontrolled
environment. This equipment should be installed and operated with minimum distance 20cm
between the radiator & your body.

This transmitter must not be co-located or operating in conjunction with any other antenna or
transmitter.

4 Certifications

ZyXEL G-2000 Plus v2 User’s Guide

ZyXEL Communications Corporation declared that P-662H/HW-Dx is limited in CH1~11
from 2400 to 2483.5 MHz by specified firmware controlled in USA.

Certifications

1 Go to www.zyxel.com

2 Select your product from the drop-down list box on the ZyXEL home

page to go to that product's page.

3 Select the certification you wish to view from this page.

Certifications 5

ZyXEL G-2000 Plus v2 User’s Guide

For your safety, be sure to read and follow all warning notices and instructions.

• To reduce the risk of fire, use only No. 26 AWG (American Wire Gauge) or larger
telecommunication line cord.

• Do NOT open the device or unit. Opening or removing covers can expose you to
dangerous high voltage points or other risks. ONLY qualified service personnel can
service the device. Please contact your vendor for further information.

• Use ONLY the dedicated power supply for your device. Connect the power cord or
power adaptor to the right supply voltage (110V AC in North America or 230V AC in
Europe).

• Do NOT use the device if the power supply is damaged as it might cause electrocution.

• If the power supply is damaged, remove it from the power outlet.

• Do NOT attempt to repair the power supply. Contact your local vendor to order a new
power supply.

• Place connecting cables carefully so that no one will step on them or stumble over them.
Do NOT allow anything to rest on the power cord and do NOT locate the product where
anyone can walk on the power cord.

• If you wall mount your device, make sure that no electrical, gas or water pipes will be
damaged.

• Do NOT install nor use your device during a thunderstorm. There may be a remote risk of
electric shock from lightning.

• Do NOT expose your device to dampness, dust or corrosive liquids.

• Do NOT use this product near water, for example, in a wet basement or near a swimming
pool.

• Make sure to connect the cables to the correct ports.

• Do NOT obstruct the device ventilation slots, as insufficient airflow may harm your
device.

• Do NOT store things on the device.

• Connect ONLY suitable accessories to the device.

Safety Warnings

6 Safety Warnings

ZyXEL G-2000 Plus v2 User’s Guide

ZyXEL Limited Warranty

ZyXEL warrants to the original end user (purchaser) that this product is free from any defects
in materials or workmanship for a period of up to two years from the date of purchase. During
the warranty period, and upon proof of purchase, should the product have indications of failure
due to faulty workmanship and/or materials, ZyXEL will, at its discretion, repair or replace the
defective products or components without charge for either parts or labor, and to whatever
extent it shall deem necessary to restore the product or components to proper operating
condition. Any replacement will consist of a new or re-manufactured functionally equivalent
product of equal or higher value, and will be solely at the discretion of ZyXEL. This warranty
shall not apply if the product has been modified, misused, tampered with, damaged by an act
of God, or subjected to abnormal working conditions.

Note

Repair or replacement, as provided under this warranty, is the exclusive remedy of the
purchaser. This warranty is in lieu of all other warranties, express or implied, including any
implied warranty of merchantability or fitness for a particular use or purpose. ZyXEL shall in
no event be held liable for indirect or consequential damages of any kind to the purchaser.

To obtain the services of this warranty, contact ZyXEL's Service Center for your Return
Material Authorization number (RMA). Products must be returned Postage Prepaid. It is
recommended that the unit be insured when shipped. Any returned products without proof of
purchase or those with an out-dated warranty will be repaired or replaced (at the discretion of
ZyXEL) and the customer will be billed for parts and labor. All repaired or replaced products
will be shipped by ZyXEL to the corresponding return address, Postage Paid. This warranty
gives you specific legal rights, and you may also have other rights that vary from country to
country.

ZyXEL Limited Warranty 7

ZyXEL G-2000 Plus v2 User’s Guide

Please have the following information ready when you contact customer support.

• Product model and serial number.

• Warranty Information.

• Date that you received your device.

• Brief description of the problem and the steps you took to solve it.

Customer Support

METHOD

LOCATION

CORPORATE
HEADQUARTERS
(WORLDWIDE)

CZECH REPUBLIC

DENMARK

FINLAND

FRANCE

GERMANY

HUNGARY

KAZAKHSTAN

NORTH AMERICA

NORWAY

SUPPORT E-MAIL TELEPHONE

SALES E-MAIL FAX FTP SITE

[e-mail] [phone] www.zyxel.com

[e-mail] [phone] ftp.zyxel.com

[e-mail] [phone] www.zyxel.cz ZyXEL Communications

[e-mail] [phone]

[e-mail] [phone] www.zyxel.dk ZyXEL Communications A/S

[e-mail] [phone]

[e-mail] [phone] www.zyxel.fi ZyXEL Communications Oy

[e-mail] [phone]

[e-mail] [phone] www.zyxel.fr ZyXEL France

[phone]

[e-mail] [phone] www.zyxel.de ZyXEL Deutschland GmbH.

[e-mail] [phone]

[e-mail] [phone] www.zyxel.hu ZyXEL Hungary

[e-mail] [phone]

http://zyxel.kz/support [phone] www.zyxel.kz ZyXEL Kazakhstan

[e-mail] [phone]

[e-mail] 1-800-255-4101

[phone]

[e-mail] [phone] ftp.us.zyxel.com

[e-mail] [phone] www.zyxel.no ZyXEL Communications A/S

[e-mail] [phone]

1

WEB SITE

www.europe.zyxel.com

ftp.europe.zyxel.com

www.us.zyxel.com ZyXEL Communications Inc.

REGULAR MAIL

ZyXEL Communications Corp.
6 Innovation Road II

Science Park
Hsinchu 300
Ta iw a n

Czech s.r.o.
Modranská 621
143 01 Praha 4 - Modrany
Ceská Republika

Columbusvej
2860 Soeborg
Denmark

Malminkaari 10
00700 Helsinki
Finland

1 rue des Vergers
Bat. 1 / C
69760 Limonest
France

Adenauerstr. 20/A2 D-52146
Wuerselen
Germany

48, Zoldlomb Str.
H-1025, Budapest
Hungary

43, Dostyk ave.,Office 414
Dostyk Business Centre
050010, Almaty
Republic of Kazakhstan

1130 N. Miller St.
Anaheim
CA 92806-2001
U.S.A.

Nils Hansens vei 13
0667 Oslo
Norway

8 Customer Support

ZyXEL G-2000 Plus v2 User’s Guide

METHOD

LOCATION

POLAND

RUSSIA

SPAIN

SWEDEN

UKRAINE

UNITED KINGDOM

1. “+” is the (prefix) number you enter to make an international telephone call.

SUPPORT E-MAIL TELEPHONE

SALES E-MAIL FAX FTP SITE

[e-mail] [phone] www.pl.zyxel.com ZyXEL Communications

[phone]

http://zyxel.ru/support [phone] www.zyxel.ru ZyXEL Russia

[e-mail] [phone]

[e-mail] [phone] www.zyxel.es ZyXEL Communications

[e-mail] [phone]

[e-mail] [phone] www.zyxel.se ZyXEL Communications A/S

[e-mail] [phone]

[e-mail] [phone] www.ua.zyxel.com ZyXEL Ukraine

[e-mail] [phone]

[e-mail] [phone]

08707 555779 (UK only)

[e-mail] [phone] ftp.zyxel.co.uk

1

WEB SITE

REGULAR MAIL

ul.Emilli Plater 53
00-113 Warszawa
Poland

Ostrovityanova 37a Str.
Moscow, 117279
Russia

Arte, 21 5ª planta

28033 Madrid

Spain

Sjöporten 4, 41764 Göteborg
Sweden

13, Pimonenko Str.
Kiev, 04050
Ukraine

www.zyxel.co.uk ZyXEL Communications UK

Ltd.,11 The Courtyard,
Eastern Road, Bracknell,
Berkshire, RG12 2XB,
United Kingdom (UK)

Customer Support 9

ZyXEL G-2000 Plus v2 User’s Guide

10 Customer Support

ZyXEL G-2000 Plus v2 User’s Guide

Table of Contents

Copyright ..................................................................................................................3

Certifications ............................................................................................................4

Safety Warnings ....................................................................................................... 6

ZyXEL Limited Warranty.......................................................................................... 7

Customer Support.................................................................................................... 8

Table of Contents ................................................................................................... 11

List of Figures ........................................................................................................ 25

List of Tables .......................................................................................................... 31

Preface ....................................................................................................................35

Chapter 1

Getting to Know Your Device ................................................................................ 37

1.1 Introducing the ZyXEL G-2000 Plus v2 .............................................................37

1.2 Features .............................................................................................................37

1.2.1 Physical Features .....................................................................................37

1.2.2 Firmware Features ....................................................................................38

1.3 Applications for the ZyXEL device .....................................................................43

1.3.1 Internet Access and Wireless Network .....................................................43

1.3.2 Firewall for Secure Broadband Internet Access .......................................44

Chapter 2

Introducing the Web Configurator........................................................................ 45

2.1 Web Configurator Overview ...............................................................................45

2.2 Accessing the ZyXEL device Web Configurator ................................................45

2.3 Resetting the ZyXEL device ...............................................................................47

2.3.1 .Procedure To Use The Reset Button .......................................................47

2.3.2 Method of Restoring Factory-Defaults Via Web Configurator ...................47

2.4 Navigating the ZyXEL device Web Configurator ................................................47

Chapter 3

Wizard Setup .......................................................................................................... 51

3.1 Wizard Setup Overview ......................................................................................51

3.2 General Setup ....................................................................................................51

Table of Contents 11

ZyXEL G-2000 Plus v2 User’s Guide

3.3 Wizard Setup Wireless LAN ...............................................................................52

3.3.1 Name (SSID), Channel ID and Security ...................................................53

3.3.2 Configuring WEP or WPA(2)-PSK Security ...............................................54

3.3.3 Confirm Security Settings ..........................................................................55

3.4 Wizard Setup WAN ............................................................................................56

3.4.1 Ethernet .....................................................................................................56

3.4.2 PPPoE Encapsulation................................................................................58

3.4.3 PPTP Encapsulation..................................................................................59

3.5 Wizard Setup WAN IP .......................................................................................61

3.5.1 WAN IP Address Assignment ...................................................................61

3.5.2 IP Address and Subnet Mask ...................................................................61

3.5.3 DNS Server Address Assignment .............................................................62

3.5.4 WAN MAC Address ..................................................................................62

3.6 Basic Setup Complete ........................................................................................64

Chapter 4

System Screens ..................................................................................................... 67

4.1 System Overview ...............................................................................................67

4.2 Configuring General Setup .............................................................................67

4.3 Dynamic DNS ...................................................................................................68

4.3.1 DynDNS Wildcard .....................................................................................68

4.4 Configuring Dynamic DNS .................................................................................69

4.5 Configuring Password ......................................................................................70

4.6 Configuring Time Setting .................................................................................71

Chapter 5

LAN Screens........................................................................................................... 73

5.1 LAN Overview ....................................................................................................73

5.2 DHCP Setup .......................................................................................................73

5.2.1 IP Pool Setup ............................................................................................73

5.2.2 System DNS Servers ................................................................................73

5.3 LAN TCP/IP ........................................................................................................73

5.3.1 Factory LAN Defaults ................................................................................73

5.3.2 IP Address and Subnet Mask ...................................................................74

5.3.3 RIP Setup .................................................................................................74

5.3.4 Multicast ....................................................................................................74

5.4 Configuring IP ...................................................................................................75

5.5 Configuring Static DHCP ...................................................................................78

5.6 Configuring IP Alias ..........................................................................................79

Chapter 6

Wireless LAN .......................................................................................................... 81

6.1 Wireless Network Overview ...............................................................................81

12 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

6.2 Wireless Security Overview ...............................................................................82

6.2.1 SSID .........................................................................................................82

6.2.2 MAC Address Filter ...................................................................................82

6.2.3 User Authentication ..................................................................................82

6.2.4 Encryption .................................................................................................83

6.3 Additional Wireless Terms ..................................................................................84

6.4 Configuring Wireless .........................................................................................84

6.5 Wireless Security - No Security ..........................................................................86

6.6 Configuring WEP Encryption ..............................................................................87

6.7 Configuring WPA(2)-PSK Authentication ...........................................................89

6.8 Configuring WPA(2) Authentication ....................................................................91

6.9 Configuring RADIUS ..........................................................................................93

6.10 Configuring 802.1x ...........................................................................................95

6.11 MAC Filter ......................................................................................................97

6.12 Configuring Roaming .....................................................................................99

Chapter 7

WAN....................................................................................................................... 101

7.1 WAN Overview .................................................................................................101

7.2 Configuring WAN ISP ......................................................................................101

7.2.1 Ethernet Encapsulation............................................................................101

7.2.1.1 Service Type .................................................................................102

7.2.2 PPPoE Encapsulation .............................................................................103

7.2.3 PPTP Encapsulation ...............................................................................105

7.3 Configuring WAN IP ........................................................................................107

7.4 Configuring WAN MAC ....................................................................................110

Chapter 8

Single User Account (SUA) / Network Address Translation (NAT).................. 113

8.1 NAT Overview ..................................................................................................113

8.1.1 NAT Definitions ....................................................................................... 113

8.1.2 What NAT Does ......................................................................................114

8.1.3 How NAT Works ..................................................................................... 114

8.1.4 NAT Application ......................................................................................115

8.1.5 NAT Mapping Types ............................................................................... 116

8.2 Using NAT ........................................................................................................117

8.2.1 SUA (Single User Account) Versus NAT ................................................117

8.3 SUA Server ......................................................................................................117

8.3.1 Default Server IP Address ......................................................................118

8.3.2 Port Forwarding: Services and Port Numbers ........................................118

8.3.3 Configuring Servers Behind SUA (Example) ..........................................119

8.4 Configuring SUA Server .................................................................................. 119

8.5 Configuring Address Mapping .........................................................................121

Table of Contents 13

ZyXEL G-2000 Plus v2 User’s Guide

8.5.1 Configuring Address Mapping ...............................................................123

8.6 Trigger Port Forwarding ...................................................................................125

8.6.1 Trigger Port Forwarding Example ...........................................................126

8.6.2 Two Points To Remember About Trigger Ports .......................................126

8.7 Configuring Trigger Port Forwarding ...............................................................126

Chapter 9

Static Route Screens ........................................................................................... 129

9.1 Static Route Overview ......................................................................................129

9.2 Configuring IP Static Route ...........................................................................129

9.2.1 Configuring Route Entry .........................................................................131

Chapter 10

Firewalls................................................................................................................ 133

10.1 Firewall Overview ...........................................................................................133

10.2 Types of Firewalls ..........................................................................................133

10.2.1 Packet Filtering Firewalls ......................................................................133

10.2.2 Application-level Firewalls ....................................................................133

10.2.3 Stateful Inspection Firewalls .................................................................134

10.3 Introduction to ZyXEL’s Firewall .....................................................................134

10.4 Denial of Service ............................................................................................135

10.4.1 Basics ...................................................................................................135

10.4.2 Types of DoS Attacks ...........................................................................136

10.4.2.1 ICMP Vulnerability ......................................................................139

10.4.2.2 Traceroute ...................................................................................139

10.5 Stateful Inspection ..........................................................................................140

10.5.1 Stateful Inspection Process ..................................................................140

10.5.2 Stateful Inspection and the ZyXEL device ............................................141

10.5.3 TCP Security .........................................................................................142

10.5.4 UDP/ICMP Security ..............................................................................142

10.5.5 Upper Layer Protocols ..........................................................................142

10.6 Guidelines For Enhancing Security With Your Firewall ..................................143

10.7 Packet Filtering Vs Firewall ............................................................................143

10.7.1 Packet Filtering: ....................................................................................143

10.7.1.1 When To Use Filtering .................................................................144

10.7.2 Firewall .................................................................................................144

10.7.2.1 When To Use The Firewall ..........................................................144

Chapter 11

Firewall Screens................................................................................................... 145

11.1 Access Methods .............................................................................................145

11.2 Firewall Policies Overview ..............................................................................145

11.3 Rule Logic Overview ......................................................................................146

14 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

11.3.1 Rule Checklist .......................................................................................146

11.3.2 Security Ramifications ..........................................................................146

11.3.3 Key Fields For Configuring Rules .........................................................147

11.3.3.1 Action ...........................................................................................147

11.3.3.2 Service .........................................................................................147

11.3.3.3 Source Address ...........................................................................147

11.3.3.4 Destination Address ....................................................................147

11.4 Connection Direction Examples .....................................................................147

11.4.1 LAN to WAN Rules ................................................................................148

11.4.2 WAN to LAN Rules ................................................................................148

11.5 Alerts ..............................................................................................................149

11.6 Configuring Firewall .......................................................................................149

11.6.1 Rule Summary ......................................................................................150

11.6.2 Configuring Firewall Rules ...................................................................152

11.6.3 Configuring Custom Services ...............................................................155

11.7 Example Firewall Rule ....................................................................................156

11.8 Predefined Services .......................................................................................159

Chapter 12

Content Filtering ................................................................................................. 163

12.1 Introduction to Content Filtering .....................................................................163

12.2 Restrict Web Features ...................................................................................163

12.3 Days and Times .............................................................................................163

12.4 Configure Content Filtering ...........................................................................163

Chapter 13

Remote Management Screens ............................................................................ 167

13.1 Remote Management Overview .....................................................................167

13.1.1 Remote Management Limitations .........................................................167

13.1.2 Remote Management and NAT ............................................................168

13.1.3 System Timeout ...................................................................................168

13.2 Configuring WWW ........................................................................................168

13.3 Configuring TELNET .....................................................................................169

13.4 Configuring FTP ............................................................................................171

13.5 SNMP ...........................................................................................................172

13.5.1 Supported MIBs ....................................................................................173

13.5.2 SNMP Traps .........................................................................................173

13.5.3 Configuring SNMP ................................................................................174

13.6 Configuring DNS ...........................................................................................175

13.7 Configuring Security ......................................................................................176

Table of Contents 15

ZyXEL G-2000 Plus v2 User’s Guide

Chapter 14

UPnP...................................................................................................................... 179

14.1 Universal Plug and Play Overview ................................................................179

14.1.1 How Do I Know If I'm Using UPnP? ......................................................179

14.1.2 NAT Traversal .......................................................................................179

14.1.3 Cautions with UPnP ..............................................................................179

14.2 UPnP and ZyXEL ...........................................................................................180

14.3 Configuring UPnP .........................................................................................180

14.4 Installing UPnP in Windows Example ............................................................181

14.4.1 Installing UPnP in Windows Me ............................................................181

14.4.2 Installing UPnP in Windows XP ............................................................182

14.5 Using UPnP in Windows XP Example ...........................................................183

14.5.1 Auto-discover Your UPnP-enabled Network Device .............................184

14.5.2 Web Configurator Easy Access ............................................................185

14.5.3 Web Configurator Easy Access ............................................................186

Chapter 15

Internal RADIUS Server ....................................................................................... 189

15.1 Internal RADIUS Overview .............................................................................189

15.2 Internal RADIUS Server Setting ....................................................................191

15.3 Trusted AP Overview .....................................................................................193

15.4 Configuring Trusted AP .................................................................................194

15.5 Trusted Users Overview .................................................................................195

15.6 Configuring Trusted Users ............................................................................195

Chapter 16

Certificates............................................................................................................ 199

16.1 Certificates Overview .....................................................................................199

16.1.1 Advantages of Certificates ....................................................................200

16.2 Self-signed Certificates ..................................................................................200

16.3 Configuration Summary .................................................................................200

16.4 My Certificates ..............................................................................................200

16.5 Certificate File Formats ..................................................................................203

16.6 Importing a Certificate ...................................................................................203

16.7 Creating a Certificate ....................................................................................204

16.8 My Certificate Details ....................................................................................207

16.9 Trusted CAs ..................................................................................................210

16.10 Importing a Trusted CA’s Certificate ............................................................212

16.11 Trusted CA Certificate Details .....................................................................213

Chapter 17

Log Screens.......................................................................................................... 217

17.1 Configuring View Log ...................................................................................217

16 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

17.2 Configuring Log Settings ...............................................................................218

17.3 Configuring Reports ......................................................................................221

Chapter 18

Maintenance ......................................................................................................... 223

18.1 Maintenance Overview ...................................................................................223

18.2 System Status Screen ...................................................................................223

18.2.1 System Statistics....................................................................................225

18.3 DHCP Table Screen ......................................................................................225

18.4 Association List .............................................................................................227

18.5 F/W Upload Screen .......................................................................................228

18.6 Configuration Screen ....................................................................................230

18.6.1 Backup Configuration .........................................................................231

18.6.2 Restore Configuration ..........................................................................231

18.6.3 Back to Factory Defaults ......................................................................233

18.7 Restart Screen ..............................................................................................233

Chapter 19

Introducing the SMT ............................................................................................235

19.1 SMT Introduction ............................................................................................235

19.2 Connect to your ZyXEL device Using Telnet ..................................................235

19.2.1 Entering Password ................................................................................235

19.3 Changing the System Password ....................................................................236

19.4 ZyXEL device SMT Menu Overview Example ...............................................236

19.5 Navigating the SMT Interface .........................................................................237

19.5.1 System Management Terminal Interface Summary ..............................239

19.6 Changing the System Password ....................................................................239

Chapter 20

General Setup....................................................................................................... 241

20.1 General Setup ................................................................................................241

20.1.1 Procedure To Configure Menu 1 ...........................................................241

20.1.2 Procedure to Configure Dynamic DNS .................................................243

Chapter 21

Menu 2 WAN Setup .............................................................................................. 245

21.1 Introduction to WAN .......................................................................................245

21.2 WAN Setup .....................................................................................................245

Chapter 22

LAN Setup............................................................................................................. 247

22.1 LAN Setup ......................................................................................................247

22.1.1 General Ethernet Setup ........................................................................247

Table of Contents 17

ZyXEL G-2000 Plus v2 User’s Guide

22.2 Protocol Dependent Ethernet Setup ..............................................................248

22.3 TCP/IP Ethernet Setup and DHCP ................................................................248

22.3.1 IP Alias Setup .......................................................................................250

22.4 Wireless LAN Setup .......................................................................................252

22.4.1 Configuring MAC Address Filter ...........................................................254

Chapter 23

Internet Access .................................................................................................... 257

23.1 Introduction to Internet Access Setup ............................................................257

23.2 Ethernet Encapsulation ..................................................................................257

23.3 Configuring the PPTP Client ..........................................................................258

23.4 Configuring the PPPoE Client ........................................................................260

23.5 Basic Setup Complete ....................................................................................261

Chapter 24

Remote Node Configuration ............................................................................... 263

24.1 Introduction to Remote Node Setup ...............................................................263

24.2 Remote Node Profile Setup ...........................................................................263

24.2.1 Ethernet Encapsulation .........................................................................263

24.2.2 PPPoE Encapsulation ...........................................................................266

24.2.2.1 Outgoing Authentication Protocol ................................................266

24.2.2.2 Nailed-Up Connection .................................................................266

24.2.3 PPTP Encapsulation .............................................................................267

24.3 Edit IP .............................................................................................................269

24.4 Remote Node Filter ........................................................................................271

Chapter 25

Static Route Setup ............................................................................................... 273

25.1 IP Static Route Setup .....................................................................................273

Chapter 26

Dial-in User Setup ................................................................................................ 275

26.1 Dial-in User Setup ..........................................................................................275

Chapter 27

Network Address Translation (NAT)................................................................... 277

27.1 Using NAT ......................................................................................................277

27.1.1 SUA (Single User Account) Versus NAT ..............................................277

27.2 Applying NAT .................................................................................................277

27.3 NAT Setup ......................................................................................................279

27.3.1 Address Mapping Sets ..........................................................................279

27.3.1.1 User-Defined Address Mapping Sets ..........................................281

27.3.1.2 Ordering Your Rules ....................................................................282

18 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

27.4 Configuring a Server behind NAT ..................................................................284

27.5 General NAT Examples ..................................................................................285

27.5.1 Example 1: Internet Access Only ..........................................................286

27.5.2 Example 2: Internet Access with an Inside Server ...............................286

27.5.3 Example 3: Multiple Public IP Addresses With Inside Servers .............287

27.5.4 Example 4: NAT Unfriendly Application Programs ...............................291

27.6 Configuring Trigger Port Forwarding .............................................................292

Chapter 28

Filter Configuration.............................................................................................. 295

28.1 Introduction to Filters ......................................................................................295

28.1.1 The Filter Structure of the ZyXEL device ..............................................296

28.2 Configuring a Filter Set ..................................................................................297

28.2.1 Configuring a Filter Rule .......................................................................300

28.2.2 Configuring a TCP/IP Filter Rule ..........................................................300

28.2.3 Configuring a Generic Filter Rule .........................................................304

28.3 Example Filter ................................................................................................306

28.4 Filter Types and NAT ......................................................................................309

28.5 Firewall Versus Filters ....................................................................................309

28.6 Applying a Filter ............................................................................................309

28.6.1 Applying LAN Filters .............................................................................309

28.6.2 Applying Remote Node Filters ..............................................................310

Chapter 29

Enabling the Firewall ........................................................................................... 311

29.1 Remote Management and the Firewall .......................................................... 311

29.2 Access Methods ............................................................................................. 311

29.3 Enabling the Firewall ...................................................................................... 311

Chapter 30

SNMP Configuration ............................................................................................ 313

30.1 About SNMP ..................................................................................................313

30.2 Supported MIBs ............................................................................................314

30.3 SNMP Configuration ......................................................................................314

30.4 SNMP Traps ...................................................................................................315

Chapter 31

System Security ................................................................................................... 317

31.1 System Security .............................................................................................317

31.1.1 System Password .................................................................................317

31.1.2 Configuring External RADIUS Server ...................................................317

31.1.3 802.1x ...................................................................................................319

Table of Contents 19

ZyXEL G-2000 Plus v2 User’s Guide

Chapter 32

System Information and Diagnosis .................................................................... 323

32.1 System Status ................................................................................................323

32.2 System Information ........................................................................................325

32.2.1 System Information ...............................................................................325

32.2.2 Console Port Speed ..............................................................................326

32.3 Log and Trace ................................................................................................326

32.3.1 Viewing Error Log .................................................................................326

32.3.2 UNIX Syslog .........................................................................................327

32.3.2.1 CDR ............................................................................................328

32.3.2.2 Packet triggered ..........................................................................328

32.3.2.3 Filter log .....................................................................................329

32.3.2.4 PPP log ......................................................................................329

32.3.2.5 Firewall log ..................................................................................330

32.3.3 Call-Triggering Packet ..........................................................................330

32.4 Diagnostic ......................................................................................................331

32.4.1 WAN DHCP ..........................................................................................332

Chapter 33

Firmware and Configuration File Maintenance ................................................. 335

33.1 Filename Conventions ...................................................................................335

33.2 Backup Configuration .....................................................................................336

33.2.1 Backup Configuration Using FTP .........................................................336

33.2.2 Using the FTP command from the DOS Prompt ..................................337

33.2.3 GUI-based FTP Clients .........................................................................338

33.2.4 TFTP and FTP over WAN Management Limitations .............................338

33.2.5 Backup Configuration Using TFTP .......................................................339

33.2.6 Example: TFTP Command ...................................................................339

33.2.7 GUI-based TFTP Clients ......................................................................340

33.3 Restore Configuration ...................................................................................340

33.3.1 Restore Using FTP ...............................................................................340

33.3.2 Restore Using FTP Session Example ..................................................341

33.4 Uploading Firmware and Configuration Files .................................................342

33.4.1 Firmware Upload ..................................................................................342

33.4.2 Configuration File Upload .....................................................................343

33.4.3 Using the FTP command from the DOS Prompt Example ...................343

33.4.4 TFTP File Upload ..................................................................................344

33.4.5 Example: TFTP Command ...................................................................345

Chapter 34

System Maintenance and Information ...............................................................347

34.1 Command Interpreter Mode ...........................................................................347

34.2 Call Control Support .......................................................................................348

20 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

34.2.1 Budget Management ............................................................................349

34.2.2 Call History ...........................................................................................350

34.3 Time and Date Setting ....................................................................................351

34.3.1 Resetting the Time ................................................................................353

Chapter 35

Remote Management ........................................................................................... 355

35.1 Remote Management .....................................................................................355

35.1.1 Telnet ....................................................................................................356

35.1.2 FTP .......................................................................................................357

35.1.3 Web ......................................................................................................357

35.1.4 Remote Management Limitations .........................................................357

35.2 Remote Management and NAT ......................................................................357

35.3 System Timeout .............................................................................................358

Chapter 36

Call Scheduling .................................................................................................... 359

36.1 Introduction to Call Scheduling ......................................................................359

Chapter 37

Troubleshooting ................................................................................................... 363

Problems Starting Up the ZyXEL device ................................................................ 363

Problems with the Ethernet Interface ..................................................................... 363

Problems with the Password.................................................................................. 364

Problems with Telnet .............................................................................................. 364

Problems with the WLAN Interface ........................................................................ 364

Appendix A

Product Specifications ....................................................................................... 365

Appendix B

Brute-Force Password Guessing Protection..................................................... 367

Example ................................................................................................................. 367

Appendix C

Setting up Your Computer’s IP Address............................................................ 369

Windows 95/98/Me................................................................................................. 369

Windows 2000/NT/XP ............................................................................................ 372

Macintosh OS 8/9................................................................................................... 376

Macintosh OS X ..................................................................................................... 378

Appendix D

IP Address Assignment Conflicts ......................................................................381

Table of Contents 21

ZyXEL G-2000 Plus v2 User’s Guide

Case A: The ZyXEL device is using the same LAN and WAN IP addresses......... 381

Case B: The ZyXEL device LAN IP address conflicts with the DHCP client IP address

381

Case C: The Subscriber IP address is the same as the IP address of a network device

382

Case D: Two or more subscribers have the same IP address. .............................. 382

Appendix E

IP Subnetting ........................................................................................................ 385

IP Addressing......................................................................................................... 385

IP Classes .............................................................................................................. 385

Subnet Masks ........................................................................................................ 386

Subnetting .............................................................................................................. 386

Example: Two Subnets .......................................................................................... 387

Example: Four Subnets.......................................................................................... 389

Example Eight Subnets.......................................................................................... 390

Subnetting With Class A and Class B Networks. ................................................... 391

Appendix F

Command Interpreter........................................................................................... 393

Command Syntax................................................................................................... 393

Command Usage ................................................................................................... 393

Appendix G

Log Descriptions.................................................................................................. 395

Log Commands...................................................................................................... 396

Log Command Example......................................................................................... 398

Appendix H

Wireless LAN and IEEE 802.11 ...........................................................................399

Benefits of a Wireless LAN .................................................................................... 399

Wireless LAN Basics.............................................................................................. 402

Fragmentation Threshold ....................................................................................... 403

IEEE 802.11 ........................................................................................................... 404

Appendix I

Wireless LAN Security......................................................................................... 405

IEEE 802.11g Wireless LAN .................................................................................. 405

IEEE 802.1x ........................................................................................................... 405

RADIUS.................................................................................................................. 406

Types of Authentication.......................................................................................... 407

WEP Authentication ............................................................................................... 408

22 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

WPA(2) ................................................................................................................... 410

Security Parameters Summary .............................................................................. 413

Appendix J

Types of EAP Authentication.............................................................................. 417

EAP-MD5 (Message-Digest Algorithm 5)............................................................... 417

EAP-TLS (Transport Layer Security)...................................................................... 417

EAP-TTLS (Tunneled Transport Layer Service) .................................................... 417

PEAP (Protected EAP)........................................................................................... 418

LEAP ...................................................................................................................... 418

Appendix K

Roaming................................................................................................................ 419

Roaming Overview................................................................................................. 419

Appendix L

Antenna Selection and Positioning Recommendation..................................... 421

Antenna Characteristics ......................................................................................... 421

Types of Antennas For WLAN................................................................................ 422

Connector Type...................................................................................................... 422

Appendix M

Triangle Route ...................................................................................................... 423

The Ideal Setup...................................................................................................... 423

The “Triangle Route” Problem................................................................................ 423

The “Triangle Route” Solutions .............................................................................. 424

IP Aliasing .............................................................................................................. 424

Gateways on the WAN Side................................................................................... 425

Table of Contents 23

ZyXEL G-2000 Plus v2 User’s Guide

24 Table of Contents

ZyXEL G-2000 Plus v2 User’s Guide

List of Figures

Figure 1 Internet Access Application ..................................................................... 44

Figure 2 Firewall Application .................................................................................. 44

Figure 3 Change Password Screen ....................................................................... 46

Figure 4 Replace Certificate Screen ...................................................................... 46

Figure 5 The MAIN MENU Screen of the Web Configurator .................................. 48

Figure 6 Enter System and Domain Names. .......................................................... 52

Figure 7 Enter Name and Select Security .............................................................. 53

Figure 8 Wireless LAN Basic Security ................................................................... 54

Figure 9 Wireless LAN Extend Security ................................................................. 55

Figure 10 LAN Setup Confirmation ........................................................................ 56

Figure 11 Ethernet Encapsulation .......................................................................... 57

Figure 12 PPPoE Encapsulation ............................................................................ 59

Figure 13 PPTP Encapsulation .............................................................................. 60

Figure 14 WAN Setup ............................................................................................ 63

Figure 15 Wizard Finish ......................................................................................... 65

Figure 16 System General Setup ........................................................................... 67

Figure 17 DDNS ..................................................................................................... 69

Figure 18 Password. .............................................................................................. 70

Figure 19 Time Setting ........................................................................................... 71

Figure 20 LAN IP .................................................................................................... 76

Figure 21 Static DHCP ........................................................................................... 79

Figure 22 IP Alias ................................................................................................... 80

Figure 23 Example of a Wireless Network ............................................................. 81

Figure 24 Wireless ................................................................................................ 85

Figure 25 Wireless: No Security ............................................................................. 87

Figure 26 Wireless: Static WEP Encryption ........................................................... 88

Figure 27 Wireless: WPA(2)-PSK .......................................................................... 90

Figure 28 Wireless: WPA(2) ................................................................................... 92

Figure 29 Wireless: WPA(2) ................................................................................... 94

Figure 30 Wireless: 802.1x .................................................................................... 96

Figure 31 MAC Address Filter ................................................................................ 98

Figure 32 Roaming ................................................................................................. 99

Figure 33 Ethernet Encapsulation .......................................................................... 102

Figure 34 Ethernet Encapsulation .......................................................................... 103

Figure 35 PPPoE Encapsulation ............................................................................ 104

Figure 36 PPTP Encapsulation .............................................................................. 106

Figure 37 WAN: IP ................................................................................................ 108

Figure 38 MAC Setup ............................................................................................. 110

List of Figures 25

ZyXEL G-2000 Plus v2 User’s Guide

Figure 39 How NAT Works ..................................................................................... 115

Figure 40 NAT Application With IP Alias ................................................................ 116

Figure 41 Multiple Servers Behind NAT Example .................................................. 119

Figure 42 SUA/NAT Setup ..................................................................................... 120

Figure 43 Address Mapping ................................................................................... 122

Figure 44 Address Mapping Edit ............................................................................ 124

Figure 45 Trigger Port Forwarding Process: Example ........................................... 126

Figure 46 Trigger Port ............................................................................................ 127

Figure 47 Example of Static Routing Topology ...................................................... 129

Figure 48 Static Route ............................................................................................ 130

Figure 49 Static Route: Edit ................................................................................... 131

Figure 50 ZyXEL device Firewall Application ......................................................... 135

Figure 51 Three-Way Handshake .......................................................................... 137

Figure 52 SYN Flood .............................................................................................. 138

Figure 53 Smurf Attack .......................................................................................... 139

Figure 54 Stateful Inspection .................................................................................. 140

Figure 55 LAN to WAN Traffic ................................................................................ 148

Figure 56 WAN to LAN Traffic ................................................................................ 149

Figure 57 Default Rule .......................................................................................... 150

Figure 58 Rule Summary ....................................................................................... 151

Figure 59 Creating/Editing A Firewall Rule ............................................................ 153

Figure 60 Creating/Editing A Custom Service ........................................................ 155

Figure 61 Rule Summary ....................................................................................... 156

Figure 62 Rule Edit Example ................................................................................. 157

Figure 63 Edit Custom Service Example ............................................................... 157

Figure 64 My Service Rule Configuration .............................................................. 158

Figure 65 My Service Example Rule Summary ..................................................... 159

Figure 66 Content Filter ......................................................................................... 164

Figure 67 Remote Management: WWW ................................................................ 169

Figure 68 Telnet Configuration on a TCP/IP Network ............................................ 170

Figure 69 Remote Management: Telnet ................................................................. 170

Figure 70 Remote Management: FTP .................................................................... 171

Figure 71 SNMP Management Model .................................................................... 172

Figure 72 Remote Management: SNMP ................................................................ 174

Figure 73 Remote Management: DNS ................................................................... 176

Figure 74 Security .................................................................................................. 177

Figure 75 Configuring UPnP .................................................................................. 180

Figure 76 ZyXEL device Authenticates Wireless Stations ..................................... 190

Figure 77 ZyXEL device Authenticates other AP’s ................................................ 190

Figure 78 Internal RADIUS Server Setting Screen ............................................... 192

Figure 79 Trusted AP Overview ............................................................................. 193

Figure 80 Trusted AP Screen ................................................................................. 194

Figure 81 Trusted Users Screen ............................................................................ 196

26 List of Figures

ZyXEL G-2000 Plus v2 User’s Guide

Figure 82 My Certificates ....................................................................................... 201

Figure 83 My Certificate Import .............................................................................. 204

Figure 84 My Certificate Create ............................................................................. 205

Figure 85 My Certificate Details ............................................................................. 208

Figure 86 Trusted CAs ........................................................................................... 211

Figure 87 Trusted CA Import .................................................................................. 212

Figure 88 Trusted CA Details ................................................................................. 214

Figure 89 View Log ................................................................................................ 217

Figure 90 Log Settings ........................................................................................... 219

Figure 91 Reports .................................................................................................. 221

Figure 92 System Status ........................................................................................ 224

Figure 93 System Status: Show Statistics .............................................................. 225

Figure 94 Maintenance DHCP Table ...................................................................... 226

Figure 95 Association List ...................................................................................... 227

Figure 96 Firmware Upload .................................................................................... 228

Figure 97 Firmware Upload In Process .................................................................. 229

Figure 98 Network Temporarily Disconnect ........................................................... 229

Figure 99 Firmware Upload Error ........................................................................... 230

Figure 100 Configuration ........................................................................................ 231

Figure 101 Configuration Upload Successful ......................................................... 232

Figure 102 Network Temporarily Disconnected ..................................................... 232

Figure 103 Configuration Upload Error .................................................................. 233

Figure 104 Reset Warning Message ...................................................................... 233

Figure 105 Restart Screen ..................................................................................... 234

Figure 106 Login Screen ........................................................................................ 235

Figure 107 Login Screen ........................................................................................ 236

Figure 108 Menu 23.1 System Security : Change Password ................................. 236

Figure 109 ZyXEL device SMT Menu Overview Example ..................................... 237

Figure 110 ZyXEL device SMT Main Menu ........................................................... 239

Figure 111 Menu 23: System Security .................................................................... 240

Figure 112 Menu 23 System Password ................................................................. 240

Figure 113 Menu 1 General Setup ......................................................................... 242

Figure 114 Menu 1.1 Configure Dynamic DNS ..................................................... 243

Figure 115 Menu 2 WAN Setup .............................................................................. 245

Figure 116 Menu 3 LAN Setup .............................................................................. 247

Figure 117 Menu 3.1 LAN Port Filter Setup. .......................................................... 247

Figure 118 Menu 3.2 TCP/IP Setup ....................................................................... 248

Figure 119 Physical Network & Partitioned Logical Networks ................................ 250

Figure 120 Menu 3.2.1: IP Alias Setup .................................................................. 251

Figure 121 Menu 3.5 Wireless LAN Setup ............................................................. 253

Figure 122 Menu 3.5 Wireless LAN Setup ............................................................ 255

Figure 123 Menu 3.5.1 WLAN MAC Address Filter ............................................... 255

Figure 124 Menu 4 Internet Access Setup ............................................................. 257

List of Figures 27

ZyXEL G-2000 Plus v2 User’s Guide

Figure 125 Internet Access Setup (PPTP) ............................................................ 259

Figure 126 Internet Access Setup (PPPoE) ........................................................... 260

Figure 127 Menu 11.1 Remote Node Profile for Ethernet Encapsulation ............... 264

Figure 128 Menu 11.1 Remote Node Profile for PPPoE Encapsulation ................. 266

Figure 129 Menu 11.1 Remote Node Profile for PPTP Encapsulation ................... 268

Figure 130 Menu 11.3 Remote Node Network Layer Options for Ethernet

Figure 131 Menu 11.5: Remote Node Filter (Ethernet Encapsulation) ................... 271

Figure 132 Menu 11.5: Remote Node Filter (PPPoE and PPTP Encapsulation) ... 271

Figure 133 Menu 12 IP Static Route Setup ........................................................... 273

Figure 134 Menu12.1 Edit IP Static Route ............................................................. 273

Figure 135 Menu 14- Dial-in User Setup ................................................................ 275

Figure 136 Menu 14.1- Edit Dial-in User ................................................................ 276

Figure 137 Menu 4 Applying NAT for Internet Access ........................................... 278

Figure 138 Menu 11.3 Applying NAT to the Remote Node .................................... 278

Figure 139 Menu 15 NAT Setup ............................................................................. 279

Figure 140 Menu 15.1 Address Mapping Sets ....................................................... 280

Figure 141 Menu 15.1.255 SUA Address Mapping Rules .................................... 280

Figure 142 Menu 15.1.1 First Set ........................................................................... 281

Figure 143 .Menu 15.1.1.1 Editing/Configuring an Individual Rule in a Set ........... 283

Figure 144 Menu 15.2.1 NAT Server Setup ........................................................... 285

Figure 145 Multiple Servers Behind NAT Example ................................................ 285

Figure 146 NAT Example 1 .................................................................................... 286

Figure 147 Menu 4 Internet Access & NAT Example ............................................ 286

Figure 148 NAT Example 2 .................................................................................... 287

Figure 149 Menu 15.2.1 Specifying an Inside Server ............................................ 287

Figure 150 NAT Example 3 .................................................................................... 288

Figure 151 NAT Example 3: Menu 11.3 ................................................................. 289

Figure 152 Example 3: Menu 15.1.1.1 .................................................................. 290

Figure 153 Example 3: Final Menu 15.1.1 ............................................................. 290

Figure 154 Example 3: Menu 15.2 ......................................................................... 291

Figure 155 NAT Example 4 .................................................................................... 291

Figure 156 Example 4: Menu 15.1.1.1 Address Mapping Rule. ............................. 292

Figure 157 Example 4: Menu 15.1.1 Address Mapping Rules ............................... 292

Figure 158 Menu 15.3 Trigger Port Setup .............................................................. 293

Figure 159 Outgoing Packet Filtering Process ....................................................... 295

Figure 160 Filter Rule Process ............................................................................... 297

Figure 161 Menu 21: Filter and Firewall Setup ...................................................... 298

Figure 162 Menu 21.1: Filter Set Configuration ..................................................... 298

Figure 163 Menu 21.1.1.1 TCP/IP Filter Rule. ....................................................... 301

Figure 164 Executing an IP Filter ........................................................................... 304

Figure 165 Menu 21.1.4.1 Generic Filter Rule ....................................................... 305

Figure 166 Telnet Filter Example ........................................................................... 307

Encapsulation ............................................................................... 269

28 List of Figures

ZyXEL G-2000 Plus v2 User’s Guide

Figure 167 Example Filter: Menu 21.1.3.1 ............................................................. 307

Figure 168 Example Filter Rules Summary: Menu 21.1.3 ..................................... 308

Figure 169 Protocol and Device Filter Sets ............................................................ 309

Figure 170 Filtering LAN Traffic ............................................................................. 310

Figure 171 Filtering Remote Node Traffic .............................................................. 310

Figure 172 Menu 21.2 Firewall Setup .................................................................... 312

Figure 173 SNMP Management Model .................................................................. 313

Figure 174 Menu 22 SNMP Configuration ............................................................ 315

Figure 175 Menu 23 System Security .................................................................... 317

Figure 176 Menu 23 System Security .................................................................... 318

Figure 177 Menu 23.2 System Security : RADIUS Server ..................................... 318

Figure 178 Menu 23 System Security .................................................................... 319

Figure 179 Menu 23.4 System Security : IEEE802.1x ........................................... 320

Figure 180 Menu 24 System Maintenance ............................................................ 323

Figure 181 Menu 24.1 System Maintenance : Status ............................................ 324

Figure 182 Menu 24.2 System Information and Console Port Speed .................... 325

Figure 183 Menu 24.2.1 System Information : Information .................................... 325

Figure 184 Menu 24.2.2 System Maintenance : Change Console Port Speed ...... 326

Figure 185 Menu 24.3 System Maintenance : Log and Trace ............................... 327

Figure 186 Menu 24.3.2 System Maintenance : UNIX Syslog .............................. 327

Figure 187 Call-Triggering Packet Example ........................................................... 331

Figure 188 LAN & WAN DHCP .............................................................................. 333

Figure 189 Menu 24.5 Backup Configuration ......................................................... 337

Figure 190 FTP Session Example ......................................................................... 338

Figure 191 Menu 24.6 Restore Configuration ........................................................ 341

Figure 192 Restore Using FTP Session Examplei ................................................. 341

Figure 193 Menu 24.7 System Maintenance: Upload Firmware ............................ 342

Figure 194 Menu 24.7.1 System Maintenance : Upload System Firmware ........... 343

Figure 195 Menu 24.7.2 System Maintenance: Upload System Configuration File 343

Figure 196 FTP Session Example ......................................................................... 344

Figure 197 Menu 24 System Maintenance ............................................................ 348

Figure 198 Valid CI Commands ............................................................................. 348

Figure 199 Menu 24.9 System Maintenance : Call Control .................................... 349

Figure 200 Budget Management ............................................................................ 349

Figure 201 Menu 24.9.2 - Call History ................................................................... 350

Figure 202 Menu 24.10 System Maintenance : Time and Date Setting ................. 352

Figure 203 Menu 24.11 – Remote Management Control ....................................... 356

Figure 204 Telnet Configuration on a TCP/IP Network .......................................... 357

Figure 205 Menu 26 Schedule Setup ..................................................................... 359

Figure 206 Menu 26.1 Schedule Set Setup .......................................................... 360

Figure 207 Applying Schedule Set(s) to a Remote Node (PPPoE) ....................... 362

Figure 208 WIndows 95/98/Me: Network: Configuration ........................................ 370

Figure 209 Windows 95/98/Me: TCP/IP Properties: IP Address ............................ 371

List of Figures 29

ZyXEL G-2000 Plus v2 User’s Guide

Figure 210 Windows 95/98/Me: TCP/IP Properties: DNS Configuration ............... 372

Figure 211 Windows XP: Start Menu ...................................................................... 373

Figure 212 Windows XP: Control Panel ................................................................. 373

Figure 213 Windows XP: Control Panel: Network Connections: Properties .......... 374

Figure 214 Windows XP: Local Area Connection Properties ................................. 374

Figure 215 Windows XP: Advanced TCP/IP Settings ............................................ 375

Figure 216 Windows XP: Internet Protocol (TCP/IP) Properties ............................ 376

Figure 217 Macintosh OS 8/9: Apple Menu ........................................................... 377

Figure 218 Macintosh OS 8/9: TCP/IP ................................................................... 377

Figure 219 Macintosh OS X: Apple Menu .............................................................. 378

Figure 220 Macintosh OS X: Network .................................................................... 379

Figure 221 IP Address Conflicts: CaseA ................................................................ 381

Figure 222 IP Address Conflicts: Case B .............................................................. 382

Figure 223 IP Address Conflicts: Case C ............................................................... 382

Figure 224 IP Address Conflicts: Case D ............................................................... 383

Figure 225 IBSS (Ad-hoc) Wireless LAN ............................................................... 400

Figure 226 Basic Service Set ................................................................................. 401

Figure 227 Extended Service Set .......................................................................... 402

Figure 228 RTS/CTS ............................................................................................. 403

Figure 229 WEP Authentication Steps ................................................................... 409

Figure 230 WPA with RADIUS Application Example .............................................. 413

Figure 231 Sequences for EAP MD5–Challenge Authentication ........................... 414

Figure 232 Sequences for PEAP, MS–CHAP V2 Authentication ........................... 415

Figure 233 Roaming Example ................................................................................ 420

Figure 234 Ideal Setup ........................................................................................... 423

Figure 235 “Triangle Route” Problem ..................................................................... 424

Figure 236 IP Alias ................................................................................................. 425

Figure 237 Gateways on the WAN Side ................................................................. 425

30 List of Figures