ZyXEL Communications G-220F WLAN USB Adapter User Manual ZyXEL G 220F User s Guide V1 00 July 2005

ZyXEL Communications Corporation WLAN USB Adapter ZyXEL G 220F User s Guide V1 00 July 2005

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ZyXEL G-220F802.11g Wireless USB 2.0 AdapterUser’s GuideVersion 1.0007/2005

ZyXEL G-220F User’s GuideCopyright 2CopyrightCopyright © 2005 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 G-220F User’s Guide3 Federal Communications Commission (FCC) Interference StatementFederal CommunicationsCommission (FCC) InterferenceStatementThe device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:• This device may not cause harmful interference.• This device must accept any interference received, including interference that may cause undesired operations.This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy, and if not installed and used in accordance with the instructions, may cause harmful interference to radio communications.If this equipment does cause harmful interference to radio/television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: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.Notice 1Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.This product has been designed for the WLAN 2.4 GHz network throughout the EC region and Switzerland, with restrictions in France.Caution1The equipment complies with FCC RF radiation exposure limits set forth for an uncontrolled environment, under 47 CFR 2.1093 paragraph (d)(2).2This Transmitter must not be co-located or operating in conjunction with any other antenna or transmitter.

ZyXEL G-220F User’s GuideFederal Communications Commission (FCC) Interference Statement 4Certifications1Go to 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 G-220F User’s Guide5ZyXEL Limited WarrantyZyXEL 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 (2) 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 value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the product is 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 of character 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.Online RegistrationRegister online at www.zyxel.com for free future product updates and information.

ZyXEL G-220F User’s GuideCustomer Support 6Customer 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 TELEPHONEAWEB 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 II Science Park Hsinchu 300 Ta i w a nsales@zyxel.com.tw +886-3-578-2439 ftp.zyxel.comftp.europe.zyxel.comCZECH REPUBLICinfo@cz.zyxel.com +420 241 091 350 www.zyxel.cz ZyXEL Communications Czech 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/S Columbus vej 5 2860 Soeborg Denmarksales@zyxel.dk +45 39 55 07 07FINLANDsupport@zyxel.fi +358-9-4780-8411 www.zyxel.fi ZyXEL Communications Oy Malminka ari 10 00700 Helsinki Finlandsales@zyxel.fi +358-9-4780 8448FRANCEinf o@zy xel .f r +33 ( 0)4 7 2 5 2 9 7 9 7 www. zy xel .f r ZyX EL Fran ce 1 ru e d es Verger s Bat. 1 / C 69760 Limonest France+33 (0)4 72 52 19 20GERMANYsupport@zyxel.de +49-2405-6909-0 www.zyxel.de ZyXEL Deutschland GmbH. Adenauerstr. 20/A2 D-52146 Wuerselen Germanysales@zyxel.de +49-2405-6909-99NORTH AMERICAsupport@zyxel.com +1-800-255-4101+1-714-632-0882www.us.zyxel.com ZyXEL Communications Inc.1130 N. Miller St.Anaheim CA 92806-2001 U.S.A.sales@zyxel.com +1-714-632-0858 ftp.us.zyxel.comNORWAYsupport@zyxel.no +47 22 80 61 80 www.zyxel.no ZyXEL Communications A/S Nils Hansens vei 13 0667 Oslo Norwaysales@zyxel.no +47 22 80 61 81SPAINsupport@zyxel.es +34 902 195 420 www.zyxel.es ZyXEL Communications Alejandro Villegas 33 1º, 28043 Madrid Spainsales@zyxel.es +34 913 005 345SWEDENsupport@zyxel.se +46 31 744 7700 www.zyxel.se ZyXEL Communications A/S Sjöporten 4, 41764 Göteborg Swedensales@zyxel.se +46 31 744 7701

ZyXEL G-220F User’s Guide7Customer SupportUNITED KINGDOMsupport@zyxel.co.uk +44 (0) 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 (0) 1344 303034 ftp.zyxel.co.uka. “+” is the (prefix) number you enter to make an international telephone call. METHODLOCATIONSUPPORT E-MAIL TELEPHONEAWEB SITEREGULAR MAILSALES E-MAIL FAX FTP SITE

ZyXEL G-220F User’s GuideTable of Contents 8Table of ContentsCopyright .................................................................................................................. 2Federal Communications Commission (FCC) Interference Statement ............... 3ZyXEL Limited Warranty.......................................................................................... 5Customer Support.................................................................................................... 6Table of Contents ..................................................................................................... 8List of Figures ........................................................................................................ 12List of Tables .......................................................................................................... 14Preface .................................................................................................................... 16Chapter 1Getting Started ....................................................................................................... 181.1 About Your ZyXEL G-220F ...............................................................................181.1.1 Application Overview ................................................................................181.1.1.1 Infrastructure ...................................................................................181.1.1.2 Ad-Hoc ............................................................................................191.1.1.3 Access Point Mode ........................................................................191.2 ZyXEL G-220F Hardware and Utility Installation ................................................201.3 Configuration Methods ......................................................................................201.4 Windows XP Users Only ....................................................................................201.5 Accessing the ZyXEL Utility ..............................................................................201.6 Connecting to a Wireless LAN ..........................................................................211.6.1 Site Survey ...............................................................................................211.7 ZyXEL G-220F Modes .....................................................................................231.7.1 Change ZyXEL G-220F Mode .................................................................231.8 ZyXEL Utility Screen Summary .........................................................................24Chapter 2Wireless LAN Network ........................................................................................... 262.1 Wireless LAN Overview ....................................................................................262.1.1 SSID .........................................................................................................262.1.2 Channel ....................................................................................................262.1.3 Transmission Rate (Tx Rate) ....................................................................262.2 Wireless LAN Security Overview ......................................................................262.2.1 Data Encryption with WEP ........................................................................27

ZyXEL G-220F User’s GuideTable of Contents 105.2 Uninstalling the ZyXEL Utility ............................................................................565.3 Upgrading the ZyXEL Utility ..............................................................................57Chapter 6 Troubleshooting .................................................................................................. 606.1 Problems Starting the ZyXEL Utility Program ....................................................606.2 Problem Connecting to an Access Point ............................................................606.3 Problem with the Link Status ..............................................................................616.4 Problems Communicating With Other Computers .............................................61Appendix AProduct Specifications .......................................................................................... 62Appendix BAccess Point Mode Setup Example ..................................................................... 64Appendix CDisable Windows XP Wireless LAN Configuration Tool..................................... 68Appendix DManagement with Wireless Zero Configuration.................................................. 74Appendix ETypes of EAP Authentication................................................................................ 86Appendix FSetting up Your Computer’s IP Address.............................................................. 90Index...................................................................................................................... 102

ZyXEL G-220F User’s Guide11 Table of Contents

ZyXEL G-220F User’s Guide13 List of FiguresFigure 39 WIndows 2000: Network Properties: Select Network Adapter .............. 66Figure 40 Windows 2000: Local Network .............................................................. 66Figure 41 Windows XP: System Tray Icon ............................................................. 68Figure 42 Windows XP SP1: Wireless Network Connection .................................. 69Figure 43 Windows XP SP2: Wireless Network Connection .................................. 69Figure 44 Windows XP SP1: Wireless Network Connection Properties ................ 70Figure 45 Windows XP SP2: Wireless Network Connection Properties ................ 70Figure 46 Windows XP SP1: Wireless Network Connection Status ....................... 71Figure 47 Windows XP SP2: Wireless Network Connection Status ....................... 71Figure 48 Windows XP SP1: Wireless Network Connection Properties ................ 72Figure 49 Windows XP SP2: Wireless Network Connection Properties ................ 72Figure 50 Windows XP SP2: WZC Not Available .................................................. 74Figure 51 Windows XP SP2: System Tray Icon ..................................................... 75Figure 52 Windows XP SP2: Wireless Network Connection Status ....................... 75Figure 53 Windows XP SP1: Wireless Network Connection Status ....................... 76Figure 54 Windows XP SP2: Wireless Network Connection .................................. 76Figure 55 Windows XP SP1: Wireless Network Connection Properties ................ 77Figure 56 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSK .. 78Figure 57 Windows XP SP2: Wireless Network Connection: No Security ............ 78Figure 58 Windows XP: Wireless (network) properties: Association ..................... 79Figure 59 Windows XP: Wireless (network) properties: Authentication ................. 80Figure 60 Windows XP: Protected EAP Properties ................................................ 81Figure 61 Windows XP: Smart Card or other Certificate Properties ...................... 82Figure 62 Windows XP SP2: Wireless Networks: Preferred Networks .................. 84Figure 63 Windows XP SP1: Wireless Networks: Preferred Networks .................. 84Figure 64 WIndows 95/98/Me: Network: Configuration .......................................... 91Figure 65 Windows 95/98/Me: TCP/IP Properties: IP Address .............................. 92Figure 66 Windows 95/98/Me: TCP/IP Properties: DNS Configuration ................. 93Figure 67 Windows XP: Start Menu ....................................................................... 94Figure 68 Windows XP: Control Panel ................................................................... 94Figure 69 Windows XP: Control Panel: Network Connections: Properties ............ 95Figure 70 Windows XP: Local Area Connection Properties ................................... 95Figure 71 Windows XP: Advanced TCP/IP Settings .............................................. 96Figure 72 Windows XP: Internet Protocol (TCP/IP) Properties .............................. 97Figure 73 Macintosh OS 8/9: Apple Menu ............................................................. 98Figure 74 Macintosh OS 8/9: TCP/IP ..................................................................... 98Figure 75 Macintosh OS X: Apple Menu ................................................................ 99Figure 76 Macintosh OS X: Network ...................................................................... 100

ZyXEL G-220F User’s Guide15 List of Tables

ZyXEL G-220F User’s GuidePreface 16PrefaceCongratulations on your purchase of the ZyXEL G-220F 802.11g Wireless USB 2.0 Adapter. Your ZyXEL G-220F is easy to install and configure. About This User's GuideThis manual is designed to guide you through the configuration of your ZyXEL G-220F 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 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 choices.• The SMT menu titles and labels are in Bold Times New Roman font. Predefined field choices are in Bold Arial font. Command and arrow keys are enclosed in square brackets. [ENTER] means the Enter, or carriage return key; [ESC] means the Escape key and [SPACE BAR] means the Space Bar.• Mouse action sequences are denoted using a comma. For example, “click the Apple icon, Control Panels and then Modem” means first click the Apple icon, then point your mouse pointer to Control Panels and then click Modem.Note: Register 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 G-220F User’s Guide17 Preface• For brevity’s sake, we will use “e.g.,” as a shorthand for “for instance”, and “i.e.,” for “that is” or “in other words” throughout this manual.• The ZyXEL G-220F 802.11g Wireless USB 2.0 Adapter may be referred to as the ZyXEL G-220F in this user’s guide. Graphics Icons KeyWireless Access Point Computer Notebook Computer Server Modem Wireless Signal Telephone Switch Router Internet Cloud

ZyXEL G-220F User’s GuideChapter 1 Getting Started 18CHAPTER 1Getting StartedThis chapter introduces the ZyXEL G-220F and prepares you to use the ZyXEL Utility.1.1 About Your ZyXEL G-220F The ZyXEL G-220F is an IEEE 802.11g compliant wireless LAN adapter. The following lists the main features of your ZyXEL G-220F. See the product specifications in the appendix for detailed features.• Automatic rate selection.• Security: WEP (Wired Equivalent Privacy), IEEE 802.1x, WPA-PSK, WPA (Wi-Fi Protected Access), WPA2-PSK and WPA2 • Proprietary SoftAP feature turns your ZyXEL G-220F into an access point (AP).• A built-in antenna• Plug-and-play installation for Windows ME, Windows 2000 and Windows XP.• Driver and utility support for Windows 98 Second Edition, Windows ME, Windows 2000 and Windows XP.1.1.1 Application OverviewThis section describes some network applications for the ZyXEL G-220F. 1.1.1.1 Infrastructure To connect to a network via an Access Point (AP), set the ZyXEL G-220F network type to Infrastructure. Through the AP, you can access the Internet or the wired network behind the AP.

ZyXEL G-220F User’s Guide19 Chapter 1 Getting StartedFigure 1 Application: Infrastructure 1.1.1.2 Ad-Hoc In case you prefer to set up a small independent wireless workgroup without an AP, use the Ad-Hoc mode.Ad-hoc mode does not require an AP or a wired network. Two or more wireless clients communicate directly to each other. Figure 2 Application: Ad-Hoc 1.1.1.3 Access Point Mode You can set the ZyXEL G-220F in access point mode. The following figure shows a network example.Figure 3 Application: Access Point Mode In the example, the ZyXEL G-220F is installed on computer A and set to operate in access point mode. Computer A shares Internet connection to the wireless LAN, so wireless stations B and C can access the Internet.

ZyXEL G-220F User’s GuideChapter 1 Getting Started 201.2 ZyXEL G-220F Hardware and Utility InstallationFollow the instructions in the Quick Start Guide to install the ZyXEL Utility and make hardware connections.1.3 Configuration Methods To configure your ZyXEL G-220F, use one of the following applications:• Wireless Zero Configuration (WZC) (recommended for Windows XP)• ZyXEL Utility (required when you want to use the ZyXEL G-220F as an access point)• Odyssey Client Manager (not supplied) Note: Do NOT use the Windows XP configuration tool or the Odyssey Client Manager and the ZyXEL Utility at the same time.Refer to the Odyssey Client Manager documentation for more information.1.4 Windows XP Users Only You must disable WZC if you want to use the ZyXEL utility. Refer to the appendices on how to deactivate WZC or how to use WZC to manage the ZyXEL G-220F.1.5 Accessing the ZyXEL Utility After you install and start the ZyXEL Utility, an icon for the ZyXEL Utility appears in the system tray.Note: When the ZyXEL Utility system tray icon displays, the ZyXEL G-220F is installed properly.Figure 4 ZyXEL Utility: System Tray Icon The color of the ZyXEL Utility system tray icon indicates the status of the ZyXEL G-220F. Refer to the following table for details.

ZyXEL G-220F User’s GuideChapter 1 Getting Started 22Figure 5 ZyXEL Utility: Site Survey 4To join a network, either click an SSID in the table and then click Connect or double-click an SSID. 5If the wireless security is activated for the selected wireless network, the Security Settings screen displays. This screen varies according to the network’s encryption method. Configure the same security settings as the associated network.Note: If the selected network is unavailable or security settings are not correct, the ZyXEL G-220F will be disconnected.Figure 6 ZyXEL Utility: Security Settings 6Verify that you have successfully connected to the selected network and check the network information in the Link Info screen. If the ZyXEL G-220F is not connected to a network, the fields in this screen are blank.

ZyXEL G-220F User’s Guide23 Chapter 1 Getting StartedFigure 7 ZyXEL Utility: Link Info 1.7 ZyXEL G-220F Modes You can set your ZyXEL G-220F to operate in either wireless station or access point (AP) modes. In wireless station mode, your ZyXEL G-220F must connect to a peer wireless station or an AP to take part in your wireless network.In access point mode, your ZyXEL G-220F functions as an access point. This allows you to set up your wireless network without using a dedicated AP device. Up to 16 wireless stations can associate to the ZyXEL G-220F to form a wireless network. Refer to Section 1.7.1 on page 23 and Chapter 4 on page 50 for more information.Note: With WZC, you cannot use the ZyXEL G-220F as an access point.1.7.1 Change ZyXEL G-220F Mode To change between the modes, select either the Station Mode or AP Mode option in any ZyXEL Utility screens.

ZyXEL G-220F User’s GuideChapter 1 Getting Started 24Figure 8 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 radio button.When you use the Windows XP WZC and the ZyXEL Utility to configure the ZyXEL G-220F at the same time, the ZyXEL G-220F automatically operates in wireless station mode and doesn’t allow any configuration change.1.8 ZyXEL Utility Screen Summary This sections describes the ZyXEL Utility screens. Figure 9 Menu Summary: Station Mode Figure 10 Menu Summary: AP Mode

ZyXEL G-220F User’s GuideChapter 2 Wireless LAN Network 26CHAPTER 2Wireless LAN NetworkThis chapter provides background information on wireless LAN network.2.1 Wireless LAN Overview This section describes the wireless LAN network terms and applications.2.1.1 SSIDThe SSID (Service Set Identity) is a unique name shared among all wireless devices in a wireless network. Wireless devices must have the same SSID to communicate with each other.2.1.2 ChannelA radio frequency used by a wireless device is called a channel.2.1.3 Transmission Rate (Tx Rate)The ZyXEL G-220F provides various transmission (data) rate options for you to select. Options include Fully Auto, 1 Mbps, 2 Mbps, 5.5 Mbps, 6 Mbps, 9 Mbps, 11 Mbps, 12 Mbps, 18 Mbps, 24 Mbps, 36 Mbps, 48 Mbps and 54 Mbps. In most networking scenarios, the factory default Fully Auto setting proves the most efficient. This setting allows your ZyXEL G-220F to operate at the maximum transmission (data) rate. When the communication quality drops below a certain level, the ZyXEL G-220F automatically switches to a lower transmission (data) rate. Transmission at lower data speeds is usually more reliable. However, when the communication quality improves again, the ZyXEL G-220F gradually increases the transmission (data) rate again until it reaches the highest available transmission rate. You can select any of the above options. If you wish to balance speed versus reliability, select 54 Mbps in a networking environment where you are certain that all wireless devices can communicate at the highest transmission (data) rate. 1 Mbps or 2 Mbps are used often in networking environments where the range of the wireless connection is more important than speed. Note: With USB1.0/1.1, the ZyXEL G-220F can only transmit at up to 11Mbps.2.2 Wireless LAN Security Overview Wireless LAN security is vital to your network to protect wireless communications.

ZyXEL G-220F User’s GuideChapter 2 Wireless LAN Network 282.2.3 WPA(2) Wi-Fi Protected Access (WPA) is a subset of the IEEE 802.11i standard. Key differences between WPA(2) and WEP are user authentication and improved data encryption.Note: At the time of writing, the ZyXEL Utility does not support WPA2. You must use either Funk Odyssey Client Manager or WZC to configure WPA2 on the ZyXEL G-220F. 2.2.3.1 User Authentication WPA(2) applies IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless clients using an external RADIUS database. Therefore, if you don't have an external RADIUS server, you should use WPA(2)-PSK (WPA -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 client will be granted access to a WLAN. 2.2.3.2 Encryption WPA(2) improves data encryption by using Temporal Key Integrity Protocol (TKIP) or Advanced Encryption Standard (AES), Message Integrity Check (MIC) and IEEE 802.1x. Temporal Key Integrity Protocol (TKIP) uses 128-bit keys that are dynamically generated and distributed by the authentication server. It includes 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.TKIP regularly changes and rotates 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 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. This all happens in the background automatically.AES (Advanced Encryption Standard) is a newer method of data encryption that also uses a secret key. This implementation of AES applies a 128-bit key to 128-bit blocks of data.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), TKIP makes it much more difficult to decode data on a Wi-Fi network than WEP, making it difficult for an intruder to break into the network.

ZyXEL G-220F User’s Guide29 Chapter 2 Wireless LAN NetworkThe 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 an easier-to-use, consistent, single, alphanumeric password.2.2.4 WPA(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 (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 derives and distributes keys to the wireless clients.4The AP and wireless clients use the TKIP encryption process to encrypt data exchanged between them.Figure 11 WPA-PSK Authentication2.2.5 WPA 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 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 G-220F User’s GuideChapter 2 Wireless LAN Network 30Figure 12 WPA with RADIUS Application Example2.3 Authentication Type The IEEE 802.11b/g standard describes a simple authentication method between the wireless stations and AP. Three authentication modes are defined: Auto, Open System and Shared Key.• Open System mode is implemented for ease-of-use and when security is not an issue. The wireless station and the AP do not share a secret key. Thus the wireless stations can associate with any AP and listen to any data transmitted plaintext.• Shared Key mode involves a shared secret key to authenticate the wireless station to the AP. This requires you to enable the WEP encryption and specify a WEP key on both the wireless station and the AP. • Auto authentication mode allows the ZyXEL G-220F to switch between the open and shared key authentication modes automatically. Use the auto mode if you do not know the authentication mode of the other wireless stations.2.4 Preamble TypePreamble is used to signal that data is coming to the receiver. 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 Long Preamble if you are unsure what preamble mode the wireless adapters support, and to provide more reliable communications in busy wireless networks. Select Short Preamble if you are sure the wireless adapters support it, and to provide more efficient communications.

ZyXEL G-220F User’s Guide31 Chapter 2 Wireless LAN NetworkSelect Auto to have the ZyXEL G-220F automatically use short preamble when all access point/wireless stations support it, otherwise the ZyXEL G-220F uses long preamble. Note: The ZyXEL G-220F and the access point/wireless stations MUST use the same preamble mode in order to communicate.2.5 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.2.5.1 Enabling OTISTYou must enable OTIST on both the AP and wireless client before you start transferring settings.We use the Prestige 334WT in this guide as an example. Screens may vary slightly for your ZyXEL devices.Note: The AP and wireless client(s) MUST use the same Setup key.2.5.1.1 APOn the Prestige 334WT, you can enable OTIST using the Reset button or the web configurator. If you use the Reset 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 Reset button for one or two seconds. Note: If you hold in the Reset button too long, the device will reset to the factory defaults!In 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 Ye s 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.

ZyXEL G-220F User’s GuideChapter 2 Wireless LAN Network 32 2.5.1.2 Wireless ClientStart the ZyXEL Utility and click the Adapter tab. Select the OTIST check box, enter the same Setup Key as your AP’s and click Save.2.5.2 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 or 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.See the user’s guide for more information. 1In the AP, a web configurator screen pops up showing you the security settings to transfer. After reviewing the settings, click OK.

ZyXEL G-220F User’s Guide33 Chapter 2 Wireless LAN Network2.5.3 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).5If 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.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 G-220F User’s GuideChapter 3 Wireless Station Mode Configuration 34CHAPTER 3Wireless Station ModeConfigurationThis chapter shows you how to configure your ZyXEL G-220F in wireless station mode.3.1 Wireless Station Mode Overview To set your ZyXEL G-220F in wireless station mode, refer to Section 1.7.1 on page 23.3.2 The Link Info Screen When the ZyXEL Utility starts, the Link Info screen displays, showing the current configuration and connection status of your ZyXEL G-220F.Figure 13 Station Mode: Link Info The following table describes the labels in this screen.

ZyXEL G-220F User’s GuideChapter 3 Wireless Station Mode Configuration 36Figure 14 Station Mode: Link Info: Trend Chart The following table describes the labels in this screen. 3.3 The Site Survey Screen Use the Site Survey screen to scan for and connect to a wireless network automatically.Figure 15 Station Mode: Site Survey Table 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 G-220F User’s Guide37 Chapter 3 Wireless Station Mode ConfigurationThe following table describes the labels in this screen. 3.3.1 Connecting to a WLAN NetworkFollow the steps below to connect to a WLAN network using the Site Survey screen.1Click Scan to search for all available wireless networks within range.2To join a network, click an entry in the table to select a wireless network and then click Connect.3If the WEP encryption is activated for the selected wireless network, the Security Settings screen displays. You must set the related fields in the Security Settings screen to the same security settings as the associated wireless device. Refer to Section 3.3.2 on page 38 for more information.Otherwise click the close ( ) button and connect to another wireless network without data encryption.4Verify that you have successfully connected to the selected network and check the network information in the Link Info 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 Info 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 (for WEP or RADIUS) WPA-PSK or WPA-RADIUS) or inactive (Disabled).MAC address This field displays the MAC address of the wireless device.Surveyed at This field displays the time when the wireless device is scanned.

ZyXEL G-220F User’s GuideChapter 3 Wireless Station Mode Configuration 383.3.2 Security Settings When you configure the ZyXEL G-220F to connect to a network with wireless security activated and the security settings are disabled on the ZyXEL G-220F, the screen varies according to the encryption method used by the selected network.3.3.2.1 WEP EncryptionFigure 16 Station Mode: Security Settings: WEP The following table describes the labels in this screen. Table 6 Station Mode: Security Settings: WEP LABEL DESCRIPTIONSecurity SettingsWEP Select 64 Bits, 128 Bits or 256 Bits to activate WEP encryption and then fill in the related fields.Select Disable to deactivate WEP encryption.Authentication Select an authentication method. Choices are Auto, Shared Key and Open System. Refer to Section 2.3 on page 30 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 ZyXEL G-220F automatically generates four different WEP keys and displays it in the key field below. Refer to Section 2.2.1 on page 27 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 G-220F User’s Guide39 Chapter 3 Wireless Station Mode Configuration3.3.2.2 WPA-PSKFigure 17 Station Mode: Security Settings: WPA-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.Save Click Save to save the changes back to the ZyXEL G-220F and display the Link Info screen. Otherwise, click the close ( ) button to discard changes and go back to the Site Survey screen.Table 6 Station Mode: Security Settings: WEP (continued)LABEL DESCRIPTION

ZyXEL G-220F User’s GuideChapter 3 Wireless Station Mode Configuration 40The following table describes the labels in this screen. 3.3.2.3 WPA-RADIUS3.3.2.3.1 EncryptionFigure 18 Station Mode: Security Settings: WPA-RADIUS: EncryptionThe following table describes the labels in this screen. Table 7 Station Mode: Security Settings: WPA-PSKLABEL DESCRIPTIONEncryption Type The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials.Select TKIP. Refer to Section 2.2.3 on page 28 for more information.Pass Phrase Type a passphrase from 8 to 63 case-sensitive ASCII characters (including spaces and symbols).Save Click Save to save the changes back to the ZyXEL G-220F and display the Link Info screen. Otherwise, click the close ( ) button to discard changes and go back to the Site Survey screen.Table 8 Station Mode: Security Settings: WPA-RADIUS: EncryptionLABEL DESCRIPTIONEncryption Type The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials.Select TKIP. Refer to Section 2.2.3 on page 28 for more information.Next Click Next to go to the next screen.

ZyXEL G-220F User’s Guide41 Chapter 3 Wireless Station Mode Configuration3.3.2.3.2 Authentication Figure 19 Station Mode: Security Settings: WPA-RADIUS: AuthenticationThe following table describes the labels in this screen. Table 9 Station Mode: Security Settings: WPA-RADIUS: AuthenticationLABEL DESCRIPTIONAuthentication TypeSelect an authentication method from the drop down list. Options are EAP-TLS and EAP-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 EAP-TLS in the Authentication Type field. Enter the password associated with the user name above. Certificate This field is only available when you select EAP-TLS in the Authentication Type field. Specify the location and name of a certificate in the Certificate field or click Browse to locate it.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.Browse This field is only available when you select EAP-TLS in the Authentication Type field.Click this button to display the Select Certificate screen, select a certificate and click OK.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 EAP-PEAP in the Authentication Type field.Use the drop-down list box to select a PEAP protocol. Options are MD5 CHALLENGE, TOKEN CARD and MS CHAP v2.Save Click Save to save the changes back to the ZyXEL G-220F and display the Link Info screen. Otherwise, click the close ( ) button to discard changes and go back to the Site Survey screen.

ZyXEL G-220F User’s GuideChapter 3 Wireless Station Mode Configuration 423.3.2.4 RADIUSConfigure IEEE 802.1x security with various authentication methods in this screen. Figure 20 Station Mode: Security Settings: RADIUSThe following table describes the labels in this screen. Table 10 Station Mode: Security Settings: RADIUSLABEL DESCRIPTIONAuthentication TypeSelect an authentication method from the drop down list. Options are EAP-TLS and EAP-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 EAP-TLS in the Authentication Type field. Enter the password associated with the user name above. Certificate This field is only available when you select EAP-TLS in the Authentication Type field. Specify the location and name of a certificate in the Certificate field or click Browse to locate it.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.Browse This field is only available when you select EAP-TLS in the Authentication Type field.Click this button to display the Select Certificate screen, select a certificate and click OK.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 EAP-PEAP in the Authentication Type field.Use the drop-down list box to select a PEAP protocol. Options are MD5 CHALLENGE, TOKEN CARD and MS CHAP v2.Save Click Save to save the changes back to the ZyXEL G-220F and display the Link Info screen. Otherwise, click the close ( ) button to discard changes and go back to the Site Survey screen.

ZyXEL G-220F User’s Guide49 Chapter 3 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 ZyXEL G-220F 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 at the same time. The process takes three minutes to completeSave Click Save to save the changes back to the ZyXEL G-220F and return to the Link Info screen.Table 14 Station Mode: Adapter (continued)LABEL DESCRIPTION

ZyXEL G-220F User’s GuideChapter 4 Access Point Mode Configuration 50CHAPTER 4Access Point ModeConfigurationThis chapter shows you how to configure your ZyXEL G-220F in access point mode.4.1 Access Point Mode Introduction To set your ZyXEL G-220F as an Access Point (AP), refer to Section 1.7.1 on page 23.In access point mode, your ZyXEL G-220F functions as an access point. This allows you to set up your wireless networks without using a dedicated AP device. Up to 16 wireless stations can associate to the ZyXEL G-220F.4.1.1 Additional Setup RequirementsTo bridge your wired and wireless network using the ZyXEL G-220F, the following requirements must be met:1The ZyXEL G-220F must be installed on a computer connected to the wired network.2Either configure network sharing (refer to Appendix B on page 64 for an example) or bridge the two interfaces (wireless and wired) on the computer.3Set the wireless station’s IP address to be in the same subnet as the computer in which the ZyXEL G-220F is installed. Refer to Appendix F on page 90.4.2 The Link Info Screen Select the AP Mode radio button and wait for about five seconds to display the screen as shown.

ZyXEL G-220F User’s Guide51 Chapter 4 Access Point Mode ConfigurationFigure 29 Access Point Mode: Link Info The following table describes the labels in this screen. 4.3 The Configuration Screen Click Configuration in the ZyXEL Utility screen to display the screen as shown.Table 15 Access Point Mode: Link Info LABEL DESCRIPTIONStatusSSID This field displays the name that identifies your ZyXEL G-220F in the wireless LAN network.Current Channel This field displays the radio channel the ZyXEL G-220F is currently using.Transmission Rate This field displays the current transmission rate of the ZyXEL G-220F in megabits per second (Mbps).Security This field shows whether data encryption is activated (WEP) or inactive (Disabled).MAC This field displays the MAC address of the ZyXEL G-220F.Output Power This field shows the strength of the ZyXEL G-220F’s antenna gain or transmission power.Association List This table lists up to 16 wireless clients that are currently connected to the ZyXEL G-220F. 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 ZyXEL G-220F.Refresh Click Refresh to update this screen.

ZyXEL G-220F User’s GuideChapter 4 Access Point Mode Configuration 52Figure 30 Access Point Mode: Configuration The following table describes the labels in this screen. Table 16 Access Point Mode: Configuration LABEL DESCRIPTIONWireless SettingsSSID The SSID identifies the Service Set to which a wireless station is associated. Wireless stations associating to the access point (the ZyXEL G-220F) 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 in the outgoing beacon frame so a station cannot obtain the SSID through passive scanning using a site survey tool.Channel Set the operating frequency/channel depending on your geographical region.OutputPower Set this field if you need to conserve power consumption (especially for notebook computers). This control changes the strength of the ZyXEL G-220F’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 ZyXEL G-220F’s antenna to transmit at 17-dBm.Select Medium-High to set the ZyXEL G-220F’s antenna to transmit at 15-dBm.Select Medium-Low to set the ZyXEL G-220F’s antenna to transmit at 13-dBm.Select Low to set the ZyXEL G-220F’s antenna to transmit at 11-dBm. This allows for the least power consumption.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 2.3 on page 30 for more information.

ZyXEL G-220F User’s Guide53 Chapter 4 Access Point Mode Configuration4.4 The MAC Filter Screen The MAC Filter screen allows you to configure the ZyXEL G-220F to give exclusive access to (Accept) devices or exclude devices from (Reject) connecting to the ZyXEL G-220F. Every Ethernet device has a unique MAC (Media Access Control) address. 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.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 ZyXEL G-220F automatically generates four different WEP key and displays it in the key field below. Refer to Section 2.2.1 on page 27 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.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 16 Access Point Mode: Configuration (continued)LABEL DESCRIPTION

ZyXEL G-220F User’s GuideChapter 4 Access Point Mode Configuration 54Figure 31 Access Point Mode: MAC Filter The following table describes the labels in this screen. Table 17 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 ZyXEL G-220F, MAC addresses not listed will be allowed to access the ZyXEL G-220F.Select Accept to permit access to the ZyXEL G-220F, MAC addresses not listed will be denied access to the ZyXEL G-220F.Filter MAC Address 1-16Specify the MAC address(es) of the wireless station(s) that is allowed or denied association to the ZyXEL G-220F.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 back to the ZyXEL G-220F.Cancel Click Cancel to discard the changes.

ZyXEL G-220F User’s Guide55 Chapter 4 Access Point Mode Configuration

ZyXEL G-220F User’s GuideChapter 5 Maintenance 56CHAPTER 5MaintenanceThis chapter describes how to uninstall or upgrade the ZyXEL Utility.5.1 The About Screen The About screen displays related version numbers of the ZyXEL G-220F. To display the screen as shown below, click the about ( ) button.Figure 32 About The following table describes the read-only fields in this screen. 5.2 Uninstalling the ZyXEL Utility Follow the steps below to remove (or uninstall) the ZyXEL Utility from your computer.1Click Start, Programs, ZyXEL G-220F Utility, Uninstall ZyXEL G-220F Utility.2Windows 98 SE/ Me, select Remove and click Next. Table 18 About LABEL DESCRIPTIONDriver Version This field displays the version number of the ZyXEL G-220F driver.Utility Version This field displays the version number of the ZyXEL Utility.

ZyXEL G-220F User’s Guide57 Chapter 5 MaintenanceFigure 33 Uninstall 3When prompted, click OK or Yes to remove the driver and the utility software.Figure 34 Uninstall: Confirm 4Click Finish to complete uninstalling the software and restart the computer when prompted.Figure 35 Uninstall: Finish 5.3 Upgrading the ZyXEL Utility Note: Before you uninstall the ZyXEL Utility, take note of the current network configuration.

ZyXEL G-220F User’s GuideChapter 5 Maintenance 58To 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 5.2 on page 56 to remove the current ZyXEL Utility from your computer.3Restart your computer when prompted.4Disconnect the ZyXEL G-220F from your computer.5Double-click on the setup program for the new utility to start the ZyXEL Utility installation.6Insert the ZyXEL G-220F and check the version numbers in the About screen to make sure the new utility is installed properly.

ZyXEL G-220F User’s Guide59 Chapter 5 Maintenance

ZyXEL G-220F User’s GuideChapter 6 Troubleshooting 60CHAPTER 6 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.6.1 Problems Starting the ZyXEL Utility Program6.2 Problem Connecting to an Access PointTable 19 Troubleshooting Starting ZyXEL Utility Program PROBLEM CORRECTIVE ACTIONCannot start the ZyXEL Wireless LAN UtilityMake sure the ZyXEL G-220F is properly inserted and the LED(s) 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 ZyXEL G-220F under Network Adapter. (Steps may vary depending on the version of Windows). Install the ZyXEL G-220F 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 install 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.If you use the Windows XP configuration tool and the ZyXEL Utility to configure the ZyXEL G-220F at the same time, the ZyXEL Utility icon does not display. You need to disable the Windows XP configuration tool (refer to Appendix C on page 68 for more information).Cannot change to Access Point modeIf you use the Windows XP configuration tool and the ZyXEL Utility to configure the ZyXEL G-220F at the same time, the ZyXEL G-220F automatically operates in wireless station mode. You need to disable the Windows XP configuration tool to change between the modes using the ZyXEL Utility (refer to Section 1.7.1 on page 23 for more information).Table 20 Troubleshooting Access Point Connection Problem PROBLEM CORRECTIVE ACTION When using the Windows XP configuration tool, cannot scan for or connect to any access points.The ZyXEL G-220F might still be operating in access point mode. This results when you set the ZyXEL G-220F 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 ZyXEL G-220F to operate in station mode before you close and exit the ZyXEL Utility.

ZyXEL G-220F User’s GuideAppendix A 62Appendix AProduct SpecificationsTable 23 Product Specifications PHYSICAL AND ENVIRONMENTALProduct Name ZyXEL G-220F 802.11g Wireless USB AdapterInterface USB 2.0 compatibleStandards IEEE 802.11bIEEE 802.11gNetwork Architectures InfrastructureAd-HocOperating Frequencies 2.412-2.484GHzOperating Channels IEEE 802.11b: 11 Channels (North America)IEEE 802.11g: 11 Channels (North America)IEEE 802.11b: 13 Channels (Europe)IEEE 802.11g: 13 Channels (Europe)Data Rate IEEE 802.11b: 11, 5.5, 2, 1MbpsIEEE 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 MbpsModulation IEEE 802.11g: Orthogonal Frequency Division Multiplexing (64QAM, 16QAM, QPSK and BPSK)IEEE 802311b: PBCC, Direct Sequence Spread Spectrum (CCK, DQPSK, DBPSK).Security 64/128/256-bit WEPOperating Temperature 0 ~ 50 degrees CentigradeStorage Temperature -30 ~ 60 degrees CentigradeOperating Humidity 20 ~ 95% (non-condensing)Storage Humidity 20 ~ 95% (non-condensing)Power IEEE 802.11g: TX: 450mA RX: 345mAIEEE 802.11b: TX: 450mA RX: 345mAVoltage 5VWeight 25.8 gDimension (W) 95 mm × (D) 30 mm × (H) 16 mmRADIO SPECIFICATIONSMedia Access Protocol IEEE 802.11Frequency 2.4 ~ 2.484GHz (Industrial Scientific Medical Band)Channels 1~11 Channels (USA, Canada)1~13 Channels (Europe)Data Rate IEEE 802.11g (OFDM): 6, 9, 12, 18, 24, 36, 48, 54 MbpsIEEE 802.11b: 1, 2, 5.5, 11 Mbps

ZyXEL G-220F User’s Guide63 Appendix AModulation IEEE 802.11g: 54, 48, 36, 24, 18, 12, 9, 6 Mbps (OFDM)IEEE 802.11b: 11, 5.5 Mbps (CCK), 2 Mbps (DQPSK), 1 Mbps (DBPSK)Output Power 17 dBm (typical) at 11Mbps CCK, QPSK, BPSK15 dBm (typical) at 54Mbps OFDMRX Sensitivity IEEE 802.11g (OFDM): 54 Mbps: < -72 dBmIEEE 802.11b (CCK): 11 Mbps: < -85 dBmSOFTWARE SPECIFICATIONSDevice Drivers Microsoft Windows 98 Second Edition, Windows ME, Windows 2000, Windows XPRoaming IEEE 802.11b/g compliantWEP Supports 64-bit, 128-bit and 256-bit WEP encryptionTable 23 Product Specifications (continued)

ZyXEL G-220F User’s GuideAppendix B 64Appendix 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 ZyXEL G-220F in access point (AP) mode.Refer to Chapter 4, “Access Point Mode Configuration,” on page 50 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 ZyXEL G-220F1Refer to Section 1.7.1 “Change ZyXEL G-220F Mode” on page 23 to set the ZyXEL G-220F 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 36 Windows 2000: Start 3Right-click on the icon for your wired Ethernet adapter and click Properties.

ZyXEL G-220F User’s Guide65 Appendix BFigure 37 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 38 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 G-220F User’s GuideAppendix B 66Figure 39 WIndows 2000: Network Properties: Select Network Adapter 5A notice screen displays. Click Ye s . Figure 40 Windows 2000: Local Network Configuring the Wireless Station ComputerRefer to Appendix F, “Setting up Your Computer’s IP Address,” on page 90 for more information on how to set up the wireless station computer(s) IP address.

ZyXEL G-220F User’s Guide67 Appendix B

ZyXEL G-220F User’s GuideAppendix C 68APPENDIX CDisable Windows XP Wireless LAN Configuration ToolWindows XP includes a configuration tool (also known as Wireless Zero Configuration (WZC)) for wireless devices. Follow the steps below to disable the configuration tool in Windows XP after you install the ZyXEL Utility. The screen varies depending on the version of Windows XP service pack.Via the Wireless Network System Tray IconIf the network icon for wireless connections is not present in the system tray, see the next section.1Double-click the network icon for wireless connections in the system tray. Figure 41 Windows XP: System Tray Icon2Windows XP SP1: When a Wireless Network Connection window displays, click Advanced….

ZyXEL G-220F User’s Guide69 Appendix C Figure 42 Windows XP SP1: Wireless Network ConnectionWindows XP SP2: When a Wireless Network Connection window displays, click Change advanced settings under Related Tasks and then the Wireless Networks tab.Figure 43 Windows XP SP2: Wireless Network Connection3In the Wireless Network Connection Properties window, make sure the Use Windows to configure my wireless network settings check box is not selected. Click OK.

ZyXEL G-220F User’s GuideAppendix C 70Figure 44 Windows XP SP1: Wireless Network Connection PropertiesFigure 45 Windows XP SP2: Wireless Network Connection Properties

ZyXEL G-220F User’s Guide71 Appendix C Via the Control Panel1If the icon for the wireless network connection is not in the system tray, click Start, Control Panel and double-click Network Connections. 2Double-click on the icon for wireless network connection to display a status window as shown below. 3Click Properties and click the Wireless Networks tab.Figure 46 Windows XP SP1: Wireless Network Connection StatusFigure 47 Windows XP SP2: Wireless Network Connection Status

ZyXEL G-220F User’s GuideAppendix C 724In the Wireless Network Connection Properties window, make sure the Use Windows to configure my wireless network settings check box is not selected. Click OK. Figure 48 Windows XP SP1: Wireless Network Connection PropertiesFigure 49 Windows XP SP2: Wireless Network Connection Properties

ZyXEL G-220F User’s Guide73 Appendix C

ZyXEL G-220F User’s GuideAppendix D 74APPENDIX DManagement with Wireless Zero ConfigurationThis appendix shows you how to manage your G-220F 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 68.If you see the following screen, refer to article 871122 on the Microsoft web site for information on starting WZC.Figure 50 Windows XP SP2: WZC Not Available

ZyXEL G-220F User’s Guide75 Appendix D Connecting 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 51 Windows XP SP2: System Tray IconThe type of the wireless network icon in Windows XP SP2 indicates the status of the ZyXEL G-220F. 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 52 Windows XP SP2: Wireless Network Connection StatusTable 24 Windows XP SP2: System Tray IconICON DESCRIPTIONThe ZyXEL G-220F is connected to a wireless network.The ZyXEL G-220F 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 ZyXEL G-220F is not connected to a wireless network.

ZyXEL G-220F User’s GuideAppendix D 76Windows 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 53 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 54 Windows XP SP2: Wireless Network Connection

ZyXEL G-220F User’s Guide77 Appendix D The 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 55 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 25 Windows XP SP2: Wireless Network Connection ICON 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 ZyXEL G-220F 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 G-220F User’s GuideAppendix D 78If 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 56 Windows XP SP2: Wireless Network Connection: WEP or WPA-PSKFigure 57 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 ZyXEL G-220F to connect to a secure network but the security settings are not yet enabled on the ZyXEL G-220F, you will see different screens according to the authentication and encryption methods used by the selected network.Table 26 Windows XP: Wireless NetworksICON DESCRIPTIONThis denotes the wireless network is an available wireless network.This denotes the ZyXEL G-220F is associated to the wireless network.This denotes the wireless network is not available.

ZyXEL G-220F User’s Guide79 Appendix D AssociationSelect a network in the Preferred networks list and click Properties to view or configure security.Figure 58 Windows XP: Wireless (network) properties: AssociationThe following table describes the labels in this screen.Table 27 Windows XP: Wireless (network) properties: Association LABEL 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 ZyXEL G-220F a key.

ZyXEL G-220F User’s GuideAppendix D 80AuthenticationClick 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 59 Windows XP: Wireless (network) properties: AuthenticationThe following table describes the labels in this screen.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.Table 27 Windows XP: Wireless (network) properties: Association (continued)LABEL DESCRIPTIONTable 28 Windows XP: Wireless (network) properties: Authentication LABEL 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.

ZyXEL G-220F User’s Guide81 Appendix D Authentication 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 60 Windows XP: Protected EAP PropertiesAuthenticate 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.Table 28 Windows XP: Wireless (network) properties: Authentication (continued)LABEL DESCRIPTION

ZyXEL G-220F User’s GuideAppendix D 82The following table describes the labels in this screen.Smart Card or other Certificate PropertiesFigure 61 Windows XP: Smart Card or other Certificate PropertiesTable 29 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.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.

ZyXEL G-220F User’s Guide83 Appendix D The following table describes the labels in this screen.Ordering 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 54 on page 76). The screen displays as shown. Table 30 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.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.

ZyXEL G-220F User’s GuideAppendix D 84Figure 62 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.Figure 63 Windows XP SP1: Wireless Networks: Preferred Networks2Whenever the ZyXEL G-220F 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 G-220F User’s Guide85 Appendix D

ZyXEL G-220F User’ GuideAppendix E 86Appendix ETypes of EAP AuthenticationThis appendix discusses some popular authentication types: EAP-MD5, EAP-TLS, EAP-TTLS, PEAP and LEAP. The type of authentication you use depends on the RADIUS server or the AP (consult your network administrator for more information). Your wireless LAN device may not support all authentication types. 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. EAP-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.

ZyXEL G-220F User’ Guide87 Appendix EPEAP (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 ExchangeFor 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.Table 31 Comparison of EAP Authentication TypesEAP-MD5 EAP-TLS EAP-TTLS PEAP LEAPMutual Authentication No Yes Yes Ye s 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 Yes No

ZyXEL G-220F User’ GuideAppendix E 88WPAUser Authentication WPA applies IEEE 802.1x and Extensible Authentication Protocol (EAP) to authenticate wireless stations using an external RADIUS database. Encryption WPA improves data encryption by using Temporal Key Integrity Protocol (TKIP) or Advanced Encryption Standard (AES), Message Integrity Check (MIC) and IEEE 802.1x. TKIP uses 128-bit keys that are dynamically generated and distributed by the authentication server. It includes 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.TKIP regularly changes and rotates 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.AES (Advanced Encryption Standard) also uses a secret key. This implementation of AES applies a 128-bit key to 128-bit blocks of data.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), TKIP makes it much more difficult to decrypt data on a Wi-Fi network than WEP, making it difficult for an intruder to break into the network. The encryption mechanisms used for WPA and WPA-PSK are the same. The only difference between the two is that WPA-PSK uses a simple common password, instead of user-specific credentials. The common-password approach makes WPA-PSK susceptible to brute-force password-guessing attacks but it’s still an improvement over WEP as it employs an easier-to-use, consistent, single, alphanumeric password.

ZyXEL G-220F User’ Guide89 Appendix ESecurity 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 32 Wireless Security Relational MatrixAUTHENTICATION METHOD/ KEY MANAGEMENT PROTOCOLENCRYPTION METHODENTER MANUAL KEY ENABLE IEEE 802.1X Open None No NoOpen WEP No Enable with Dynamic WEP Key Yes Enable without Dynamic WEP KeyYes Disable Shared WEP No Enable with Dynamic WEP KeyYes Enable without Dynamic WEP KeyYes Disable WPA WEP No YesWPA TKIP No YesWPA-PSK WEP Yes Yes WPA-PSK TKIP Yes Yes

ZyXEL G-220F User’s GuideAppendix F 90Appendix FSetting up Your Computer’s IP AddressAll computers must have a 10M or 100M Ethernet adapter card and TCP/IP installed. Windows 95/98/Me/NT/2000/XP, Macintosh OS 7 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 NT/2000/XP, Macintosh OS 7 and later operating systems.After the appropriate TCP/IP components are installed, configure the TCP/IP settings in order to "communicate" with your network. If you manually assign IP information instead of using dynamic assignment, make sure that your computers have IP addresses that place them in the same subnet as the ZyXEL G-220F’s LAN port.Windows 95/98/MeClick Start, Settings, Control Panel and double-click the Network icon to open the Network window

ZyXEL G-220F User’s Guide91 Appendix FFigure 64 WIndows 95/98/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 G-220F User’s GuideAppendix F 923Select 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 65 Windows 95/98/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 G-220F User’s Guide93 Appendix FFigure 66 Windows 95/98/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.7Turn on your ZyXEL G-220F and restart 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/NT/XP1For Windows XP, click start, Control Panel. In Windows 2000/NT, click Start, Settings, Control Panel.

ZyXEL G-220F User’s GuideAppendix F 94Figure 67 Windows XP: Start Menu2For Windows XP, click Network Connections. For Windows 2000/NT, click Network and Dial-up Connections.Figure 68 Windows XP: Control Panel3Right-click Local Area Connection and then click Properties.

ZyXEL G-220F User’s Guide95 Appendix FFigure 69 Windows XP: Control Panel: Network Connections: Properties4Select Internet Protocol (TCP/IP) (under the General tab in Win XP) and click Properties.Figure 70 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 G-220F User’s GuideAppendix F 96• 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 71 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 G-220F User’s Guide97 Appendix F• 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 72 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.10Turn on your ZyXEL G-220F and restart 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.Macintosh OS 8/9 1Click the Apple menu, Control Panel and double-click TCP/IP to open the TCP/IP Control Panel.

ZyXEL G-220F User’s GuideAppendix F 98Figure 73 Macintosh OS 8/9: Apple Menu2Select Ethernet built-in from the Connect via list.Figure 74 Macintosh OS 8/9: TCP/IP3For dynamically assigned settings, select Using DHCP Server from the Configure: list.

ZyXEL G-220F User’s Guide99 Appendix F4For statically assigned settings, do the following:•From the Configure box, select Manually.• Type your IP address in the IP Address box.• Type your subnet mask in the Subnet mask box.• Type the IP address of your ZyXEL G-220F in the Router address box.5Close the TCP/IP Control Panel.6Click Save if prompted, to save changes to your configuration.7Turn on your ZyXEL G-220F and restart your computer (if prompted).Verifying SettingsCheck your TCP/IP properties in the TCP/IP Control Panel window.Macintosh OS X1Click the Apple menu, and click System Preferences to open the System Preferences window.Figure 75 Macintosh OS X: Apple Menu2Click Network in the icon bar. • Select Automatic from the Location list.• Select Built-in Ethernet from the Show list. • Click the TCP/IP tab.3For dynamically assigned settings, select Using DHCP from the Configure list.

ZyXEL G-220F User’s GuideAppendix F 100Figure 76 Macintosh OS X: Network4For statically assigned settings, do the following:•From the Configure box, select Manually.• Type your IP address in the IP Address box.• Type your subnet mask in the Subnet mask box.• Type the IP address of your ZyXEL G-220F in the Router address box.5Click Apply Now and close the window.6Turn on your ZyXEL G-220F and restart your computer (if prompted).Verifying SettingsCheck your TCP/IP properties in the Network window.

ZyXEL G-220F User’s Guide101 Appendix F

ZyXEL G-220F User’s Guide103 Indexutility 18Llink information 34, 51MMAC (Media Access Control) 53MAC Filter 53MAC Filter action 54Message Integrity Check (MIC) 88Nnetwork type 35North America Contact Information 6Norway, Contact Information 6OOdyssey Client Manager 20One-Touch Intelligent Security Technology 31open system authentication 30OTIST Introduction 31output power 52PPairwise Master Key (PMK) 88passphrase 27, 38password phrase 27Power Saving Mode 48preamble 48product specifications 62profile 35, 43activation 47add new 43, 44delete 43edit 44information 44QQuick Start Guide 16, 20Rradio interference 61real-time data traffic statistics 35Regular Mail 6Related Documentation 16RTS/CTS threshold 30Ssave power 48, 52Scan Info 45security 27, 51, 62data encryption 27Security Parameters 89security setting 52Service 5Setup Key 31shared key authentication 30signal strength 37site survey 36connecting to a WLAN network 37scan 37security settings 38sleep mode 48SoftAP 18Spain, Contact Information 6SSID 35, 37, 51, 52SSID (Service Set Identity) 26Starting OTIST 32statistics 35support CD 16Support E-mail 6Sweden, Contact Information 6syntax conventions 16TTelephone 6Temporal Key Integrity Protocol (TKIP) 88

ZyXEL G-220F User’s GuideIndex 104transmission rate 35, 44, 48, 51, 62transmission rate (Tx Rate) 26transmit key 38Trend Chart 35troubleshooting 60access point mode and WZC 60AP connection 60link status 61network communication 61starting ZyXEL Utility 60Uuninstalling ZyXEL Utility 56upgrading ZyXEL Utility 57important step 58User Authentication 88Vvoltage 62WWeb Site 6WEP 27, 38, 52manual setup 27, 39, 53passphrase 27, 38, 53WEP (Wired Equivalent Privacy) 27Windows XP 20wireless LANauthentication 30channel 26introduction 26security 26SSID 26transmission rate 26Wireless LAN (WLAN) 26wireless standard 35, 62wireless station mode 23, 35configuration 34WLANSecurity parameters 89Worldwide Contact Information 6WZC (Wireless Zero Configuration) 20ZZyXEL G-220F Modes 23ZyXEL Limited WarrantyNote 5ZyXEL Utility 20accessing 20help 21opening 21system tray icon 20upgrade 57version 56

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