ZyXEL Communications AG220 802.11a/g Wireless USB Adapter User Manual ZyXEL G 220F User s Guide V1 00 Oct 2004

ZyXEL Communications Corporation 802.11a/g Wireless USB Adapter ZyXEL G 220F User s Guide V1 00 Oct 2004

User manual revised

ZyXEL AG-220802.11a/g Wireless USB AdapterUser’s GuideVersion 1.00Edition 17/2006
ZyXEL AG-220 User’s GuideCopyright 3CopyrightCopyright © 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.DisclaimerZyXEL 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.TrademarksZyNOS (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.
ZyXEL AG-220 User’s Guide4CertificationsCertificationsFederal Communications Commission (FCC) Interference StatementThe 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 device 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 device generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation.If this device does cause harmful interference to radio/television reception, which can be determined by turning the device off and on, the user is encouraged to try to correct the interference by one or more of the following measures:1Reorient or relocate the receiving antenna.2Increase the separation between the equipment and the receiver.3Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.4Consult the dealer or an experienced radio/TV technician for help.FCC Radiation Exposure Statement• This device has been tested to the FCC exposure requirements (Specific Absorption Rate). • Testing was performed on laptop computers with antennas at 0mm spacing. The maximum SAR value is: 1.420W/kg at 2.4 GHz and 0.518W/kg at 5 GHz. The device must not be collocated with any other antennas or transmitters. • This equipment has been SAR-evaluated for use in laptops (notebooks) with side slot configuration. • The device complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, under 47 CFR 2.1093 paragraph (d)(2). End users must follow the specific operating instructions for satisfying RF exposure compliance. To maintain compliance with FCC RF exposure compliance requirements, please follow operation instruction as documented in this manual. • This transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.
ZyXEL AG-220 User’s GuideCertifications 5• For operation within 5.15 ~ 5.25GHz frequency range, it is restricted to indoor environment.• IEEE 802.11b or 802.11g operation of this product in the U.S.A. is firmware-limited to channels 1 through 11. 注意 !依據 低功率電波輻射性電機管理辦法第十二條 經型式認證合格之低功率射頻電機，非經許可，公司、商號或使用者均不得擅自變更頻率、加大功率或變更原設計之特性及功能。第十四條 低功率射頻電機之使用不得影響飛航安全及干擾合法通信；經發現有干擾現象時，應立即停用，並改善至無干擾時方得繼續使用。前項合法通信，指依電信規定作業之無線電信。低功率射頻電機須忍受合法通信或工業、科學及醫療用電波輻射性電機設備之干擾。在 5250MHz~5350MHz 頻帶內操作之無線資訊傳輸設備，限於室內使用。Notices Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.This device has been designed for the WLAN 2.4 GHz and 5 GHz networks throughout the EC region and Switzerland, with restrictions in France. This device has been designed for the WLAN 2.4 GHz network throughout the EC region and Switzerland, with restrictions in France. 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.Viewing Certifications1Go to http://www.zyxel.com.2Select your product from the drop-down list box on the ZyXEL home page to go to that product's page.3Select the certification you wish to view from this page.
ZyXEL AG-220 User’s Guide6Safety WarningsSafety WarningsFor your safety, be sure to read and follow all warning notices and instructions.• Do NOT use this product near water, for example, in a wet basement or near a swimming pool.• Do NOT expose your device to dampness, dust or corrosive liquids.• Do NOT store things on the device.• Do NOT install, use, or service this device during a thunderstorm. There is a remote risk of electric shock from lightning.• Connect ONLY suitable accessories to the device.• ONLY qualified service personnel should service or disassemble this device. • Do not use the device outside, and make sure all the connections are indoors. There is a remote risk of electric shock from lightning.• Antenna Warning! This device meets ETSI and FCC certification requirements when using the included antenna(s). Only use the included antenna(s).This product is recyclable. Dispose of it properly.
ZyXEL AG-220 User’s GuideZyXEL Limited Warranty 7ZyXEL Limited WarrantyZyXEL 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.NoteRepair 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.RegistrationRegister your product online to receive e-mail notices of firmware upgrades and information at www.zyxel.com for global products, or at www.us.zyxel.com for North American products.
ZyXEL AG-220 User’s Guide8Customer SupportCustomer SupportPlease 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.METHODLOCATIONSUPPORT E-MAIL TELEPHONE WEB SITEREGULAR MAILSALES E-MAIL FAX FTP SITECORPORATE HEADQUARTERS (WORLDWIDE)support@zyxel.com.tw +886-3-578-3942 www.zyxel.comwww.europe.zyxel.comZyXEL Communications Corp.6 Innovation Road IIScience ParkHsinchu 300Ta i w a nsales@zyxel.com.tw +886-3-578-2439 ftp.zyxel.comftp.europe.zyxel.comCOSTA RICAsoporte@zyxel.co.cr +506-2017878 www.zyxel.co.cr ZyXEL Costa RicaPlaza Roble EscazúEtapa El Patio, Tercer PisoSan José, Costa Ricasales@zyxel.co.cr +506-2015098 ftp.zyxel.co.crCZECH REPUBLICinfo@cz.zyxel.com +420-241-091-350 www.zyxel.cz ZyXEL CommunicationsCzech s.r.o.Modranská 621143 01 Praha 4 - ModranyCeská Republikainfo@cz.zyxel.com +420-241-091-359DENMARKsupport@zyxel.dk +45-39-55-07-00 www.zyxel.dk ZyXEL Communications A/SColumbusvej2860 SoeborgDenmarksales@zyxel.dk +45-39-55-07-07FINLANDsupport@zyxel.fi +358-9-4780-8411 www.zyxel.fi ZyXEL Communications OyMalminkaari 1000700 HelsinkiFinlandsales@zyxel.fi +358-9-4780 8448FRANCEinfo@zyxel.fr +33-4-72-52-97-97 www.zyxel.fr ZyXEL France 1 rue des VergersBat. 1 / C69760 Limonest France+33-4-72-52-19-20GERMANYsupport@zyxel.de +49-2405-6909-0 www.zyxel.de ZyXEL Deutschland GmbH.Adenauerstr. 20/A2 D-52146WuerselenGermanysales@zyxel.de +49-2405-6909-99HUNGARYsupport@zyxel.hu +36-1-3361649 www.zyxel.hu ZyXEL Hungary48, Zoldlomb Str.H-1025, BudapestHungaryinfo@zyxel.hu +36-1-3259100KAZAKHSTANhttp://zyxel.kz/support +7-3272-590-698 www.zyxel.kz ZyXEL Kazakhstan43, Dostyk ave.,Office 414Dostyk Business Centre050010, AlmatyRepublic of Kazakhstansales@zyxel.kz +7-3272-590-689NORTH AMERICAsupport@zyxel.com 1-800-255-4101+1-714-632-0882www.us.zyxel.com ZyXEL Communications Inc.1130 N. Miller St.AnaheimCA 92806-2001U.S.A.sales@zyxel.com +1-714-632-0858 ftp.us.zyxel.com
ZyXEL AG-220 User’s GuideCustomer Support 9+” is the (prefix) number you enter to make an international telephone call.NORWAYsupport@zyxel.no +47-22-80-61-80 www.zyxel.no ZyXEL Communications A/SNils Hansens vei 130667 OsloNorwaysales@zyxel.no +47-22-80-61-81POLANDinfo@pl.zyxel.com +48 (22) 333 8250 www.pl.zyxel.com ZyXEL Communicationsul. Okrzei 1A03-715 WarszawaPoland+48 (22) 333 8251RUSSIAhttp://zyxel.ru/support +7-095-542-89-29 www.zyxel.ru ZyXEL RussiaOstrovityanova 37a Str.Moscow, 117279Russiasales@zyxel.ru +7-095-542-89-25SPAINsupport@zyxel.es +34-902-195-420 www.zyxel.es ZyXEL CommunicationsArte, 21 5ª planta28033 MadridSpainsales@zyxel.es +34-913-005-345SWEDENsupport@zyxel.se +46-31-744-7700 www.zyxel.se ZyXEL Communications A/SSjöporten 4, 41764 GöteborgSwedensales@zyxel.se +46-31-744-7701UKRAINEsupport@ua.zyxel.com +380-44-247-69-78 www.ua.zyxel.com ZyXEL Ukraine13, Pimonenko Str.Kiev, 04050Ukrainesales@ua.zyxel.com +380-44-494-49-32UNITED KINGDOMsupport@zyxel.co.uk +44-1344 30304408707 555779 (UK only) www.zyxel.co.uk ZyXEL Communications UKLtd.,11 The Courtyard,Eastern Road, Bracknell,Berkshire, RG12 2XB,United Kingdom (UK)sales@zyxel.co.uk +44-1344 303034 ftp.zyxel.co.ukMETHODLOCATIONSUPPORT E-MAIL TELEPHONE WEB SITEREGULAR MAILSALES E-MAIL FAX FTP SITE
ZyXEL AG-220 User’s Guide10 Customer Support
ZyXEL AG-220 User’s GuideTable of Contents 11Table of ContentsCopyright .................................................................................................................. 3Certifications ............................................................................................................ 4Safety Warnings ....................................................................................................... 6ZyXEL Limited Warranty.......................................................................................... 7Customer Support.................................................................................................... 8Table of Contents ................................................................................................... 11List of Figures ........................................................................................................ 15List of Tables .......................................................................................................... 17Preface .................................................................................................................... 19Chapter 1Getting Started ....................................................................................................... 211.1 About Your AG-220 ..........................................................................................211.2 Application Overview ..........................................................................................211.2.1 Station Mode .............................................................................................211.2.1.1 Infrastructure ...................................................................................211.2.1.2 Ad-Hoc ............................................................................................221.2.2 Access Point Mode ..................................................................................221.2.3 Changing AG-220 Mode ..........................................................................231.3 AG-220 Hardware and Utility Installation ...........................................................231.3.1 ZyXEL Utility Icon .....................................................................................241.4 Configuration Methods ......................................................................................241.4.1 Enabling WZC ...........................................................................................241.4.2 Accessing the ZyXEL Utility .....................................................................25Chapter 2Tutorial .................................................................................................................... 272.1 Connecting to a Wireless LAN ..........................................................................272.2 Creating and Using a Profile ..............................................................................292.3 Configuring the AG-220 as an AP ......................................................................32
ZyXEL AG-220 User’s Guide12 Table of ContentsChapter 3Wireless LAN Network ........................................................................................... 353.1 Wireless LAN Overview ....................................................................................353.2 Wireless LAN Security ......................................................................................363.2.1 Hide SSID .................................................................................................363.2.2 MAC Address Filter ...................................................................................363.2.3 User Authentication and Encryption .........................................................373.2.3.1 WEP ................................................................................................373.2.3.2 IEEE 802.1x ....................................................................................383.2.3.3 WPA and WPA2 ..............................................................................383.3 Introduction to OTIST .....................................................................................393.3.1 Enabling OTIST ........................................................................................393.3.1.1 AP ...................................................................................................393.3.1.2 Wireless Client ................................................................................403.3.2 Starting OTIST .........................................................................................403.3.3 Notes on OTIST ........................................................................................41Chapter 4Wireless Station Mode Configuration .................................................................. 434.1 Wireless Station Mode Overview ......................................................................434.1.1 ZyXEL Utility Screen Summary ...............................................................434.2 The Link Info Screen ..........................................................................................444.2.1 Trend Chart ...............................................................................................454.3 The Site Survey Screen ....................................................................................464.3.1 Security Settings ......................................................................................474.3.1.1 WEP Encryption ..............................................................................474.3.1.2 WPA-PSK/WPA2-PSK .....................................................................484.3.1.3 WPA/WPA2 .....................................................................................494.3.1.4 IEEE 802.1x ....................................................................................504.3.2 Confirm Save Screen ................................................................................514.4 The Profile Screen .............................................................................................524.4.1 Adding a New Profile ................................................................................544.5 The Advanced Screen ........................................................................................584.6 The Adapter Screen ...........................................................................................59Chapter 5Access Point Mode Configuration........................................................................ 615.1 Access Point Mode Introduction ........................................................................615.1.1 ZyXEL Utility Screen Summary ...............................................................615.1.2 Additional Setup Requirements ................................................................625.2 The Link Info Screen .........................................................................................625.3 The Configuration Screen .................................................................................635.4 The Advanced Screen ........................................................................................65
ZyXEL AG-220 User’s GuideTable of Contents 135.5 The MAC Filter Screen ......................................................................................66Chapter 6Maintenance ........................................................................................................... 696.1 The About Screen .............................................................................................696.2 Uninstalling the ZyXEL Utility ............................................................................696.3 Upgrading the ZyXEL Utility ..............................................................................70Chapter 7 Troubleshooting .................................................................................................. 717.1 Problems Starting the ZyXEL Utility ...................................................................717.2 Problem Connecting to an Access Point ............................................................717.3 Problem with the Link Quality .............................................................................727.4 Problems Communicating With Other Computers .............................................72Appendix AProduct Specifications .......................................................................................... 73Appendix BAccess Point Mode Setup Example ..................................................................... 75Appendix CManagement with Wireless Zero Configuration.................................................. 79Appendix DWireless Security ................................................................................................... 91Appendix ESetting up Your Computer’s IP Address.............................................................. 97Index...................................................................................................................... 105
ZyXEL AG-220 User’s Guide14 Table of Contents
ZyXEL AG-220 User’s GuideList of Figures 15List of FiguresFigure 1 Application: Infrastructure ....................................................................... 22Figure 2 Application: Ad-Hoc ................................................................................ 22Figure 3 Application: Access Point Mode .............................................................. 23Figure 4 ZyXEL Utility: Change Modes .................................................................. 23Figure 5 ZyXEL Utility: System Tray Icon .............................................................. 24Figure 6 Enable WZC ............................................................................................. 24Figure 7 Infrastructure Network .............................................................................. 27Figure 8 ZyXEL Utility: Site Survey ........................................................................ 28Figure 9 ZyXEL Utility: Security Settings .............................................................. 28Figure 10 ZyXEL Utility: Confirm Save ................................................................... 29Figure 11 ZyXEL Utility: Link Info .......................................................................... 29Figure 12 ZyXEL Utility: Profile .............................................................................. 30Figure 13 ZyXEL Utility: Add New Profile ............................................................... 30Figure 14 ZyXEL Utility: Profile Security ................................................................ 31Figure 15 ZyXEL Utility: Profile Encryption ............................................................ 31Figure 16 ZyXEL Utility: Profile Confirm Save ....................................................... 31Figure 17 ZyXEL Utility: Profile Activate ................................................................ 32Figure 18 ZyXEL Utility: AP: Link Info .................................................................... 33Figure 19 ZyXEL Utility: AP: Configuration ........................................................... 33Figure 20 Example of a Wireless Network ............................................................. 35Figure 21 ZyXEL Utility Menu Summary: Station Mode ........................................ 43Figure 22 Station Mode: Link Info ......................................................................... 44Figure 23 Station Mode: Link Info: Trend Chart .................................................... 45Figure 24 Station Mode: Site Survey ..................................................................... 46Figure 25 Station Mode: Security Setting: WEP ................................................... 47Figure 26 Station Mode: Security Setting: WPA-PSK/WPA2-PSK ......................... 48Figure 27 Station Mode: Security Settings: WPA/WPA2 ........................................ 49Figure 28 Station Mode: Security Setting: 802.1x ................................................. 50Figure 29 Confirm Save Screen ............................................................................ 52Figure 30 Station Mode: Profile ............................................................................ 53Figure 31 Station Mode: Profile: Add a New Profile .............................................. 54Figure 32 Station Mode: Profile: Select a Channel ............................................... 55Figure 33 Station Mode: Profile: Wireless Settings ............................................... 56Figure 34 Station Mode: Profile: Security Settings ................................................ 57Figure 35 Station Mode: Profile: Confirm New Settings ........................................ 57Figure 36 Station Mode: Profile: Activate the Profile ............................................. 58Figure 37 Station Mode: Advanced ........................................................................ 58Figure 38 Station Mode: Adapter .......................................................................... 59
ZyXEL AG-220 User’s Guide16 List of FiguresFigure 39 ZyXEL Utility Menu Summary: AP Mode .............................................. 61Figure 40 Access Point Mode: Link Info ................................................................ 62Figure 41 Access Point Mode: Configuration ........................................................ 63Figure 42 Access Point Mode: Advanced .............................................................. 66Figure 43 Access Point Mode: MAC Filter ............................................................ 67Figure 44 About ..................................................................................................... 69Figure 45 Uninstall: Confirm ................................................................................. 70Figure 46 Uninstall: Finish ..................................................................................... 70Figure 47 Windows 2000: Start ............................................................................. 75Figure 48 Windows 2000: Network and Dial-up Connections ............................... 76Figure 49 Windows 2000: Network Properties ...................................................... 76Figure 50 WIndows 2000: Network Properties: Select Network Adapter .............. 77Figure 51 Windows 2000: Local Network .............................................................. 77Figure 52 Windows XP SP2: WZC Not Available .................................................. 79Figure 53 Windows XP SP2: System Tray Icon ..................................................... 80Figure 54 Windows XP SP2: Wireless Network Connection Status ....................... 80Figure 55 Windows XP SP1: Wireless Network Connection Status ....................... 81Figure 56 Windows XP SP2: Wireless Network Connection .................................. 81Figure 57 Windows XP SP1: Wireless Network Connection Properties ................ 82Figure 58 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSK .. 83Figure 59 Windows XP SP2: Wireless Network Connection: No Security ............. 83Figure 60 Windows XP: Wireless (network) properties: Association ..................... 84Figure 61 Windows XP: Wireless (network) properties: Authentication ................. 85Figure 62 Windows XP: Protected EAP Properties ................................................ 86Figure 63 Windows XP: Smart Card or other Certificate Properties ...................... 87Figure 64 Windows XP SP2: Wireless Networks: Preferred Networks .................. 88Figure 65 Windows XP SP1: Wireless Networks: Preferred Networks .................. 89Figure 66 WPA-PSK Authentication ....................................................................... 95Figure 67 WPA(2) with RADIUS Application Example ........................................... 96Figure 68 WIndows 98/Me: Network: Configuration ............................................... 98Figure 69 Windows 98/Me: TCP/IP Properties: IP Address ................................... 99Figure 70 Windows 98/Me: TCP/IP Properties: DNS Configuration ...................... 100Figure 71 Windows XP: Start Menu ....................................................................... 101Figure 72 Windows XP: Control Panel ................................................................... 101Figure 73 Windows XP: Control Panel: Network Connections: Properties ............ 102Figure 74 Windows XP: Local Area Connection Properties ................................... 102Figure 75 Windows XP: Advanced TCP/IP Settings .............................................. 103Figure 76 Windows XP: Internet Protocol (TCP/IP) Properties .............................. 104
ZyXEL AG-220 User’s GuideList of Tables 17List of TablesTable 1 ZyXEL Utility: System Tray Icon ............................................................... 24Table 2 ZyXEL Utility Menu Summary: Station Mode ............................................ 43Table 3 Station Mode: Link Info ............................................................................. 44Table 4 Station Mode: Link Info: Trend Chart ........................................................ 45Table 5 Station Mode: Site Survey ........................................................................ 46Table 6 Station Mode: Security Setting: WEP ....................................................... 47Table 7 Station Mode: Security Setting: WPA-PSK/WPA2-PSK ............................ 49Table 8 Station Mode: Security Setting: WPA/WPA2 ............................................. 49Table 9 Station Mode: Security Settings: IEEE 802.1x .......................................... 51Table 10 Confirm Save Screen ............................................................................. 52Table 11 Station Mode: Profile ............................................................................... 53Table 12 Station Mode: Profile: Add a New Profile ................................................ 54Table 13 Station Mode: Profile: Select a Channel ................................................. 56Table 14 Station Mode: Advanced ......................................................................... 58Table 15 Station Mode: Adapter ............................................................................ 59Table 16 ZyXEL Utility Menu Summary: AP Mode ................................................ 61Table 17 Access Point Mode: Link Info ................................................................. 62Table 18 Access Point Mode: Configuration ......................................................... 64Table 19 Access Point Mode: Advanced ............................................................... 66Table 20 Access Point Mode: MAC Filter .............................................................. 67Table 21 About ...................................................................................................... 69Table 22 Troubleshooting Starting ZyXEL Utility ................................................... 71Table 23 Troubleshooting Access Point Connection Problem ............................... 71Table 24 Troubleshooting Link Quality .................................................................. 72Table 25 Troubleshooting Communication Problems ............................................ 72Table 26 Product Specifications ............................................................................ 73Table 27 Windows XP SP2: System Tray Icon ...................................................... 80Table 28 Windows XP SP2: Wireless Network Connection .................................. 82Table 29 Windows XP: Wireless Networks ........................................................... 83Table 30 Windows XP: Wireless (network) properties: Association ...................... 84Table 31 Windows XP: Wireless (network) properties: Authentication .................. 85Table 32 Windows XP: Protected EAP Properties ................................................ 86Table 33 Windows XP: Smart Card or other Certificate Properties ....................... 87Table 34 Comparison of EAP Authentication Types .............................................. 93Table 35 Wireless Security Relational Matrix ........................................................ 96
ZyXEL AG-220 User’s Guide18 List of Tables
ZyXEL AG-220 User’s GuidePreface 19PrefaceCongratulations on your purchase of the ZyXEL AG-220 802.11a/g Wireless USB Adapter. Your AG-220 plugs into a USB port on your computer and allows you to access wireless networks.Your AG-220 is easy to install and configure. About This User's GuideThis manual is designed to guide you through the configuration of your AG-220 for its various applications. Related Documentation• Supporting DiskRefer to the included CD for support documents.• Quick Start Guide The Quick Start Guide is designed to help you get up and running right away. They contain hardware installation/connection information.• ZyXEL Glossary and Web SitePlease refer to www.zyxel.com for an online glossary of networking terms and additional support documentation.User Guide Feedback Help us help you. E-mail all User’s Guide-related comments, questions or suggestions for improvement to techwriters@zyxel.com.tw or send regular mail to The Technical Writing Team, ZyXEL Communications Corp., 6 Innovation Road II, Science-Based Industrial Park, Hsinchu, 300, Taiwan. Thank you. Syntax Conventions• “Enter” means for you to type one or more characters. “Select” or “Choose” means for you to use one predefined choice.• Mouse action sequences are denoted using a comma. For example, “In Windows, click Start, Settings and then Control Panel” means first click the Start button, then point your mouse pointer to Settings and then click Control Panel.• “e.g.,” is a shorthand for “for instance”, and “i.e.,” means “that is” or “in other words”.• The ZyXEL AG-220 802.11a/g Wireless USB Adapter may be referred to as the AG-220 in this user’s guide.
ZyXEL AG-220 User’s Guide20 PrefaceGraphics Icons KeyWireless Access Point Computer Notebook Computer Server Modem or Router Wireless Signal Internet Cloud
ZyXEL AG-220 User’s GuideChapter 1 Getting Started 21CHAPTER 1Getting StartedThis chapter introduces the AG-220 and prepares you to use the ZyXEL utility.1.1 About Your AG-220 The AG-220 is an IEEE 802.11a/b/g compliant wireless LAN adapter. You can also turn your AG-220 into an access point (AP) using the ZyXEL utility. The ZyXEL utility is a tool that helps you configure your AG-220. See the appendix for detailed product specifications.1.2 Application OverviewThis section describes some network applications for the AG-220. 1.2.1 Station ModeThe AG-220 is in wireless station mode by default. When the AG-220 works as a wireless station (wireless client), you can either set the network type to Infrastructure and connect to an AP or use Ad-Hoc mode and connect to a peer computer (another wireless device in Ad-Hoc mode).1.2.1.1 Infrastructure To connect to a network via an access point (AP), set the AG-220 network type to Infrastructure. Through the AP, you can access the Internet or the wired network behind the AP.
ZyXEL AG-220 User’s Guide22 Chapter 1 Getting StartedFigure 1 Application: Infrastructure 1.2.1.2 Ad-Hoc To set up a small independent wireless workgroup without an AP, use Ad-Hoc.Ad-Hoc does not require an AP or a wired network. Two or more wireless clients communicate directly with each other. Figure 2 Application: Ad-Hoc 1.2.2 Access Point Mode You can also set the AG-220 to access point mode. This allows you to set up your wireless networks without using a dedicated AP. The following figure shows a network example.
ZyXEL AG-220 User’s GuideChapter 1 Getting Started 23Figure 3 Application: Access Point Mode In the example, the AG-220 is installed on computer A and set to operate in access point mode. Computer A provides an Internet connection to the wireless LAN, so wireless stations B and C can access the Internet.1.2.3 Changing AG-220 Mode To change between the modes, select either Station Mode or AP Mode in any ZyXEL utility screens.Figure 4 ZyXEL Utility: Change ModesNote: Wait for about five seconds for the ZyXEL utility to complete the mode change. The current mode is indicated by the color of the check box.1.3 AG-220 Hardware and Utility InstallationFollow the instructions in the Quick Start Guide to install the ZyXEL utility and make hardware connections.
ZyXEL AG-220 User’s Guide24 Chapter 1 Getting Started1.3.1 ZyXEL Utility IconAfter you install and start the ZyXEL utility, an icon for the ZyXEL utility appears in the system tray.Note: The ZyXEL utility system tray icon displays only when the AG-220 is installed properly.When you use the ZyXEL utility, it automatically disables Wireless Zero Configuration (WZC).Figure 5 ZyXEL Utility: System Tray Icon The color of the ZyXEL utility system tray icon indicates the status of the AG-220. Refer to the following table for details. 1.4 Configuration Methods To configure your AG-220, use one of the following applications:• Wireless Zero Configuration (WZC) (the Windows XP wireless configuration tool)• ZyXEL Utility (required when you want to use the AG-220 as an access point)Note: Do NOT use WZC at the same time you use the ZyXEL utility.1.4.1 Enabling WZC Note: When you use the ZyXEL utility, it automatically disables WZC. If you want to use WZC to configure the AG-220, you need to disable the ZyXEL utility by right-clicking the utility icon ( ) in the system tray and selecting Exit. Figure 6 Enable WZCTable 1 ZyXEL Utility: System Tray Icon COLOR DESCRIPTIONRed The AG-220 is operating in wireless station mode but is not connected to a wireless network.Green The AG-220 is operating in wireless station mode and is connected to a wireless network.Pale Blue The AG-220 is operating in access point mode.
ZyXEL AG-220 User’s GuideChapter 1 Getting Started 25Refer to the appendices for information on how to use WZC to manage the AG-220.To reactivate the ZyXEL utility, double-click the ( ) icon on your desktop or click Start, (All) Programs, ZyXEL AG-220 Wireless Adapter Utility, ZyXEL AG-220 Wireless Adapter Software.1.4.2 Accessing the ZyXEL Utility Double-click on the ZyXEL wireless LAN utility icon in the system tray to open the ZyXEL utility. The ZyXEL utility screens are similar in all Microsoft Windows versions. Screens for Windows XP are shown in this User’s Guide. Note: Click the icon (located in the top right corner) to display the online help window.
ZyXEL AG-220 User’s Guide26 Chapter 1 Getting Started
ZyXEL AG-220 User’s GuideChapter 2 Tutorial 27CHAPTER 2TutorialThe following sections show you how to join a wireless network using the ZyXEL utility, as in the following diagrams. The wireless client is labeled C and the access point is labeled AP. Figure 7 Infrastructure NetworkThere are three ways to connect the wireless client (the AG-220 in station mode) to a network.• Configure nothing and leave the wireless client to automatically scan for and connect to any available network that has no wireless security configured.• Manually connect to a network (see Section 2.1 on page 27).• Configure a profile to have the wireless client automatically connect to a specific network or peer computer (see Section 2.2 on page 29). This chapter also includes a simple example of how to configure the AG-220 as an AP using the ZyXEL utility. See Section 2.3 on page 32 for more information.2.1 Connecting to a Wireless LAN This example illustrates how to manually connect your wireless client to an access point (AP) configured for WPA-PSK security and connected to the Internet. Before you connect to the access point, you must know its Service Set IDentity (SSID) and WPA-PSK pre-shared key. In this example, the AP’s SSID is “SSID_Example3” and its pre-shared key is “ThisismyWPA-PSKpre-sharedkey”. After you install the ZyXEL utility and then insert the wireless client, follow the steps below to connect to a network using the Site Survey screen. 1Open the ZyXEL utility and click the Site Survey tab to open the screen shown next.
ZyXEL AG-220 User’s Guide28 Chapter 2 TutorialFigure 8 ZyXEL Utility: Site Survey2The wireless client automatically searches for available wireless networks. Click Scan if you want to search again. If no entry displays in the Available Network List, that means there is no wireless network available within range. Make sure the AP or peer computer is turned on, or move the wireless client closer to the AP or peer computer. See Table 5 on page 46 for detailed field descriptions.3To connect to an AP or peer computer, either click an entry in the list and then click Connect or double-click an entry (SSID_Example3 in this example). 4When you try to connect to an AP with security configured, a window will pop up prompting you to specify the security settings. Enter the pre-shared key and leave the encryption type at the default setting.Use the Next button to move on to the next screen. You can use the Back button at any time to return to the previous screen, or the Exit button to return to the Site Survey screen.Figure 9 ZyXEL Utility: Security Settings 5The Confirm Save window appears. Check your settings and click Save to continue.
ZyXEL AG-220 User’s GuideChapter 2 Tutorial 29Figure 10 ZyXEL Utility: Confirm Save6The ZyXEL utility returns to the Link Info screen while it connects to the wireless network using your settings. When the wireless link is established, the ZyXEL utility icon in the system tray turns green and the Link Info screen displays details of the active connection. Check the network information in the Link Info screen to verify that you have successfully connected to the selected network. If the wireless client is not connected to a network, the fields in this screen remain blank. See Table 3 on page 44 for detailed field descriptions.Figure 11 ZyXEL Utility: Link Info 7Open your Internet browser and enter http://www.zyxel.com or the URL of any other web site in the address bar. If you are able to access the web site, your wireless connection is successfully configured. If you cannot access the web site, check the Troubleshooting section of this User's Guide or contact your network administrator if necessary.2.2 Creating and Using a ProfileA profile lets you automatically connect to the same wireless network every time you use the ZyXEL utility. You can also configure different profiles for different networks, for example if you connect a notebook computer to wireless networks at home and at work.
ZyXEL AG-220 User’s Guide30 Chapter 2 TutorialThis example illustrates how to set up a profile and connect the wireless client to an access point configured for WPA-PSK security. In this example, the AP’s SSID is “SSID_Example3” and its pre-shared key is “ThisismyWPA-PSKpre-sharedkey”. You have chosen the profile name “PN_Example3”.1Open the ZyXEL utility and click the Profile tab to open the screen as shown. Click Add to configure a new profile.Figure 12 ZyXEL Utility: Profile2The Add New Profile screen appears. The wireless client automatically searches for available wireless networks, which are displayed in the Scan Info box. You can also configure your profile for a wireless network that is not in the list. Figure 13 ZyXEL Utility: Add New Profile3Give the profile a descriptive name (of up to 32 printable ASCII characters). Select Infrastructure and either manually enter or select the AP's SSID in the Scan Info table and click Select.4Choose the same encryption method as the AP to which you want to connect (In this example, WPA-PSK).
ZyXEL AG-220 User’s GuideChapter 2 Tutorial 31Figure 14 ZyXEL Utility: Profile Security5This screen varies depending on the encryption method you selected in the previous screen. In this example, enter the pre-shared key and leave the encryption type at the default setting.Figure 15 ZyXEL Utility: Profile Encryption6Verify the profile settings in the ready-only screen. Click Save to save and go to the next screen. Figure 16 ZyXEL Utility: Profile Confirm Save7Click Activate Now to use the new profile immediately. Otherwise, click the Activate Later button to go back to the Profile List screen. If you clicked Activate Later you can select the profile from the list in the Profile screen and click Connect to activate it.
ZyXEL AG-220 User’s Guide32 Chapter 2 TutorialNote: Only one profile can be activated and used at any given time.Figure 17 ZyXEL Utility: Profile Activate8When you activate the new profile, the ZyXEL utility goes to the Link Info screen while it connects to the AP using your settings. When the wireless link is established, the ZyXEL utility icon in the system tray turns green and the Link Info screen displays details of the active connection. 9Make sure the selected AP in the active profile is on and connected to the Internet. Open your Internet browser, enter http://www.zyxel.com or the URL of any other web site in the address bar and press ENTER. If you are able to access the web site, your new profile is successfully configured. 10If you cannot access the Internet, go back to the Profile screen. Select the profile you are using and click Edit. Check the details you entered previously. Also, refer to the Troubleshooting section of this User's Guide or contact your network administrator if necessary.2.3 Configuring the AG-220 as an APIn access point mode, your AG-220 allows you to set up your wireless network without using a dedicated AP. Refer to Section 1.2.3 on page 23 and Chapter 5 on page 61 for more information.Note: With WZC, you cannot use the AG-220 as an access point.After you install the ZyXEL utility and then insert the AG-220, follow the steps below to set up your AG-220 as an AP. 1Select AP Mode in any utility screen and wait for five seconds. The screen changes and displays as shown next. Under Status, you can view the current settings on the AG-220. In the Association List, you can see if any wireless clients have connected to your AG-220.
ZyXEL AG-220 User’s GuideChapter 2 Tutorial 33Figure 18 ZyXEL Utility: AP: Link Info2If you want to change the SSID and enable wireless security for your AG-220, click the Configuration tab and refer to Section 5.3 on page 63 for detailed field descriptions.Note: Only WEP security is available when the AG-220 is in AP modeFigure 19 ZyXEL Utility: AP: Configuration
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ZyXEL AG-220 User’s GuideChapter 3 Wireless LAN Network 35CHAPTER 3Wireless LAN NetworkThis chapter provides background information on wireless LAN networks.3.1 Wireless LAN Overview The following figure provides an example of a wireless network with an AP. See Figure 2 on page 22 for an Ad Hoc network example.Figure 20 Example of a Wireless NetworkThe wireless network is the part in the blue circle. In this wireless network, devices A and B are called wireless clients. The wireless clients use the access point (AP) to interact with other devices (such as the printer) or with the InternetEvery wireless network must follow these basic guidelines.• Every device in the same wireless network must use the same SSID.The SSID is the name of the wireless network. It stands for Service Set IDentity.• If two wireless networks overlap, they should use a different channel.Like radio stations or television channels, each wireless network uses a specific channel, or frequency, to send and receive information.
ZyXEL AG-220 User’s Guide36 Chapter 3 Wireless LAN Network• Every device in the same wireless network must use security compatible with the AP or peer computer.Security stops unauthorized devices from using the wireless network. It can also protect the information that is sent in the wireless network.3.2 Wireless LAN Security Wireless LAN security is vital to your network to protect wireless communications.Configure the wireless LAN security using the Configuration or the Profile Security Setting screen. If you do not enable any wireless security on your AG-220, the AG-220’s wireless communications are accessible to any wireless networking device that is in the coverage area. Note: You can only use WEP encryption if you set the AG-220 to Ad-hoc or AP mode.See the appendices for more detailed information about wireless security.3.2.1 Hide SSIDNormally, the AG-220 in AP mode acts like a beacon and regularly broadcasts the SSID in the area. You can hide the SSID instead, in which case the AG-220 in AP mode does not broadcast the SSID. In addition, you should change the default SSID to something that is difficult to guess.This type of security is fairly weak, however, because there are ways for unauthorized wireless devices to get the SSID. In addition, unauthorized wireless devices can still see the information that is sent in the wireless network.3.2.2 MAC Address FilterEvery device that can use a wireless network has a unique identification number, called a MAC address.1 A MAC address is usually written using twelve hexadecimal characters2; for example, 00A0C5000002 or 00:A0:C5:00:00:02. To get the MAC address for each device in the wireless network, see the device’s User’s Guide or other documentation. You can find the MAC address of the AG-220 by looking at the sticker on the bottom of the device. Alternatively, use the utility in AP mode and look at the Link Info screen. See Section 5.2 on page 62 for more details. You can also use the Association List in the Link Info screen (in AP mode) to get the MAC addresses of other wireless devices connected to the AG-220.1. Some wireless devices, such as scanners, can detect wireless networks but cannot use wireless networks. These kinds of wireless devices might not have MAC addresses.2. Hexadecimal characters are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, A, B, C, D, E, and F.
ZyXEL AG-220 User’s GuideChapter 3 Wireless LAN Network 37You can use the MAC address filter to tell the AG-220 in AP mode which devices are allowed or not allowed to use the wireless network. If a device is allowed to use the wireless network, it still has to have the correct information (SSID, channel, and security). If a device is not allowed to use the wireless network, it does not matter if it has the correct information.This type of security does not protect the information that is sent in the wireless network. Furthermore, there are ways for unauthorized wireless devices to get the MAC address of an authorized device. Then, they can use that MAC address to access the wireless network.3.2.3 User Authentication and EncryptionYou can make every user log in to the wireless network before they can use it. This is called user authentication. However, every wireless client in the wireless network has to support IEEE 802.1x to do this.Wireless networks can use encryption to protect the information that is sent in the wireless network. Encryption is like a secret code. If you do not know the secret code, you cannot understand the message.3.2.3.1 WEP3.2.3.1.1 Data Encryption WEP (Wired Equivalent Privacy) encryption scrambles all data packets transmitted between the AG-220 and the AP or other wireless stations to keep network communications private. Both the wireless stations and the access points must use the same WEP key for data encryption and decryption.There are two ways to create WEP keys in your AG-220.• Automatic WEP key generation based on a “password phrase” called a passphrase. The passphrase is case sensitive. You must use the same passphrase for all WLAN adapters with this feature in the same WLAN.For WLAN adapters without the passphrase feature, you can still take advantage of this feature by writing down the four automatically generated WEP keys from the Security Settings screen of the ZyXEL utility and entering them manually as the WEP keys in the other WLAN adapter(s).• Enter the WEP keys manually.Your AG-220 allows you to configure up to four 64-bit, 128-bit or 256-bit WEP keys and only one key is used as the default key at any one time.3.2.3.1.2 Authentication Type The IEEE 802.11b/g standard describes a simple authentication method between the wireless stations and AP. Three authentication types are defined: Auto, Open System and Shared Key.
ZyXEL AG-220 User’s Guide38 Chapter 3 Wireless LAN Network• Open System mode is implemented for ease-of-use and when security is not an issue. The wireless station and the AP or peer computer do not share a secret key. Thus the wireless stations can associate with any AP or peer computer and listen to any transmitted data that is not encrypted.• Shared Key mode involves a shared secret key to authenticate the wireless station to the AP or peer computer. This requires you to enable the wireless LAN security and use same settings on both the wireless station and the AP or peer computer.• Auto authentication mode allows the AG-220 to switch between the open system and shared key modes automatically. Use the auto mode if you do not know the authentication mode of the other wireless stations.3.2.3.2 IEEE 802.1x The IEEE 802.1x standard outlines enhanced security methods for both the authentication of wireless stations and encryption key management. Authentication can be done using an external RADIUS server.3.2.3.2.1 EAP Authentication EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the IEEE 802.1x transport mechanism in order to support multiple types of user authentication. By using EAP to interact with an EAP-compatible RADIUS server, an access point helps a wireless station and a RADIUS server perform authentication. The type of authentication you use depends on the RADIUS server and an intermediary AP(s) that supports IEEE 802.1x. The AG-220 supports EAP-TLS, EAP-TTLS and EAP-PEAP. Refer to Appendix D on page 91 for descriptions.For EAP-TLS authentication type, you must first have a wired connection to the network and obtain the certificate(s) from a certificate authority (CA). Certificates (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the identity of each certificate owner.3.2.3.3 WPA and WPA2 Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2 (IEEE 802.11i) is a wireless security standard that defines stronger encryption, authentication and key management than WPA. Key differences between WPA(2) and WEP are improved data encryption and user authentication.Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol (TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA and WPA2 use Advanced Encryption Standard (AES) in the Counter mode with Cipher block chaining Message authentication code Protocol (CCMP) to offer stronger encryption than TKIP.
ZyXEL AG-220 User’s GuideChapter 3 Wireless LAN Network 39If both an AP and the wireless clients support WPA2 and you have an external RADIUS server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server, you should use WPA2-PSK (WPA2-Pre-Shared Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a wireless client will be granted access to a WLAN. If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending on whether you have an external RADIUS server or not.Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is less secure than WPA or WPA2.3.3 Introduction to OTIST In a wireless network, the wireless clients must have the same SSID and security settings as the access point (AP) or wireless router (we will refer to both as “AP” here) in order to associate with it. Traditionally this meant that you had to configure the settings on the AP and then manually configure the exact same settings on each wireless client.OTIST (One-Touch Intelligent Security Technology) allows you to transfer your AP’s SSID and WEP or WPA-PSK security settings to wireless clients that support OTIST and are within transmission range. You can also choose to have OTIST generate a WPA-PSK key for you if you didn’t configure one manually.3.3.1 Enabling OTISTYou must enable OTIST on both the AP and wireless client before you start transferring settings.We use the P-334U in this guide as the example AP. Screens may vary slightly for your ZyXEL devices.Note: The AP and wireless client(s) MUST use the same Setup key.3.3.1.1 APOn the P-334U, you can enable OTIST using the OTIST button or the web configurator. If you use the OTIST button, the default (01234567) or previous saved (through the web configurator) Setup key is used to encrypt the settings that you want to transfer.Hold in the OTIST button for about two seconds.
ZyXEL AG-220 User’s Guide40 Chapter 3 Wireless LAN NetworkIn the web configurator, go to the Wireless LAN main screen and then select OTIST. To change the Setup key, enter zero to eight printable characters. To have OTIST automatically generate a WPA-PSK key, select the Yes! check box. If you manually configured a WEP key or a WPA-PSK key and you also selected this check box, then the key you manually configured is used. 3.3.1.2 Wireless ClientStart the ZyXEL utility and click the Adapter tab. Select the OTIST check box, enter the same Setup Key as your AP and click Save.3.3.2 Starting OTIST Note: You must click Start in the AP OTIST web configurator screen and in the wireless client(s) Adapter screen all within three minutes (at the time of writing). You can start OTIST in the wireless clients and AP in any order but they must all be within range and have OTIST enabled.
ZyXEL AG-220 User’s GuideChapter 3 Wireless LAN Network 41 3.3.3 Notes on OTIST1If you enabled OTIST in the wireless client, you see this screen each time you start the utility. Click Ye s for it to search for an OTIST-enabled AP.2If an OTIST-enabled wireless client loses its wireless connection for more than ten seconds, it will search for an OTIST-enabled AP for up to one minute. (If you manually have the wireless client search for an OTIST-enabled AP, there is no timeout; click Cancel in the OTIST progress screen to stop the search.)3When the wireless client finds an OTIST-enabled AP, you must still click Start in the AP OTIST web configurator screen or hold in the Reset button (for one or two seconds) for the AP to transfer settings.4If you change the SSID or the keys on the AP after using OTIST, you need to run OTIST again or enter them manually in the wireless client(s).1In the AP, a web configurator screen pops up showing you the security settings to transfer. After reviewing the settings, click OK.2This screen appears while OTIST settings are being transferred. It closes when the transfer is complete. • In the wireless client, you see this screen if it can't find an OTIST-enabled AP (with the same Setup key). Click OK to go back to the ZyXEL utility main screen.• If there is more than one OTIST-enabled AP within range, you see a screen asking you to select one AP to get settings from.
ZyXEL AG-220 User’s Guide42 Chapter 3 Wireless LAN Network5If you configure OTIST to generate a WPA-PSK key, this key changes each time you run OTIST. Therefore, if a new wireless client joins your wireless network, you need to run OTIST on the AP and ALL the wireless clients again.
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 43CHAPTER 4Wireless Station ModeConfigurationThis chapter shows you how to configure your AG-220 in wireless station mode. See Chapter 5 on page 61 for how to configure the AG-220 in access point mode.4.1 Wireless Station Mode Overview To set your AG-220 to wireless station mode, select Station Mode in any utility screen (refer to Section 1.2.3 on page 23). 4.1.1 ZyXEL Utility Screen Summary This section describes the ZyXEL utility screens when the AG-220 is in station mode. Figure 21 ZyXEL Utility Menu Summary: Station Mode The following table describes the menus. Table 2 ZyXEL Utility Menu Summary: Station ModeTAB DESCRIPTIONStation ModeLink Info Use this screen to see your current connection status, configuration and data rate statistics.Site Survey Use this screen to • scan for a wireless network• configure wireless security (if activated on the selected network).• connect to a wireless network.Profile Use this screen to add, delete, edit or activate a profile with a set of wireless and security settings.Advanced Use this screen to change the wireless network mode.Adapter Use this screen to configure a transfer rate, enable power saving and use OTIST (One-Touch Intelligent Security Technology).
ZyXEL AG-220 User’s Guide44 Chapter 4 Wireless Station Mode Configuration4.2 The Link Info Screen When the ZyXEL utility starts, the Link Info screen displays, showing the current configuration and connection status of your AG-220.Figure 22 Station Mode: Link Info The following table describes the labels in this screen. Table 3 Station Mode: Link Info LABEL DESCRIPTIONAP ModeStation ModeUse the check box to set the AG-220 to operate in wireless station or access point mode. Refer to Section 1.2.3 on page 23 for more information.Wireless Network StatusProfile Name This is the name of the profile you are currently using.Network Name (SSID)The SSID identifies the wireless network to which a wireless station is associated. This field displays the name of the wireless device to which the AG-220 is associated.AP MAC Address This field displays the MAC address of the AP or peer computer to which the AG-220 is associated.Network Type This field displays the network type (Infrastructure or Ad-Hoc) of the wireless network.Transmission Rate This field displays the current transmission rate of the AG-220 in megabits per second (Mbps).Security This field displays whether data encryption is activated (WEP (WEP or 802.1x), TKIP (WPA/WPA-PSK/WPA2/WPA2-PSK), AES (WPA/WPA-PSK/WPA2/WPA2-PSK)) or inactive (DISABLE).Channel This field displays the radio channel the AG-220 is currently using.StatisticsTransmit Rate This field displays the current data transmission rate in kilobits per second (Kbps).Receive Rate This field displays the current data receiving rate in kilobits per second (Kbps).
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 454.2.1 Trend Chart Click Trend Chart in the Link Info screen to display a screen as shown below. Use this screen to view real-time data traffic statistics.Figure 23 Station Mode: Link Info: Trend Chart The following table describes the labels in this screen. Authentication This field displays the authentication method of the AG-220.Network Mode This field displays the wireless standard (A, B or G) of the AP or peer computer. Total Transmit This field displays the total number of data frames transmitted.Total Receive This field displays the total number of data frames received.Link Quality This field displays the signal strength of the AG-220.Trend Chart Click this button to display the real-time statistics of the data rate in kilobits per second (Kbps).Signal Strength The status bar shows the strength of the signal. The signal strength mainly depends on the antenna output power and the distance between your AG-220 and the AP or peer computer.Link Quality The status bar shows the quality of wireless connection. This refers to the percentage of packets transmitted successfully. If there are too many wireless stations in a wireless network, collisions may occur which could result in a loss of messages even though you have high signal strength.Table 3 Station Mode: Link Info (continued)LABEL DESCRIPTIONTable 4 Station Mode: Link Info: Trend Chart LABEL DESCRIPTIONTransmit This field displays the current data transmission rate in kilobits per second (Kbps).Receive This field displays the current data receiving rate in kilobits per second (Kbps).
ZyXEL AG-220 User’s Guide46 Chapter 4 Wireless Station Mode Configuration4.3 The Site Survey Screen Use the Site Survey screen to scan for and connect to a wireless network automatically.Figure 24 Station Mode: Site Survey The following table describes the labels in this screen. Table 5 Station Mode: Site Survey LABEL DESCRIPTIONAvailable Network ListClick a column heading to sort the entries.,, ordenotes that the wireless device is in infrastructure mode and the wireless security is activated.denotes that the wireless device is in infrastructure mode but the wireless security is deactivated.denotes that the wireless device is in Ad-Hoc mode and the wireless security is activated.denotes that the wireless device is in Ad-Hoc mode but the wireless security is deactivated.SSID This field displays the SSID (Service Set IDentifier) of each wireless device.Channel This field displays the channel number used by each wireless device.Signal This field displays the signal strength of each wireless device.Scan Click Scan to search for available wireless devices within transmission range.Connect Click Connect to associate to the selected wireless device.Site Information Click an entry in the Available Network List table to display the information of the selected wireless device.Network Type This field displays the network type (Infrastructure or Ad Hoc) of the wireless device.Channel This field displays the channel number used by each wireless device.Encryption This field shows whether data encryption is activated (WEP (WEP or 802.1x), WPA, WPA-PSK, WPA2, WPA2-PSK) or inactive (DISABLE).
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 474.3.1 Security Settings When you configure the AG-220 to connect to a network with wireless security activated and the security settings are disabled on the AG-220, the screen varies according to the encryption method used by the selected network.4.3.1.1 WEP EncryptionFigure 25 Station Mode: Security Setting: WEP The following table describes the labels in this screen. MAC address This field displays the MAC address of the wireless device.Surveyed at This field displays the time when the wireless device was scanned.Table 5 Station Mode: Site Survey (continued)LABEL DESCRIPTIONTable 6 Station Mode: Security Setting: WEP LABEL DESCRIPTIONSecurity SettingsWEP Select 64 Bits, 128 Bits or 256 Bits to activate WEP encryption and then fill in the related fields.Encryption Type Select an authentication method. Choices are SHARED and OPEN.Refer to Section 3.2.3.1.2 on page 37 for more information.Pass Phrase Enter a passphrase of up to 63 case-sensitive printable characters. As you enter the passphrase, the AG-220 automatically generates four different WEP keys and displays it in the key field below. Refer to Section 3.2.3.1.1 on page 37 for more information.At the time of writing, you cannot use the passphrase function to generate 256-bit WEP keys.Transmit Key Select a default WEP key to use for data encryption. The key displays in the field below.
ZyXEL AG-220 User’s Guide48 Chapter 4 Wireless Station Mode Configuration4.3.1.2 WPA-PSK/WPA2-PSKFigure 26 Station Mode: Security Setting: WPA-PSK/WPA2-PSKKey x (where x is a number between 1 and 4)Select this option if you want to manually enter the WEP keys. Enter the WEP key in the field provided.If you select 64 Bits in the WEP field.Enter either 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for example, 11AA22BB33) for HEX key type.orEnter 5 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (for example, MyKey) for ASCII key type. If you select 128 Bits in the WEP field,Enter either 26 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for example, 00112233445566778899AABBCC) for HEX key typeorEnter 13 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (for example, MyKey12345678) for ASCII key type.If you select 256 Bits in the WEP field, Enter either 58 hexadecimal digits in the range of "A-F", "a-f" and "0-9" (for example, 0000111122223333444455556666777788889999AAAABBBBCCCC000011) for HEX key type or Enter 29 ASCII characters (case sensitive) ranging from "a-z", "A-Z" and "0-9" (for example, MyKey111122223333444455556678) for ASCII key type.Note: The values for the WEP keys must be set up exactly the same on all wireless devices in the same wireless LAN.ASCII WEP keys are case sensitive.Back Click Back to go to the Site Survey screen to select and connect to another network.Next Click Next to confirm your selections and advance to the Confirm Save screen. Refer to Section 4.3.2 on page 51. Exit Click Exit to return to the Site Survey screen without saving.Table 6 Station Mode: Security Setting: WEP (continued)LABEL DESCRIPTION
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 49The following table describes the labels in this screen. 4.3.1.3 WPA/WPA2Figure 27 Station Mode: Security Settings: WPA/WPA2The following table describes the labels in this screen. Table 7 Station Mode: Security Setting: WPA-PSK/WPA2-PSKLABEL DESCRIPTIONEncryption Type The encryption mechanisms used for WPA/WPA2 and WPA-PSK/WPA2-PSK are the same. The only difference between the two is that WPA-PSK/WPA2-PSK uses a simple common password, instead of user-specific credentials.Select the encryption type (TKIP or AES) for data encryption.Refer to Section 3.2.3.3 on page 38 for more information.Pre-Shared Key Type a pre-shared key (same as the AP or peer device) of between 8 and 63 case-sensitive ASCII characters (including spaces and symbols) or 64 hexadecimal characters.Back Click Back to go to the Site Survey screen to select and connect to another network.Next Click Next to confirm your selections and advance to the Confirm Save screen. Refer to Section 4.3.2 on page 51. Exit Click Exit to return to the Site Survey screen without saving.Table 8 Station Mode: Security Setting: WPA/WPA2LABEL DESCRIPTIONEncryption Type The encryption mechanisms used for WPA/WPA2 and WPA-PSK/WPA2-PSK are the same. The only difference between the two is that WPA-PSK/WPA2-PSK uses a simple common password, instead of user-specific credentials.Select the encryption type (TKIP or AES) for data encryption.Refer to Section 3.2.3.3 on page 38 for more information.Authentication TypeThe type of authentication you use depends on the RADIUS server or AP.Select an authentication method from the drop down list. Options are TLS and PEAP.Login Name Enter a user name. This is the user name that you or an administrator set up on a RADIUS server.
ZyXEL AG-220 User’s Guide50 Chapter 4 Wireless Station Mode Configuration4.3.1.4 IEEE 802.1xConfigure IEEE 802.1x security with various authentication methods in this screen. Figure 28 Station Mode: Security Setting: 802.1x Password This field is not available when you select TLS in the Authentication Type field. Enter the password associated with the user name above. Certificate This field is only available when you select TLS in the Authentication Type field. Click Browse to select a certificate.Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information.Validate Server CertificateSelect the check box to check the certificate of the authentication server.PEAP Inner EAP This field is only available when you select PEAP in the Authentication Type field.The PEAP method used by the RADIUS server or AP for client authentication is MS CHAP v2.Back Click Back to go to the Site Survey screen to select and connect to another network.Next Click Next to confirm your selections and advance to the Confirm Save screen. Refer to Section 4.3.2 on page 51. Exit Click Exit to return to the Site Survey screen without saving.Table 8 Station Mode: Security Setting: WPA/WPA2LABEL DESCRIPTION
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 51The following table describes the labels in this screen. 4.3.2 Confirm Save ScreenUse this screen to confirm and save the security settings.Table 9 Station Mode: Security Settings: IEEE 802.1xLABEL DESCRIPTIONAuthentication TypeThe type of authentication you use depends on the RADIUS server or AP.Select an authentication method from the drop down list. Options are TLS and PEAP.Login Name Enter a user name. This is the user name that you or an administrator set up on a RADIUS server.Password This field is not available when you select TLS in the Authentication Type field. Enter the password associated with the user name above. Certificate This field is only available when you select TLS in the Authentication Type field. Click Browse to select a certificate.Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information.Validate Server CertificateSelect the check box to check the certificate of the authentication server.PEAP Inner EAP This field is only available when you select PEAP in the Authentication Type field.The PEAP method used by the RADIUS server or AP for client authentication is MS CHAP v2.Back Click Back to go to the Site Survey screen to select and connect to another network.Next Click Next to confirm your selections and advance to the Confirm Save screen. Refer to Section 4.3.2 on page 51. Exit Click Exit to return to the Site Survey screen without saving.
ZyXEL AG-220 User’s Guide52 Chapter 4 Wireless Station Mode ConfigurationFigure 29 Confirm Save Screen The following table describes the labels in this screen. 4.4 The Profile Screen A profile is a set of wireless parameters that you need to connect to a wireless network. With a profile activated, each time you start the AG-220, it automatically scans for the specific SSID and joins that network with the pre-defined wireless security settings. If the specified network is not available, the AG-220 cannot connect to a network.If you do not configure and activate a profile, each time you start the AG-220, the AG-220 uses the default profile to connect to any available network that has no security enabled. The default profile is a profile that allows you to connect to any SSID that has no security enabled. Table 10 Confirm Save ScreenLABEL DESCRIPTIONSecurity SettingNetwork Name This field displays the SSID previously entered.Network Type This field displays the network type (Infrastructure or Ad-Hoc) of the wireless device.Channel This field displays the channel number used by the profile.Security This field shows whether data encryption is activated (WEP (WEP or 802.1x), WPA, WPA-PSK, WPA2, WPA2-PSK) or inactive (DISABLE).Back Click Back to return to the previous screen.Save Click Save to save the changes back to the AG-220 and display the Link Info screen. Exit Click Exit to discard changes and return to the Site Survey screen.
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 53Click the Profile tab in the ZyXEL utility program to display the Profile screen as shown next.The profile function allows you to save the wireless network settings in this screen, or use one of the pre-configured network profiles.Figure 30 Station Mode: Profile The following table describes the labels in this screen. Table 11 Station Mode: Profile LABEL DESCRIPTIONProfile List Click a column heading to sort the entries.,, ordenotes that the wireless device is in infrastructure mode and the wireless security is activated.denotes that the wireless device is in infrastructure mode but the wireless security is deactivated.denotes that the wireless device is in Ad-Hoc mode and the wireless security is activated.denotes that the wireless device is in Ad-Hoc mode but the wireless security is deactivated.Profile Name This is the name of the pre-configured profile.SSID This is the SSID of the wireless network to which the selected profile associate.Connect To use and activate a previously saved network profile, select a pre-configured profile name in the table and click Connect.Add To add a new profile into the table, click Add.Delete To delete an existing wireless network configuration, select a profile in the table and click Delete.Edit To edit an existing wireless network configuration, select a profile in the table and click Edit.Profile Info The following fields display detailed information of the selected profile in the Profile List table.Network Type This field displays the network type (Infrastructure or Ad-Hoc) of the profile.
ZyXEL AG-220 User’s Guide54 Chapter 4 Wireless Station Mode Configuration4.4.1 Adding a New ProfileFollow the steps below to add a new profile.1Click Add in the Profile screen. An Add New Profile screen displays as shown next. Click Next to continue.Figure 31 Station Mode: Profile: Add a New Profile The following table describes the labels in this screen. SSID This field displays the SSID (Service Set IDentifier) of the profile.Channel This field displays the channel number used by the profile.Security This field shows whether data encryption is activated (WEP (WEP or 802.1x), WPA, WPA-PSK, WPA2, WPA2-PSK) or inactive (DISABLE).Transfer Rate This field displays the transmission speed of the selected profile in megabits per second (Mbps).Table 11 Station Mode: Profile (continued)LABEL DESCRIPTIONTable 12 Station Mode: Profile: Add a New Profile LABEL DESCRIPTIONAdd New ProfileProfile Name Enter a descriptive name in this field.SSID Select an available wireless device in the Scan Info table and click Select, or enter the SSID of the wireless device to which you want to associate in this field manually. Otherwise, enter Any to have the AG-220 associate to any AP or roam between any infrastructure wireless networks.Network Type Select Infrastructure to associate to an AP. Select Ad-Hoc to associate to a peer computer.Next Click Next to go to the next screen.Exit Click Exit to go back to the previous screen without saving.
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 552If you select the Infrastructure network type in the previous screen, skip to step 3. If you select the Ad-Hoc network type in the previous screen, a screen displays as follows. Select a channel number and click Next to continue.Note: To associate to an ad-hoc network, you must use the same channel as the peer computer.Figure 32 Station Mode: Profile: Select a Channel Scan Info This table displays the information of the available wireless networks within the transmission range.,, ordenotes that the wireless device is in infrastructure mode and the wireless security is activated.denotes that the wireless device is in infrastructure mode but the wireless security is deactivated.denotes that the wireless device is in Ad-Hoc mode and the wireless security is activated.denotes that the wireless device is in Ad-Hoc mode but the wireless security is deactivated.SSID This field displays the SSID (Service Set IDentifier) of each AP or peer device.Scan Click Scan to search for available wireless devices within transmission range.Select Select an available wireless device in the table and click Select to add it to this profile.Whenever you activate this profile, the AG-220 associates to the selected wireless network only.Table 12 Station Mode: Profile: Add a New Profile (continued)LABEL DESCRIPTION
ZyXEL AG-220 User’s Guide56 Chapter 4 Wireless Station Mode ConfigurationThe following table describes the labels in this screen. 3If you selected Infrastructure network type in the first screen, select WEP, WPA, WPA2, WPA-PSK, WPA2-PSK or 802.1x from the drop-down list box to enable data encryption. If you selected Ad-Hoc network type in the first screen, you can only use WEP encryption method. Otherwise, select DISABLE to allow the AG-220 to communicate with the access points or other peer wireless computers without any data encryption, and skip to step 5.Figure 33 Station Mode: Profile: Wireless Settings 4The screen varies depending on the encryption method you select in the previous screen. The settings must be exactly the same on the APs or other peer wireless computers as they are on the AG-220. Refer to Section 4.3.1 on page 47 for detailed information on wireless security configuration.Table 13 Station Mode: Profile: Select a Channel LABEL DESCRIPTIONWireless SettingsChannel Select a channel number from the drop-down list box. To associate to an ad-hoc network, you must use the same channel as the peer computer.
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 57Figure 34 Station Mode: Profile: Security Settings 5This read-only screen shows a summary of the new profile settings. Verify that the settings are correct. Click Save to save and go to the next screen. Click Back to return to the previous screen. Otherwise, click Exit to go back to the Profile screen without saving.Figure 35 Station Mode: Profile: Confirm New Settings 6To use this network profile, click the Activate Now button. Otherwise, click the Activate Later button. You can activate only one profile at a time. Note: Once you activate a profile, the ZyXEL utility will use that profile the next time it is started.
ZyXEL AG-220 User’s Guide58 Chapter 4 Wireless Station Mode ConfigurationFigure 36 Station Mode: Profile: Activate the Profile 4.5 The Advanced ScreenTo set the network mode of the AG-220, click the Advanced tab.Figure 37 Station Mode: AdvancedThe following table describes the labels in this screen.Table 14 Station Mode: AdvancedLABEL DESCRIPTIONAdvanced SettingFrequency Choose a network mode. Select Auto (default) to have your AG-220 automatically connect to other wireless devices in IEEE 802.11a, b or g modes. Select 11a to have your AG-220 connect to other wireless devices in IEEE 802.11a mode only, or 11b+11g to have your AG-220 connect to other wireless devices in IEEE 802.11b and 802.11g modes only. Save Click Save to save the changes to the AG-220. If you are connected to a wireless network when changing network modes, the AG-220 will disconnect and then attempt to reestablish the connection using the new setting.
ZyXEL AG-220 User’s GuideChapter 4 Wireless Station Mode Configuration 594.6 The Adapter Screen To set the other advanced features on the AG-220, click the Adapter tab.Figure 38 Station Mode: Adapter The following table describes the labels in this screen. Table 15 Station Mode: Adapter LABEL DESCRIPTIONAdapter SettingTransmission Rate In most networking scenarios, the factory default Fully Auto setting is the most efficient and allows your AG-220 to operate at the highest possible transmission (data) rate. If you want to select a specific transmission rate, select one that the AP or peer wireless device supports. Note: With USB 1.0/1.1, the AG-220 can only transmit at up to 11Mbps.Preamble Type Preamble is used to signal that data is coming to the receiver. Select the preamble type that the AP uses.Short preamble increases performance as less time sending preamble means more time for sending data. All IEEE 802.11b/g compliant wireless adapters support Long preamble, but not all support short preamble. Select Auto to have the AG-220 automatically use short preamble when all access point or wireless stations support it; otherwise the AG-220 uses long preamble. Note: The AG-220 and the access point or wireless stations MUST use the same preamble mode in order to communicate.Power Saving ModeSelect Maximum Power Save or Fast Power Save to save power (especially for notebook computers). This forces the AG-220 to go to sleep mode when it is not transmitting data.When you select Continuous Access Mode, the AG-220 will never go to sleep mode.
ZyXEL AG-220 User’s Guide60 Chapter 4 Wireless Station Mode ConfigurationOTIST (One-Touch Intelligent Security Technology)Select this check box to enable OTIST.Setup Key Enter the same setup key (up to eight printable characters) as the ZyXEL AP or wireless router to which you want to associate. The default OTIST setup key is "01234567". Note: If you change the OTIST setup key on the ZyXEL AP or wireless router, you must also make the same change here.Start Click Start to encrypt the wireless security data using the setup key and have the ZyXEL AP or wireless router set your AG-220 to use the same wireless settings as the ZyXEL AP or wireless router. You must also activate and start OTIST on the ZyXEL AP or wireless router all within three minutes. See Section 3.3 on page 39 for more information.Save Click Save to save the changes to the AG-220 and return to the Link Info screen.Table 15 Station Mode: Adapter (continued)LABEL DESCRIPTION
ZyXEL AG-220 User’s GuideChapter 5 Access Point Mode Configuration 61CHAPTER 5Access Point ModeConfigurationThis chapter shows you how to configure your AG-220 in access point mode.5.1 Access Point Mode Introduction To set your AG-220 to access point (AP) mode, select AP Mode in any utility screen (refer to Section 1.2.3 on page 23).Access point mode allows you to set up your wireless networks without using a dedicated AP. 5.1.1 ZyXEL Utility Screen Summary This section describes the ZyXEL utility screens when the AG-220 is in AP mode. Figure 39 ZyXEL Utility Menu Summary: AP Mode The following table describes the menus. Table 16 ZyXEL Utility Menu Summary: AP ModeTAB DESCRIPTIONAP ModeLink Info Use this screen to see your current connection status, configuration and data rate statistics.Configuration Use this screen to configure wireless LAN settings. Advanced Use this screen to change the wireless network mode.MAC Filter Use this screen to configure which computer(s) you want access to the wireless LAN through the AG-220.
ZyXEL AG-220 User’s Guide62 Chapter 5 Access Point Mode Configuration5.1.2 Additional Setup RequirementsTo bridge your wired and wireless network using the AG-220, the following requirements must be met:1The AG-220 must be installed on a computer connected to the wired network.2Either bridge the two interfaces (wireless and wired) on the computer (using the Configuration screen of the ZyXEL utility in Windows XP) or configure network sharing (refer to Appendix B on page 75 for an example).3Set the wireless station’s IP address to be dynamic if you want the wireless stations to access the wired network or the Internet through the AG-220. Refer to Appendix E on page 97 for how to configure your computer’s IP address.5.2 The Link Info Screen Select the AP Mode check box and wait for about five seconds to display the screen as shown.Figure 40 Access Point Mode: Link Info The following table describes the labels in this screen. Table 17 Access Point Mode: Link Info LABEL DESCRIPTIONStatusSSID This field displays the name that identifies your AG-220 in the wireless LAN network.Current Channel This field displays the radio channel the AG-220 is currently using.Transmission Rate This field displays the current transmission rate of the AG-220 in megabits per second (Mbps).
ZyXEL AG-220 User’s GuideChapter 5 Access Point Mode Configuration 635.3 The Configuration Screen Click Configuration in the ZyXEL utility screen to display the screen as shown.Figure 41 Access Point Mode: Configuration Security This field shows whether data encryption is activated (WEP) or inactive (DISABLE).MAC This field displays the MAC address of the AG-220.Output Power This field shows the strength of the AG-220’s antenna gain or transmission power.Association List This table lists up to 16 wireless clients that are currently connected to the AG-220. denotes a wireless client without WEP security. denotes a wireless client with WEP security enabled. MAC Address This field displays the MAC addresses of a wireless client that is currently connected to the AG-220.Refresh Click Refresh to update this screen.Table 17 Access Point Mode: Link Info (continued)LABEL DESCRIPTION
ZyXEL AG-220 User’s Guide64 Chapter 5 Access Point Mode ConfigurationThe following table describes the labels in this screen. Table 18 Access Point Mode: Configuration LABEL DESCRIPTIONWireless SettingsSSID The SSID identifies the wireless network to which a wireless station is associated. Wireless stations associating to the access point (the AG-220) must have the same SSID.Enter a descriptive name (up to 32 printable 7-bit ASCII characters) for the wireless LAN.Hide SSID Select this check box to hide the SSID so an intruder cannot obtain the SSID through scanning using a site survey tool.Channel Set the operating frequency/channel depending on your geographical region.Output Power Set this field if you need to conserve power consumption (especially for notebook computers). This control changes the strength of the AG-220’s antenna gain or transmission power. Antenna gain, measured in dBm (decibel relative units compared to milliwatts), is the increase in coverage. Higher antenna gain improves the range of the signal for better communications.Select High to set the AG-220’s antenna to transmit at 17-dBm.Select Medium-High to set the AG-220’s antenna to transmit at 15-dBm.Select Medium-Low to set the AG-220’s antenna to transmit at 13-dBm.Select Low to set the AG-220’s antenna to transmit at 11-dBm. This allows for the least power consumption.Bridge Select the check box and an Ethernet adapter (network interface card (NIC)) on your computer from the drop-down list box. This allows you to connect your wireless network to the specified wired network.Security SettingsWEP Select 64 Bits, 128 Bits or 256 Bits to activate WEP encryption and then fill in the related fields. Select Disable to deactivate the WEP encryption.Authentication TypeSelect an authentication method. Choices are Auto, Shared Key and Open System. Refer to Section 3.2.3.1.2 on page 37 for more information.Pass Phrase When you select the radio button, enter a passphrase of up to 63 case-sensitive printable characters. As you enter the passphrase, the AG-220 automatically generates four different WEP key and displays it in the key field below. Refer to Section 3.2.3.1 on page 37 for more information.At the time of writing, you cannot use passphrase to generate 256-bit WEP keys.Transmit Key Select a default WEP key to use for data encryption. The key displays in the field below.
ZyXEL AG-220 User’s GuideChapter 5 Access Point Mode Configuration 655.4 The Advanced ScreenTo set the network mode of the AG-220, click the Advanced tab.Key x (where x is a number between 1 and 4)Select this option if you want to manually enter the WEP keys.Enter the WEP key in the field provided.If you select 64 Bits in the WEP field.Enter either 10 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for example, 11AA22BB33) for HEX key typeorEnter 5 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (for example, MyKey) for ASCII key type.If you select 128 Bits in the WEP field,Enter either 26 hexadecimal digits in the range of “A-F”, “a-f” and “0-9” (for example, 00112233445566778899AABBCC) for HEX key typeorEnter 13 ASCII characters (case sensitive) ranging from “a-z”, “A-Z” and “0-9” (for example, MyKey12345678) for ASCII key type.If you select 256 Bits in the WEP field, Enter either 58 hexadecimal digits in the range of "A-F", "a-f" and "0-9" (for example, 0000111122223333444455556666777788889999AAAABBBBCCCC000011) for HEX key type or Enter 29 ASCII characters (case sensitive) ranging from "a-z", "A-Z" and "0-9" (for example, MyKey111122223333444455556678) for ASCII key type.Note: The values for the WEP keys must be set up exactly the same on all wireless devices in the same wireless LAN.ASCII WEP keys are case sensitive.Save Click Save to save the changes.Cancel Click Cancel to discard the changes.Table 18 Access Point Mode: Configuration (continued)LABEL DESCRIPTION
ZyXEL AG-220 User’s Guide66 Chapter 5 Access Point Mode ConfigurationFigure 42 Access Point Mode: AdvancedThe following table describes the labels in this screen.5.5 The MAC Filter Screen The MAC Filter screen allows you to configure the AG-220 to give exclusive access to devices (Accept) or exclude devices from connecting to the AG-220 (Reject). The MAC address is assigned at the factory and consists of six pairs of hexadecimal characters, for example, 00:A0:C5:00:00:02. You need to know the MAC address of the device(s) to configure this screen. See Section 3.2.2 on page 36 for more information.Table 19 Access Point Mode: AdvancedLABEL DESCRIPTIONAdvanced SettingFrequency Choose a network mode. Select 802.11b+g to have your AG-220 connect to other wireless devices in either IEEE 802.11 b or 802.11g modes. Alternatively, select 802.11g, 802.11b or 802.11a to have your AG-220 connect to other wireless devices in b, g or a mode only.Save Click Save to save the changes to the AG-220. If you are connected to a wireless network when changing network modes, the AG-220 will disconnect and then attempt to reestablish the connection using the new setting.
ZyXEL AG-220 User’s GuideChapter 5 Access Point Mode Configuration 67Figure 43 Access Point Mode: MAC Filter The following table describes the labels in this screen. Table 20 Access Point Mode: MAC Filter LABEL DESCRIPTIONFilter Type Define the filter action for the list of MAC addresses in the MAC address filter table.Select Disable to deactivate the MAC filter feature.Select Reject to block access to the AG-220, MAC addresses not listed will be allowed to access the AG-220.Select Accept to permit access to the AG-220, MAC addresses not listed will be denied access to the AG-220.Filter MAC Address 1-16Specify the MAC address(es) of the wireless station(s) that is allowed or denied association to the AG-220.Enter six pairs of hexadecimal digits (separated by colons) in the range of “A-F”, “a-f” and “0-9” (for example, 00:A0:C5:00:00:02).If you enter an invalid MAC address, once you click Save to save the values, a warning screen will be displayed.Save Click Save to save the changes to the AG-220.Cancel Click Cancel to discard the changes.
ZyXEL AG-220 User’s Guide68 Chapter 5 Access Point Mode Configuration
ZyXEL AG-220 User’s GuideChapter 6 Maintenance 69CHAPTER 6MaintenanceThis chapter describes how to uninstall or upgrade the ZyXEL utility.6.1 The About Screen The About screen displays driver and utility version numbers of the AG-220. To display the screen as shown below, click the about ( ) button.Figure 44 About The following table describes the read-only fields in this screen. 6.2 Uninstalling the ZyXEL Utility Follow the steps below to remove (or uninstall) the ZyXEL utility from your computer.1Click Start, (All) Programs, ZyXEL AG-220 Wireless USB Adapter Utility, Uninstall ZyXEL AG-220 Wireless USB Adapter Utility.2When prompted, click OK or Yes to remove the driver and the utility software.Table 21 About LABEL DESCRIPTIONDriver Version This field displays the version number of the AG-220 driver.Utility Version This field displays the version number of the ZyXEL utility.
ZyXEL AG-220 User’s Guide70 Chapter 6 MaintenanceFigure 45 Uninstall: Confirm 3Click Finish to complete uninstalling the software and restart the computer when prompted.Figure 46 Uninstall: Finish 6.3 Upgrading the ZyXEL Utility Note: Before you uninstall the ZyXEL utility, take note of your current wireless configurations.To perform the upgrade, follow the steps below.1Download the latest version of the utility from the ZyXEL web site and save the file on your computer.2Follow the steps in Section 6.2 on page 69 to remove the current ZyXEL utility from your computer.3Restart your computer when prompted.4Disconnect the AG-220 from your computer.5Double-click on the setup program for the new utility to start the ZyXEL utility installation.6Insert the AG-220 and check the version numbers in the About screen to make sure the new utility is installed properly.
ZyXEL AG-220 User’s GuideChapter 7 Troubleshooting 71CHAPTER 7 TroubleshootingThis chapter covers potential problems and the possible remedies. After each problem description, some instructions are provided to help you to diagnose and to solve the problem.7.1 Problems Starting the ZyXEL Utility 7.2 Problem Connecting to an Access PointTable 22 Troubleshooting Starting ZyXEL Utility PROBLEM CORRECTIVE ACTIONCannot start the ZyXEL Wireless LAN utilityMake sure the AG-220 is properly inserted and the LED is on. Refer to the Quick Start Guide for the LED descriptions.Use the Device Manager to check for possible hardware conflicts. Click Start, Settings, Control Panel, System, Hardware and Device Manager. Verify the status of the AG-220 under Network Adapter. (Steps may vary depending on the version of Windows). Install the AG-220 in another computer.If the error persists, you may have a hardware problem. In this case, you should contact your local vendor.The ZyXEL utility icon does not display.If you have installed the Funk Odyssey Client software on the computer, uninstall (remove) both the Funk Odyssey Client software and ZyXEL utility, and then install the ZyXEL utility again after restarting the computer.Table 23 Troubleshooting Access Point Connection Problem PROBLEM CORRECTIVE ACTION When using the Windows XP configuration tool, the AG-220 cannot scan for or connect to any access points.The AG-220 might still be operating in access point mode. This results when you set the AG-220 to operate in access point mode using the ZyXEL utility, close the ZyXEL utility and then use the Windows XP configuration tool.Before you use the Windows XP configuration tool, make sure you set the AG-220 to operate in station mode before you close and exit the ZyXEL utility.
ZyXEL AG-220 User’s Guide72 Chapter 7 Troubleshooting7.3 Problem with the Link Quality7.4 Problems Communicating With Other ComputersTable 24 Troubleshooting Link Quality PROBLEM CORRECTIVE ACTIONThe link quality and/or signal strength is poor all the time.Search and connect to another AP with a better link quality using the Site Survey screen.Move your computer closer to the AP or the peer computer(s) within the transmission range.There may be too much radio interference (for example microwave or another AP using the same channel) around your wireless network. Lower the output power of each AP.Make sure there are not too many wireless stations connected to a wireless network.Table 25 Troubleshooting Communication Problems PROBLEM CORRECTIVE ACTIONIn wireless station mode, the computer with the AG-220 installed cannot communicate with the other computer(s).In Infrastructure Mode• Make sure that the AP and the associated computers are turned on and working properly. • Make sure the AG-220 computer and the associated AP use the same SSID.• Change the AP and the associated wireless clients to use another radio channel if interference is high.• Make sure that the computer and the AP share the same security option and key. Verify the settings in the Profile Security Setting screen.• If you are using WPA(2) or WPA(2)-PSK security, try changing your encryption type from TKIP to AES or vice versa.In Ad-Hoc (IBSS) Mode• Verify that the peer computer(s) is turned on.• Make sure the AG-220 computer and the peer computer(s) are using the same SSID and channel.• Make sure that the computer and the peer computer(s) share the same security settings.• Change the wireless clients to use another radio channel if interference is high.In access point mode, the wireless station(s) cannot associate to the AG-220.Verify that the computer with the AG-220 installed is turned on.Make sure the wireless station(s) uses the same SSID as the AG-220.Make sure the wireless station(s) uses the same security settings.Verify that the wireless station(s) is not blocked in the MAC Filter screen.
ZyXEL AG-220 User’s GuideAppendix A 73APPENDIX AProduct SpecificationsTable 26 Product Specifications PHYSICAL AND ENVIRONMENTALProduct Name ZyXEL AG-220 802.11a/g Wireless USB AdapterInterface USB 2.0 compatibleStandards IEEE 802.11aIEEE 802.11bIEEE 802.11gNetwork Architectures InfrastructureAd-HocOperating Temperature 0 ~ 50 degrees CentigradeStorage Temperature -30 ~ 60 degrees CentigradeOperating Humidity 20 ~ 95% (non-condensing)Storage Humidity 20 ~ 95% (non-condensing)Power TX power consumption: < 380mARX power consumption: < 200mAVoltage 5VWeight 25.8 gDimension (W) 95 mm × (D) 30 mm × (H) 16 mmRADIO SPECIFICATIONSMedia Access Protocol IEEE 802.11Frequency Industrial Scientific Medical Band2.4 ~ 2.484 GHz (IEEE 802.11b/g) and 5.15 ~ 5.725GHz (IEEE 802.11a)
ZyXEL AG-220 User’s Guide74 Appendix AOperating Frequencies and ChannelsIEEE 802.11b/g: 2.4 ~ 2.4835 GHzFCC: 11 channelsTaiwan: 11 channelsCE: 13 channelsIEEE 802.11a:5.15 ~ 5.25 GHzFCC: 4 channelsCE: 4 channels5.25 ~ 5.35 GHzFCC: 4 channelsTaiwan: 4 channelsCE: 4 channels5.470 ~ 5.725 GHzCE: 11 channels5.725 ~ 5.825 GHzFCC: 4 channelsTaiwan: 4 channelsData Rate 54 Mbps with automatic fallback to 48, 36, 24, 18, 12, 9 and 6 MbpsModulation IEEE 802.11a: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (OFDM)IEEE 802.11b: 11, 5.5 Mbps (CCK), 2 Mbps (DQPSK), 1 Mbps (DBPSK)IEEE 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (OFDM)Average Output Power IEEE 802.11a: 12dBm (+/- 2dBm) at 54Mbps, OFDMIEEE 802.11b: 17dBm (+/- 2dBm) at 11Mbps, CCK, QPSK, BPSPKIEEE 802.11g: 14dBm (+/- 2dBm) at 54Mbps, OFDMRX Sensitivity IEEE 802.11g (OFDM): 54 Mbps: < -70 dBmIEEE 802.11b (CCK): 11 Mbps: < -85 dBmSOFTWARE SPECIFICATIONSDevice Drivers Microsoft Windows 98 Second Edition, Windows ME, Windows 2000, Windows XP, Windows XP 64-bit editionSecurity 64/128/256-bit WEPWPA/WPA-PSK/WPA2/WPA2-PSKIEEE 802.1xRoaming IEEE 802.11b/g compliantTable 26 Product Specifications (continued)
ZyXEL AG-220 User’s GuideAppendix B 75APPENDIX BAccess Point Mode Setup ExampleThis example uses the network sharing feature in Windows 2000 to bridge the wired and wireless network when you set the AG-220 in access point (AP) mode.Refer to Chapter 5 on page 61 for setup methods and requirements.Steps may vary depending on your Windows version. You may need to install additional software in Windows 98 Second Edition and Windows ME.Configuring the Computer on Which You Install the AG-2201Refer to Section 1.2.3 on page 23 to set the AG-220 to operate in AP mode.2Click Start, Settings, Network and Dial-up Connections (or click Start, Settings, Control Panel and double-click Network and Dial-up Connections).Figure 47 Windows 2000: Start 3Right-click on the icon for your wired Ethernet adapter and click Properties.
ZyXEL AG-220 User’s Guide76 Appendix BFigure 48 Windows 2000: Network and Dial-up Connections 4A Properties screen displays. Click the Sharing tab and select Enable Internet Connection Sharing for this connection. Click OK.Figure 49 Windows 2000: Network Properties If there is more than one network adapter on the computer, select Enable Internet Connection Sharing for this connection and select the network adapter to which you want to share network access.
ZyXEL AG-220 User’s GuideAppendix B 77Figure 50 WIndows 2000: Network Properties: Select Network Adapter 5A notice screen displays. Click Ye s . Figure 51 Windows 2000: Local Network Configuring the Wireless Station ComputerRefer to Appendix E on page 97 for information on how to set up the IP address of a computer you want to connect wirelessly to the AG-220.
ZyXEL AG-220 User’s Guide78 Appendix B
ZyXEL AG-220 User’s GuideAppendix C 79APPENDIX CManagement with Wireless ZeroConfigurationThis appendix shows you how to manage your AG-220 using the Windows XP wireless zero configuration tool.Be sure you have the Windows XP service pack 2 installed on your computer. Otherwise, you should at least have the Windows XP service pack 1 already on your computer and download the support patch for WPA from the Microsoft web site.Windows XP SP2 screen shots are shown unless otherwise specified. Click the help icon ( ) in most screens, move the cursor to the item that you want the information about and click to view the help.Activating Wireless Zero ConfigurationMake sure the Use Windows to configure my wireless network settings check box is selected in the Wireless Network Connection Properties screen. Refer to Appendix C on page 71.If you see the following screen, refer to article 871122 on the Microsoft web site for information on starting WZC.Figure 52 Windows XP SP2: WZC Not Available
ZyXEL AG-220 User’s Guide80 Appendix CConnecting to a Wireless Network 1Double-click the network icon for wireless connections in the system tray to open the Wireless Network Connection Status screen.Figure 53 Windows XP SP2: System Tray IconThe type of the wireless network icon in Windows XP SP2 indicates the status of the AG-220. Refer to the following table for details.2Windows XP SP2: In the Wireless Network Connection Status screen, click View Wireless Networks to open the Wireless Network Connection screen.Figure 54 Windows XP SP2: Wireless Network Connection StatusTable 27 Windows XP SP2: System Tray IconICON DESCRIPTIONThe AG-220 is connected to a wireless network.The AG-220 is in the process of connecting to a wireless network.The connection to a wireless network is limited because the network did not assign a network address to the computer.The AG-220 is not connected to a wireless network.
ZyXEL AG-220 User’s GuideAppendix C 81Windows XP SP1: In the Wireless Network Connection Status screen, click Properties and the Wireless Networks tab to open the Wireless Network Connection Properties screen.Figure 55 Windows XP SP1: Wireless Network Connection Status3Windows XP SP2: Click Refresh network list to reload and search for available wireless devices within transmission range. Select a wireless network in the list and click Connect to join the selected wireless network.Figure 56 Windows XP SP2: Wireless Network Connection
ZyXEL AG-220 User’s Guide82 Appendix CThe following table describes the icons in the wireless network list.Windows XP SP1: Click Refresh to reload and search for available wireless devices within transmission range. Select a wireless network in the Available networks list, click Configure and set the related fields to the same security settings as the associated AP to add the selected network into the Preferred networks table. Click OK to join the selected wireless network. Refer to the section on security settings (discussed later) for more information. Figure 57 Windows XP SP1: Wireless Network Connection Properties44.Windows XP SP2: If the wireless security is activated for the selected wireless network, the Wireless Network Connection screen displays. You must set the related fields in the Wireless Network Connection screen to the same security settings as the associated AP and click Connect. Refer to the section about security settings for more information. Otherwise click Cancel and connect to another wireless network without data encryption. Table 28 Windows XP SP2: Wireless Network ConnectionICON DESCRIPTIONThis denotes that wireless security is activated for the wireless network.This denotes that this wireless network is your preferred network. Ordering your preferred networks is important because the AG-220 tries to associate to the preferred network first in the order that you specify. Refer to the section on ordering the preferred networks for detailed information.This denotes the signal strength of the wireless network.Move your cursor to the icon to see details on the signal strength.
ZyXEL AG-220 User’s GuideAppendix C 83If there is no security activated for the selected wireless network, a warning screen appears. Click Connect Anyway if wireless security is not your concern.Figure 58 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSKFigure 59 Windows XP SP2: Wireless Network Connection: No Security5Verify that you have successfully connected to the selected network and check the connection status in the wireless network list or the connection icon in the Preferred networks or Available networks list.The following table describes the connection icons.Security SettingsWhen you configure the AG-220 to connect to a secure network but the security settings are not yet enabled on the AG-220, you will see different screens according to the authentication and encryption methods used by the selected network.AssociationSelect a network in the Preferred networks list and click Properties to view or configure security.Table 29 Windows XP: Wireless NetworksICON DESCRIPTIONThis denotes the wireless network is an available wireless network.This denotes the AG-220 is associated to the wireless network.This denotes the wireless network is not available.
ZyXEL AG-220 User’s Guide84 Appendix CFigure 60 Windows XP: Wireless (network) properties: AssociationThe following table describes the labels in this screen.Table 30 Windows XP: Wireless (network) properties: AssociationLABEL DESCRIPTIONNetwork name (SSID) This field displays the SSID (Service Set IDentifier) of each wireless network.Network AuthenticationThis field automatically shows the authentication method (Share, Open, WPA or WPA-PSK) used by the selected network. Data Encryption This field automatically shows the encryption type (TKIP, WEP or Disable) used by the selected network. Network Key Enter the pre-shared key or WEP key.The values for the keys must be set up exactly the same on all wireless devices in the same wireless LAN.Confirm network keyEnter the key again for confirmation.Key index (advanced)Select a default WEP key to use for data encryption.This field is available only when the network use WEP encryption method and the The key is provided for me automatically check box is not selected.The key is provided for me automaticallyIf this check box is selected, the wireless AP assigns the AG-220 a key.This is a computer-to-computer (ad hoc) network; wireless access points are not usedIf this check box is selected, you are connecting to another computer directly.OK Click OK to save your changes.Cancel Click Cancel to leave this screen without saving any changes you may have made.
ZyXEL AG-220 User’s GuideAppendix C 85AuthenticationClick the Authentication tab in the Wireless (network) properties screen to display the screen shown next. The fields on this screen are grayed out when the network is in Ad-Hoc mode or data encryption is disabled.Figure 61 Windows XP: Wireless (network) properties: AuthenticationThe following table describes the labels in this screen.Table 31 Windows XP: Wireless (network) properties: AuthenticationLABEL DESCRIPTIONEnable IEEE 802.1x authentication for this networkThis field displays whether the IEEE 802.1x authentication is active.If the network authentication is set to Open in the previous screen, you can choose to disable or enable this feature.EAP Type Select the type of EAP authentication. Options are Protected EAP (PEAP) and Smart Card or other Certificate. Properties Click this button to open the properties screen and configure certificates. The screen varies depending on what you select in the EAP type field.Authenticate as computer when computer information is availableSelect this check box to have the computer send its information to the network for authentication when a user is not logged on.Authenticate as guest when user or computer information is unavailableSelect this check box to have the computer access to the network as a guest when a user is not logged on or computer information is not available.OK Click OK to save your changes.Cancel Click Cancel to leave this screen without saving any changes you may have made.
ZyXEL AG-220 User’s Guide86 Appendix CAuthentication PropertiesSelect an EAP authentication type in the Wireless (network) properties: Authentication screen and click the Properties button to display the following screen. Protected EAP PropertiesFigure 62 Windows XP: Protected EAP PropertiesThe following table describes the labels in this screen.Table 32 Windows XP: Protected EAP PropertiesLABEL DESCRIPTIONValidate server certificateSelect the check box to verify the certificate of the authentication server.Connect to these serversSelect the check box and specify a domain in the field below to have your computer connect to a server which resides only within this domain.Trusted Root Certification Authorities:Select a trusted certification authority from the list below.Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information.Do not prompt user to authorize new server or trusted certification authorities.Select this check box to verify a new authentication server or trusted CA without prompting.This field is available only if you installed the Windows XP server pack 2.Select Authentication Method: Select an authentication method from the drop-down list box and click Configure to do settings.
ZyXEL AG-220 User’s GuideAppendix C 87Smart Card or other Certificate PropertiesFigure 63 Windows XP: Smart Card or other Certificate PropertiesThe following table describes the labels in this screen.Enable Fast ReconnectSelect the check box to automatically reconnect to the network (without re-authentication) if the wireless connection goes down.OK Click OK to save your changes.Cancel Click Cancel to leave this screen without saving any changes you may have made.Table 32 Windows XP: Protected EAP PropertiesLABEL DESCRIPTIONTable 33 Windows XP: Smart Card or other Certificate PropertiesLABEL DESCRIPTIONUse my smart card Select this check box to use the smart card for authentication.Use a certificate on this computerSelect this check box to use a certificate on your computer for authentication.Validate server certificateSelect the check box to check the certificate of the authentication server.Connect to these serversSelect the check box and specify a domain in the field below to have your computer connect to a server which resides only within this domain. Trusted Root Certification Authorities:Select a trusted certification authority from the list below.Note: You must first have a wired connection to a network and obtain the certificate(s) from a certificate authority (CA). Consult your network administrator for more information.View Certificate Click this button if you want to verify the selected certificate.
ZyXEL AG-220 User’s Guide88 Appendix COrdering the Preferred NetworksFollow the steps below to manage your preferred networks.1Windows XP SP2: Click Change the order of preferred networks in the Wireless Network Connection screen (see Figure 56 on page 81). The screen displays as shown. Figure 64 Windows XP SP2: Wireless Networks: Preferred NetworksWindows XP SP1: In the Wireless Network Connection Status screen, click Properties and the Wireless Networks tab to open the screen as shown.Use a different user name for the connection:Select the check box to use a different user name when the user name in the smart card or certificate is not the same as the user name in the domain that you are logged on to.OK Click OK to save your changes.Cancel Click Cancel to leave this screen without saving any changes you may have made.Table 33 Windows XP: Smart Card or other Certificate PropertiesLABEL DESCRIPTION
ZyXEL AG-220 User’s GuideAppendix C 89Figure 65 Windows XP SP1: Wireless Networks: Preferred Networks2Whenever the AG-220 tries to connect to a new network, the new network is added in the Preferred networks table automatically. Select a network and click Move up or Move down to change it's order, click Remove to delete it or click Properties to view the security, authentication or connection information of the selected network. Click Add to add a preferred network into the list manually.
ZyXEL AG-220 User’s Guide90 Appendix C
ZyXEL AG-220 User’s GuideAppendix D 91APPENDIX DWireless SecurityTypes of EAP AuthenticationThis section discusses some popular authentication types: EAP-MD5, EAP-TLS, EAP-TTLS, PEAP and LEAP. Your wireless LAN device may not support all authentication types. EAP (Extensible Authentication Protocol) is an authentication protocol that runs on top of the IEEE 802.1x transport mechanism in order to support multiple types of user authentication. By using EAP to interact with an EAP-compatible RADIUS server, an access point helps a wireless station and a RADIUS server perform authentication. The type of authentication you use depends on the RADIUS server and an intermediary AP(s) that supports IEEE 802.1x.For EAP-TLS authentication type, you must first have a wired connection to the network and obtain the certificate(s) from a certificate authority (CA). A certificate (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the identity of each certificate owner.EAP-MD5 (Message-Digest Algorithm 5)MD5 authentication is the simplest one-way authentication method. The authentication server sends a challenge to the wireless station. The wireless station ‘proves’ that it knows the password by encrypting the password with the challenge and sends back the information. Password is not sent in plain text. However, MD5 authentication has some weaknesses. Since the authentication server needs to get the plaintext passwords, the passwords must be stored. Thus someone other than the authentication server may access the password file. In addition, it is possible to impersonate an authentication server as MD5 authentication method does not perform mutual authentication. Finally, MD5 authentication method does not support data encryption with dynamic session key. You must configure WEP encryption keys for data encryption.
ZyXEL AG-220 User’s Guide92 Appendix DEAP-TLS (Transport Layer Security)With EAP-TLS, digital certifications are needed by both the server and the wireless stations for mutual authentication. The server presents a certificate to the client. After validating the identity of the server, the client sends a different certificate to the server. The exchange of certificates is done in the open before a secured tunnel is created. This makes user identity vulnerable to passive attacks. A digital certificate is an electronic ID card that authenticates the sender’s identity. However, to implement EAP-TLS, you need a Certificate Authority (CA) to handle certificates, which imposes a management overhead. EAP-TTLS (Tunneled Transport Layer Service) EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for only the server-side authentications to establish a secure connection. Client authentication is then done by sending username and password through the secure connection, thus client identity is protected. For client authentication, EAP-TTLS supports EAP methods and legacy authentication methods such as PAP, CHAP, MS-CHAP and MS-CHAP v2. PEAP (Protected EAP) Like EAP-TTLS, server-side certificate authentication is used to establish a secure connection, then use simple username and password methods through the secured connection to authenticate the clients, thus hiding client identity. However, PEAP only supports EAP methods, such as EAP-MD5, EAP-MSCHAPv2 and EAP-GTC (EAP-Generic Token Card), for client authentication. EAP-GTC is implemented only by Cisco.LEAPLEAP (Lightweight Extensible Authentication Protocol) is a Cisco implementation of IEEE 802.1x. Dynamic WEP Key ExchangeThe AP maps a unique key that is generated with the RADIUS server. This key expires when the wireless connection times out, disconnects or reauthentication times out. A new WEP key is generated each time reauthentication is performed.If this feature is enabled, it is not necessary to configure a default encryption key in the Wireless screen. You may still configure and store keys here, but they will not be used while Dynamic WEP is enabled.Note: EAP-MD5 cannot be used with Dynamic WEP Key Exchange
ZyXEL AG-220 User’s GuideAppendix D 93For added security, certificate-based authentications (EAP-TLS, EAP-TTLS and PEAP) use dynamic keys for data encryption. They are often deployed in corporate environments, but for public deployment, a simple user name and password pair is more practical. The following table is a comparison of the features of authentication types.WPA and WPA2Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. WPA2 (IEEE 802.11i) is a wireless security standard that defines stronger encryption, authentication and key management than WPA. Key differences between WPA(2) and WEP are improved data encryption and user authentication.If both an AP and the wireless clients support WPA2 and you have an external RADIUS server, use WPA2 for stronger data encryption. If you don't have an external RADIUS server, you should use WPA2-PSK (WPA2-Pre-Shared Key) that only requires a single (identical) password entered into each access point, wireless gateway and wireless client. As long as the passwords match, a wireless client will be granted access to a WLAN. If the AP or the wireless clients do not support WPA2, just use WPA or WPA-PSK depending on whether you have an external RADIUS server or not.Select WEP only when the AP and/or wireless clients do not support WPA or WPA2. WEP is less secure than WPA or WPA2.Encryption Both WPA and WPA2 improve data encryption by using Temporal Key Integrity Protocol (TKIP), Message Integrity Check (MIC) and IEEE 802.1x. WPA and WPA2 use Advanced Encryption Standard (AES) in the Counter mode with Cipher block chaining Message authentication code Protocol (CCMP) to offer stronger encryption than TKIP.Table 34 Comparison of EAP Authentication TypesEAP-MD5 EAP-TLS EAP-TTLS PEAP LEAPMutual Authentication No Yes Yes Yes YesCertificate – Client No Yes Optional Optional NoCertificate – Server No Yes Yes Yes NoDynamic Key Exchange No Yes Yes Yes YesCredential Integrity None Strong Strong Strong ModerateDeployment Difficulty Easy Hard Moderate Moderate ModerateClient Identity Protection No No Yes Ye s No
ZyXEL AG-220 User’s Guide94 Appendix DTKIP uses 128-bit keys that are dynamically generated and distributed by the authentication server. AES (Advanced Encryption Standard) is a block cipher that uses a 256-bit mathematical algorithm called Rijndael. They both include a per-packet key mixing function, a Message Integrity Check (MIC) named Michael, an extended initialization vector (IV) with sequencing rules, and a re-keying mechanism.WPA and WPA2 regularly change and rotate the encryption keys so that the same encryption key is never used twice. The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the PMK to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless stations. This all happens in the background automatically.The Message Integrity Check (MIC) is designed to prevent an attacker from capturing data packets, altering them and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, it is assumed that the data has been tampered with and the packet is dropped. By generating unique data encryption keys for every data packet and by creating an integrity checking mechanism (MIC), with TKIP and AES it is more difficult to decrypt data on a Wi-Fi network than WEP and difficult for an intruder to break into the network. The encryption mechanisms used for WPA(2) and WPA(2)-PSK are the same. The only difference between the two is that WPA(2)-PSK uses a simple common password, instead of user-specific credentials. The common-password approach makes WPA(2)-PSK susceptible to brute-force password-guessing attacks but it’s still an improvement over WEP as it employs a consistent, single, alphanumeric password to derive a PMK which is used to generate unique temporal encryption keys. This prevent all wireless devices sharing the same encryption keys. (a weakness of WEP)User Authentication WPA and WPA2 apply IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless stations using an external RADIUS database. WPA2 reduces the number of key exchange messages from six to four (CCMP 4-way handshake) and shortens the time required to connect to a network. Other WPA2 authentication features that are different from WPA include key caching and pre-authentication. These two features are optional and may not be supported in all wireless devices.Key caching allows a wireless client to store the PMK it derived through a successful authentication with an AP. The wireless client uses the PMK when it tries to connect to the same AP and does not need to go with the authentication process again.Pre-authentication enables fast roaming by allowing the wireless client (already connecting to an AP) to perform IEEE 802.1x authentication with another AP before connecting to it.
ZyXEL AG-220 User’s GuideAppendix D 95WPA(2)-PSK Application ExampleA WPA(2)s-PSK application looks as follows.1First enter identical passwords into the AP and all wireless clients. The Pre-Shared Key (PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters (including spaces and symbols).2The AP checks each client's password and (only) allows it to join the network if it matches its password.3The AP and wireless clients use the pre-shared key to generate a common PMK.4The AP and wireless clients use the TKIP or AES encryption process to encrypt data exchanged between them.Figure 66 WPA-PSK AuthenticationWPA(2) with RADIUS Application ExampleYou need the IP address of the RADIUS server, its port number (default is 1812), and the RADIUS shared secret. A WPA(2) application example with an external RADIUS server looks as follows. "A" is the RADIUS server. "DS" is the distribution system.1The AP passes the wireless client's authentication request to the RADIUS server.2The RADIUS server then checks the user's identification against its database and grants or denies network access accordingly.3The RADIUS server distributes a Pairwise Master Key (PMK) key to the AP that then sets up a key hierarchy and management system, using the pair-wise key to dynamically generate unique data encryption keys to encrypt every data packet that is wirelessly communicated between the AP and the wireless clients.
ZyXEL AG-220 User’s Guide96 Appendix DFigure 67 WPA(2) with RADIUS Application ExampleSecurity Parameters SummaryRefer to this table to see what other security parameters you should configure for each Authentication Method/ key management protocol type. MAC address filters are not dependent on how you configure these security features.Table 35 Wireless Security Relational MatrixAUTHENTICATION METHOD/ KEY MANAGEMENT PROTOCOLENCRYPTION METHODENTER MANUAL KEY IEEE 802.1XOpen None No DisableEnable without Dynamic WEP KeyOpen WEP No Enable with Dynamic WEP KeyYes Enable without Dynamic WEP KeyYes DisableShared WEP No Enable with Dynamic WEP KeyYes Enable without Dynamic WEP KeyYes DisableWPA TKIP/AES No EnableWPA-PSK TKIP/AES Yes DisableWPA2 TKIP/AES No EnableWPA2-PSK TKIP/AES Yes Disable
ZyXEL AG-220 User’s GuideAppendix E 97APPENDIX ESetting up Your Computer’s IP AddressAll computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed. Windows 98/Me/2000/XP and later operating systems and all versions of UNIX/LINUX include the software components you need to install and use TCP/IP on your computer. Windows 3.1 requires the purchase of a third-party TCP/IP application package.TCP/IP should already be installed on computers using Windows 2000 and XP.After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order to "communicate" with your network. Windows 98/MeClick Start, Settings, Control Panel and double-click the Network icon to open the Network window
ZyXEL AG-220 User’s Guide98 Appendix EFigure 68 WIndows 98/Me: Network: ConfigurationInstalling ComponentsThe Network window Configuration tab displays a list of installed components. You need a network adapter, the TCP/IP protocol and Client for Microsoft Networks.If you need the adapter:1In the Network window, click Add.2Select Adapter and then click Add.3Select the manufacturer and model of your network adapter and then click OK.If you need TCP/IP:1In the Network window, click Add.2Select Protocol and then click Add.3Select Microsoft from the list of manufacturers.4Select TCP/IP from the list of network protocols and then click OK.If you need Client for Microsoft Networks:1Click Add.2Select Client and then click Add.
ZyXEL AG-220 User’s GuideAppendix E 993Select Microsoft from the list of manufacturers.4Select Client for Microsoft Networks from the list of network clients and then click OK.5Restart your computer so the changes you made take effect.Configuring 1In the Network window Configuration tab, select your network adapter's TCP/IP entry and click Properties2Click the IP Address tab.• If your IP address is dynamic, select Obtain an IP address automatically. • If you have a static IP address, select Specify an IP address and type your information into the IP Address and Subnet Mask fields.Figure 69 Windows 98/Me: TCP/IP Properties: IP Address3Click the DNS Configuration tab.• If you do not know your DNS information, select Disable DNS.• If you know your DNS information, select Enable DNS and type the information in the fields below (you may not need to fill them all in).
ZyXEL AG-220 User’s Guide100 Appendix EFigure 70 Windows 98/Me: TCP/IP Properties: DNS Configuration4Click the Gateway tab.• If you do not know your gateway’s IP address, remove previously installed gateways.• If you have a gateway IP address, type it in the New gateway field and click Add.5Click OK to save and close the TCP/IP Properties window.6Click OK to close the Network window. Insert the Windows CD if prompted.7Restart your computer when prompted.Verifying Settings1Click Start and then Run.2In the Run window, type "winipcfg" and then click OK to open the IP Configuration window.3Select your network adapter. You should see your computer's IP address, subnet mask and default gateway.Windows 2000/XP1For Windows XP, click start, Control Panel. In Windows 2000, click Start, Settings, Control Panel.
ZyXEL AG-220 User’s GuideAppendix E 101Figure 71 Windows XP: Start Menu2For Windows XP, click Network Connections. For Windows 2000, click Network and Dial-up Connections.Figure 72 Windows XP: Control Panel3Right-click Local Area Connection and then click Properties.
ZyXEL AG-220 User’s Guide102 Appendix EFigure 73 Windows XP: Control Panel: Network Connections: Properties4Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and click Properties.Figure 74 Windows XP: Local Area Connection Properties5The Internet Protocol TCP/IP Properties window opens (the General tab in Windows XP).• If you have a dynamic IP address click Obtain an IP address automatically.
ZyXEL AG-220 User’s GuideAppendix E 103• If you have a static IP address click Use the following IP Address and fill in the IP address, Subnet mask, and Default gateway fields. Click Advanced.Figure 75 Windows XP: Advanced TCP/IP Settings6If you do not know your gateway's IP address, remove any previously installed gateways in the IP Settings tab and click OK.Do one or more of the following if you want to configure additional IP addresses:•In the IP Settings tab, in IP addresses, click Add.•In TCP/IP Address, type an IP address in IP address and a subnet mask in Subnet mask, and then click Add.• Repeat the above two steps for each IP address you want to add.• Configure additional default gateways in the IP Settings tab by clicking Add in Default gateways.•In TCP/IP Gateway Address, type the IP address of the default gateway in Gateway. To manually configure a default metric (the number of transmission hops), clear the Automatic metric check box and type a metric in Metric.• Click Add. • Repeat the previous three steps for each default gateway you want to add.• Click OK when finished.7In the Internet Protocol TCP/IP Properties window (the General tab in Windows XP):
ZyXEL AG-220 User’s Guide104 Appendix E• Click Obtain DNS server address automatically if you do not know your DNS server IP address(es).• If you know your DNS server IP address(es), click Use the following DNS server addresses, and type them in the Preferred DNS server and Alternate DNS server fields. If you have previously configured DNS servers, click Advanced and then the DNS tab to order them.Figure 76 Windows XP: Internet Protocol (TCP/IP) Properties8Click OK to close the Internet Protocol (TCP/IP) Properties window.9Click OK to close the Local Area Connection Properties window.10Restart your computer (if prompted).Verifying Settings1Click Start, All Programs, Accessories and then Command Prompt.2In the Command Prompt window, type "ipconfig" and then press [ENTER]. You can also open Network Connections, right-click a network connection, click Status and then click the Support tab.
ZyXEL AG-220 User’s GuideIndex 105IndexAAbout 69About your ZyXEL AG-220 21Access point (AP) 21, 35Access point mode 22Access point. See also AP.Activating a profile 57Adapter 59Ad-Hoc 22, 55Advanced Encryption Standard 38, 93Advanced settings 58, 59Antenna gain 64Antenna output power 63APSee also access point.AP MAC address 44AP mode 22, 33, 61additional setup requirements 62advanced 65configuration 32MAC filter 66requirements 24Association list 32, 63Authentication 45Authentication type 37, 49auto 38open system 38shared key 38Auto authentication 38Automatic connection 46Automatic network scan 27, 52BBand 73Bridge 64CCCMP 38Certificate Authority (CA) 38, 92Certifications 4Notices 5Viewing 5Changing modes 23, 44Channel 35, 44, 46, 55, 64, 74Configuration 64Configuration method 24important note 24Wireless Zero Configuration (WZC) 24Configuration methodsZyXEL utility 24Configuration status 44Connection status 44Contact Information 8Continuous access mode 59Copyright 3Creating a new profile 54Current configuration 44Current connection status 44Current status 62Customer Support 8DData encryption 46Data rate 74dBm 64Digital ID 38Dimensions 73Disclaimer 3Download 70Driver version 69Dynamic WEP Key Exchange 92EEAP (Extensible Authentication Protocol) 38EAP authentication 38, 91EAP-PEAP 38EAP-TLS 38EAP-TTLS 38
ZyXEL AG-220 User’s Guide106 IndexEnabling OTIST 39Encryption 46, 93Encryption type 37, 47, 49Environmental specifications 73FFast power save 59FCC Interference Statement 4Frequency 35, 58, 73GGetting started 21Graphics icons key 20HHardware connections 23Help 25Hide SSID 64Humidity 73IIEEE 802.1x 38, 50Industrial Scientific Medical Band 73Infrastructure 21Initialization vector (IV) 94Installation 23Interface 73Internet access 21IP addressdynamic 62setup 97LLink information 44, 62Link quality 45MMAC 63MAC filter 66, 72action 67Manual network connection 27Maximum power save 59Mbps 62Message Integrity Check (MIC) 38, 93Mode change 23Modulation 74NNetwork interface card (NIC) 64Network mode 45, 58Network name 44Network overlap 35Network scan 52Network sharing 62Network type 44, 46OOne-Touch Intelligent Security Technology (OTIST) 39Online help 25Open system authentication 38OTIST 39enabling 39introduction 39start 40Output power 63, 64, 74PPacket collisions 45Pairwise Master Key (PMK) 94Passphrase 37, 47Password phrase 37Peer computer 21, 55Physical specifications 73Power consumption 73Power saving mode 59Preamble 59
ZyXEL AG-220 User’s GuideIndex 107Product Registration 7Product specifications 73Profile 44, 53activation 57add new 54configure 27, 29default 52delete 53edit 53information 53new 53, 54QQuick Start Guide 19, 23, 71RRadio interference 72Radio specifications 73RADIUS 38, 39RADIUS server 94Real-time data traffic statistics 45Receive rate 44RegistrationProduct 7Related Documentation 19SSafety Warnings 6Save power 59, 64Scan 46Scan Info 55Search 46Security 36, 37, 44, 63, 74data encryption 37parameters 96settings 64Sensitivity 74Service Set Identity (SSID) 27, 35Setup key 39, 60Shared key authentication 38Signal strength 45, 46Site information 46Site survey 46scan 46security settings 47Sleep mode 59SSID 27, 35, 44, 46, 62, 64, 72Starting OTIST 40Statistics 44Support CD 19Syntax conventions 19System tray 24TTemperature 73Temporal Key Integrity Protocol (TKIP) 38, 93Total receive 45Total transmit 45Trademarks 3Transmission rate 44, 54, 59, 62Transmit key 47, 64Transmit rate 44Trend chart 45Troubleshooting 71AP connection 71link quality 72network communication 72starting the ZyXEL Utility 71UUninstalling the ZyXEL Utility 69Upgrading the ZyXEL Utilityimportant step 70Upgrading ZyXEL Utility 70USB 19, 73USB port 19User authentication 37, 94Utility installation 23Utility version 69VValidate server certificate 50Voltage 73
ZyXEL AG-220 User’s Guide108 IndexWWarranty 7Note 7Weight 73WEP 37, 47, 64automatic setup 37manual setup 37, 48, 65passphrase 37, 47, 64WEP (Wired Equivalent Privacy) 37WEP Encryption 47WEP key generation 37WEP security 33Wi-Fi Protected Access 38, 93Windows XP 24Wired network 64Wireless client 35Wireless LANintroduction 35security 36Wireless LAN (WLAN) 35Wireless network 35Wireless security 91Wireless standard 45, 73Wireless station mode 44adapter 59advanced 58configuration 43security settings 47site survey 46trend chart 45WLANSecurity parameters 96WPA 38, 49, 93WPA2 38, 49, 93WPA2-Pre-Shared Key 39, 93WPA2-PSK 39, 48, 93WPA-PSK 39, 48, 93WZC (Wireless Zero Configuration) 24, 32ZZyXEL AG-220 Modes 23ZyXEL Utility 24accessing 25driver version number 69exiting 24help 25reactivating 25status 24system tray icon 24upgrading 70version number 69

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