ZyXEL Communications AG-200 manuale d’uso

ZyXEL AG-200 User’s Guide ZyXEL AG-200 802.11a/b/g Wireless USB 2.0 Adapter User's Guide Version 1.0 October 2004[...]

ZyXEL AG-200 User’s Guide ii Copyright Copyright Copyright ©2004 by Zy XEL Communications Cor poration The contents of this publi cation may not be reproduced i n any part or a s a whole, transcribed, sto red in a retrieval system, translated into any langu ag e, or tr ansmitted i n any form or by any means, electronic, mechanical, magnetic, opt[...]

ZyXEL AG-200 User’s Guide ZyXEL Limited Warranty iii ZyXEL Limited W arranty ZyXEL warrants to the original end us er (purchaser) that this product is free from any defects in materials or workm anship for a period of up to tw o (2) years f rom the date of purch ase. During the warra nty perio d and upon pr oof of purcha se, should the product ha[...]

ZyXEL AG-200 User’s Guide iv FCC Statement Federal Communications Commission (FCC) Interference S t atement 1 The device complies with Part 15 of FCC rules. Op eration is subject to the following two conditio ns: • This device m ay not cause harmful interference. • This device must accept any interference received, incl uding interference tha[...]

ZyXEL AG-200 User’s Guide Customer Support v Customer Support When contacting your Cu stomer Support Representative, please have the follo wing in formation ready: ¾ Product m odel and serial number. ¾ Warranty Inform ation. ¾ Date you received your product. ¾ Brief descri ption of the problem and the steps you took to solve it . SUPPORT E-MA[...]

ZyXEL AG-200 User’s Guide vi Table of Contents T able of Content s Copyright...................................................................................................................... ................................. ii ZyXEL Limite d Warranty ............................................................................................[...]

ZyXEL AG-200 User’s Guide Table Of Contents vii 2.4 RTS/CTS T hreshold .............................................................................................................. ........ 2-8 2.5 Authentica tion Type ............................................................................................................ .........2-9 Chapte[...]

ZyXEL AG-200 User’s Guide viii Preface Preface Congratulations on the purc h ase of your new ZyXEL AG-200! About This User's Guide This manual provides information about the ZyXEL Wireless LAN Utility. Synt ax Conventions • “Type” or “Enter” m eans for you to type one or more char acters. "Select " or "Choose" m[...]

ZyXEL AG-200 User’s Guide Preface ix Graphics Icons Key Wireless Access Point Computer Notebook computer Server Modem Wireless Signal Telephone Swi tch Router[...]

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ZyXEL AG-200 User’s Guide Getting Started 1-1 Chapter 1 Getting Started This chapter introduces the ZyXEL AG-200 a nd prepares you to use the ZyXEL Utility. 1.1 About Y our Zy XEL AG-200 The ZyXEL AG- 200 is an IEEE 8 02.11a, 8 02.11b, and 802.11g com pliant wireless LAN a d apter. With the ZyXEL AG-200, you can enjoy wireless mobility within alm[...]

ZyXEL AG-200 User’s Guide 1-2 Getting Started Double-clicking on the icon will display the follo wing ZyXEL utility window. Each of the pages (Network, Profile, Site Surv ey, Options, Version) presented in the ZyXEL Utility are explained i n the followi ng sections.[...]

ZyXEL AG-200 User’s Guide Getting Started 1-3 1.3.1 Network This page s hows how the network is presently con figured: net work mode, information on the co nnected AP, TCP/IP, et c. This information ca nnot be modified in t he Network scree n. The “Current Status” (lower) window shows the signal quality, sign al streng th, channel, etc. betwe[...]

ZyXEL AG-200 User’s Guide 1-4 Getting Started 1.3.2 Profile This page is used to manage connecti ons with Access Points. You ca n create different co nfiguration profiles fo r connectio ns with different A Ps and SSIDs. The advanta ge of saving di fferent profiles is the easiness of qui ckly chan ging connectio ns without having to configure the [...]

ZyXEL AG-200 User’s Guide Getting Started 1-5 1) Click on [Add] and the followin g screen will appear. 2) On this screen you will insert some basic settings for your wireless network. a. [Profile Name] Enter in a descriptive name for this profile. b. [Network Mode] If connecting to an acce ss point or wireless router, choose “Infrastructure ”[...]

ZyXEL AG-200 User’s Guide 1-6 Getting Started then click on [Add to Profile]. If t h e acces s point you choose has encrypti on enabled, a window will pop up reminding you to enter the encryption info rmation on the next page. If your access poi nt is not listed, close t he [Site Survey] window, and type the name of the SSID into t he [SSID] fiel[...]

ZyXEL AG-200 User’s Guide Getting Started 1-7 a. Click [Next]. The following screen will appear. 4) On this screen you will configur e th e wi reless modes supported by this profile. a. Under [Fre quency Ban d], put a chec k mark next to each wi reless protocol you want this profile to s upport. If you are uns ure of whic h protocol to cho ose, l[...]

ZyXEL AG-200 User’s Guide 1-8 Getting Started c. Click [Next]. The following screen will appear. 5) Final Step a. Uncheck the bo x [Apply this profile now] if you do not want to activate th is profile at this time. b. Click [Save] to complete the wizard and save the profile you have just created. Remove To remove a profile from the “Profile Lis[...]

ZyXEL AG-200 User’s Guide Getting Started 1-9 Each page in [ Properties] is explained below.[...]

ZyXEL AG-200 User’s Guide 1-10 Getting Started Basic Settings : In this page, y ou can verify the nam e of the current profil e. [Profile Name] Allows you to change the name of the current profile. [Network Mo de] Allows you to chan ge between Infrast ructure and Ad-Hoc net working modes. [SSID] Allows you to change the SSID that this pr o f ile [...]

ZyXEL AG-200 User’s Guide Getting Started 1-11 Advanced Sett i ngs : This screen allows y ou to make changes to the default ways the adapter operates including advanced 802 .11 settings. Unless you ar e an advanced user and have deep knowledge ab ou t each property on this page, it is recommended that you leave them at the default settings.[...]

ZyXEL AG-200 User’s Guide 1-12 Getting Started WLAN Security: This screen allows you to configure th e security settings of you r wireless LAN . Security Mode 1) No Encryption All data sent between the AP and the client is left unencry pted and may be viewed by other wireless devices. 2) WEP Wired Equi valent Privacy – Encrypts al l traffic sen[...]

ZyXEL AG-200 User’s Guide Getting Started 1-13 To learn more about WPA please see Chapter 2. 4) WPA-PSK WPA-PSK is a compromi se between WPA and WE P. Like WEP, it uses a pre-shared key that every use r of the networ k must have i n order to be able to se nd and rece ive data. Lik e WPA, it uses either TKIP or AE S, which improve greatly over th [...]

ZyXEL AG-200 User’s Guide 1-14 Getting Started Chipset Features: This screen allows you to config ure advanced features built in to the wireless chipset. [Tx Power Level] Allo ws you to adjust the output pow er of your radio. Reduc ing ou tput power can reduce power usage of your laptop and will limit the distance that your wireless signal will r[...]

ZyXEL AG-200 User’s Guide Getting Started 1-15 TCP/IP: This allows you to change your TCP/IP settings. [Use IP Changer] By putting a ch eckmark in the box, you will overw rite your existing WLAN TCP/IP configuration and use the IP Chang er software built-in to the ZyXEL Utility. This allows you to configure TCP/IP settings for each profile.[...]

ZyXEL AG-200 User’s Guide 1-16 Getting Started 1.3.3 Site Survey This page shows a list of SSIDs in your vicinity. Info rmation regarding each SSID is also shown: SS ID, mode, signal st rength, channe l, BSSID (MA C address), dat a rate, and WE P/WPA status. Refresh [Refresh] will scan the vicinity for a ce rtai n amount of time and display the s[...]

ZyXEL AG-200 User’s Guide Getting Started 1-17 Selecting a network from the [Availa ble Networks] list will enable th e [D etail Info], [Connect] and [Ad d to profile] buttons. Detail Info [Detail info] will display the following screen sh owing the selected device's configuration info rmation. An alternative to clicking on [Detail info] is [...]

ZyXEL AG-200 User’s Guide 1-18 Getting Started Connect [Connect] will immediately co nnect you with the selected network . Add to profile [Add to profile] will have the same effect as clicking on [Add] in the [Profile] page[...]

ZyXEL AG-200 User’s Guide Getting Started 1-19 1.3.4 Options In this page you can configure the beh avior of the ZyXEL utility. Launch at windows startup Selecting this option will automatically start th e ZyXEL Utility p rogram whenever you start Windo ws. Auto DHCP renewal Automa tically renews t he DHCP info rmation after changi ng profiles. A[...]

ZyXEL AG-200 User’s Guide 1-20 Getting Started[...]

ZyXEL AG-200 User’s Guide Getting Started 1-21 1.3.5 V ersion Software and Hardware inf ormation of t he current cli ent device.[...]

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ZyXEL AG-200 User’s Guide WLAN N etworking 2-1 Chapter 2 Wireless LAN Networking This chapter provides background information on general wireless LAN networking technolo gy and terminology. 2.1 Overview This section describes the wireless LAN network terms and applications. 2.1.1 SSID The SSID (Service Set Identity) is a unique nam e shared a mon[...]

ZyXEL AG-200 User’s Guide 2-2 WLAN Ne tworking Ad-Hoc (IBSS) Ad-hoc mode doe s not require an AP or a wired network. Tw o or m ore wi rel ess stat io ns c om m unicate directly to eac h other. A n ad-hoc network ma y sometim es be referre d to as an I ndependent Basic Servic e Set (IBSS). Figure 2-1 IBSS Example T o set up an ad-hoc network, conf[...]

ZyXEL AG-200 User’s Guide WLAN N etworking 2-3 Figure 2-3 Infrastructure Net w ork Example 2.1.5 Roaming In an infrastruc ture network, wireless st ations are a ble to swit ch from one BSS to a nother as t hey move between the c overage areas. During t h is period, the wi reless stations m aintain unin terrupted connection to the network. This is[...]

ZyXEL AG-200 User’s Guide 2-4 WLAN Ne tworking Figure 2-4 Roaming Example 2.2 Wireless LAN Security Wireless LAN security is vital to your netwo rk to protect wireless communication between wireless stations and t he wired net work. The figure below shows the possible wireless security levels on your ZyXEL AG- 200. EAP (Extensible Authentication [...]

ZyXEL AG-200 User’s Guide WLAN N etworking 2-5 Configure the wireless LAN security using the Profile Security Settings screen. If you do not enab le any wireless security on your ZyXEL AG-200, the ZyXE L AG-200’s wireless communications are accessi ble to any wireless networking device that is in the cove rage area. 2.2.1 Dat a Encr yption with[...]

ZyXEL AG-200 User’s Guide 2-6 WLAN Ne tworking User Authentication WPA applies IEEE 802.1x a nd Extensible Authenticati on Protocol (EAP) to aut henticate wireless clients using an exte rnal RADIUS database. Therefore, if y ou don’t have an external RADIUS ser ver, you should use WPA-PSK (WPA -Pre-S hared Key) that only requires a single (ide n[...]

ZyXEL AG-200 User’s Guide WLAN N etworking 2-7 Step 4. The AP and wireless clients use the TKIP en cryption proce ss to encrypt data exchan ged between them. Figure 2-6 WPA-PSK Authentication 2.2.5 WP A with RADIUS Application Example You need the IP addr ess of the RA DIUS server, its port number (d efault is 1812), and the RA DIU S shared secre[...]

ZyXEL AG-200 User’s Guide 2-8 WLAN Ne tworking Figure 2-7 WPA with RADIUS Application Example 2.3 Fragment ation Threshold The Fragmentation Threshold is the m aximum data fragment size (bet ween 256 and 2432 bytes) that can be sent in the wireless network before the ZyXEL AG-200 will fragment the packet into smaller data frames. A large Fragment[...]

ZyXEL AG-200 User’s Guide WLAN N etworking 2-9 Figure 2-8 RTS Threshold When station A sends data to the AP, it might not know that the station B is already using the chan nel. If these two stations send data at the same time, co llisions may occur when both sets of data arri ve at the AP at the same time, resulting in a loss of messages for both[...]

ZyXEL AG-200 User’s Guide 2-10 WLAN Networking Open authentication 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 wi reless sta tions can associate with a ny AP and listen to any data transmitted plaintext. Shared authentication mode invo lves a shared sec[...]

ZyXEL AG-200 User’s Guide Maintenance 3-1 Chapter 3 Maintenance This chapter describes how to uninstall or upgrade the ZyXEL Utility. 3.1 The V ersion Screen The Version screen displays related version nu mbers of the ZyXEL AG-200. The following table d escribes the r ead-only fields in this screen.[...]

ZyXEL AG-200 User’s Guide 3-2 Maintenance About LABEL DESCRIPTION Package Version This field displays the version number of the combinatio n dri ver/utility package. Driver Version This field displays the version number of the ZyXEL driver. Utility Version This field displays the version number of the Z yXEL utility. 3.2 Uninst alling the ZyXEL U[...]

ZyXEL AG-200 User’s Guide Maintenance 3-3 3.3 Upgrading the ZyXEL Utility Before you uninst all the ZyXEL Utility , take note of the curren t netw ork configuration. To perform the upgrade, follow the steps b elow. Step 1. Download the latest version of the u tility from th e ZyXEL web site and save the file on your computer. Step 2. Follow the s[...]

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ZyXEL AG-200 User’s Guide Wireless Security 4-1 Chapter 4 Configuring Wireless Security This chapter covers the configuration of security options in the ZyXEL Utility. 4.1 Configuring Security You can confi gure your security setti ngs at any tim e. Simply select the profile you wish to edit under the [Profile] tab, select [Properties] and then c[...]

ZyXEL AG-200 User’s Guide 4-2 Wireless Security 1. Select [WEP] under [Security Mode] 2. Put a chec k mark ne xt to [Using Static WEP] 3. Click [Config]. You will then see the screen below. 4. [WEP Method] Select the corr ect encryption level to m atch your access point. Either 64, 128, or 152-bit. The encryption level set h er must match the en [...]

ZyXEL AG-200 User’s Guide Wireless Security 4-3 Manual Input ( Hexadecimal): You generate y ou r ow n WE P Key usi ng hexadecimal characters (10 characters for 64-bit, 26 c haract ers for 128-bit, 32 ch aracters for 152-bit) . 5. Click [OK] to save your settings and return to the previous screen. 6. If you want to use 802.1x authentication with W[...]

ZyXEL AG-200 User’s Guide 4-4 Wireless Security 4.4 Configuring WP A 1. Select [WPA-PSK] under [Security Mode]. 2. Select [Encryption method]. Yo u can c hoose between TKIP or AES. Mo st access points use TKIP for WPA. 3. See section 4.5 for co nfi guring 802.1x for WPA. 4.5 Configuring 802.1x 1. Choose t he EAP me thod under [ Authenti cation pr[...]

ZyXEL AG-200 User’s Guide Wireless Security 4-5 4.5.2 Configuring 802.1x – EAP-LEAP 1. Enter in uniq ue User ID and Password under [User Information] 4.5.3 Configuring 802.1x – EAP-PEAP 1. Clic k [Config] under [A uthentication prot ocol] 2. Select inne r PEAP prot ocol. You ch oices are [MS-C HAP v2] or [TLS]. 3. Click [OK] to finish and ret[...]

ZyXEL AG-200 User’s Guide 4-6 Wireless Security [Use user certificate]: Put a check in t he box to activate user certificate. Then select certi ficate from the pull down m e nu. [Validate server certificate]: Put a check in the box to activate server certificate. Then select the certificate authority from the pull down menu. [Server nam e ]: Name[...]

ZyXEL AG-200 User’s Guide Wireless Security 4-7 4.5.4 Configuring 802.1x – EAP-TLS 1. Enter in uni q u e User ID an d Passw or d under [User Information] . 2. TLS requires you to conf igure both a server and user 7 certificate. 3. Click [Config certificate]. T h e followi n g wi nd ow appea rs: 7 You must fi rst have a wire d connection t o a n[...]

ZyXEL AG-200 User’s Guide 4-8 Wireless Security [Use user certificate]: Put a check in t he box to activate user certificate. Then select certi ficate from the pull down m e nu. [Validate server certificate]: Put a check in the box to activate server certificate. Then select the certificate authority from the pull down menu. [Server nam e ]: Name[...]

ZyXEL AG-200 User’s Guide Wireless Security 4-9 4.5.5 Configuring 802.1x – EAP-TTLS 1. Enter in uni q u e User ID an d Passw or d under [User Information] . 2. Select inne r TTLS protoc ol. You can choo se between [P AP], [CHAP], [MS-CH AP], [MS-CHAP v2], or [M D5-Challe nge]. 3. Click [OK] to finish and return to the previous screen. 4. Click [...]

ZyXEL AG-200 User’s Guide 4-10 Wireless Security [Use user certificate]: Put a check in t he box to activate user certificate. Then select certi ficate from the pull down m e nu. [Validate server certificate]: Put a check in the box to activate server certificate. Then select the certificate authority from the pull down menu. [Server nam e ]: Nam[...]

ZyXEL AG-200 User’s Guide Troubleshooting 5-1 Chapter 5 Troubleshooting This chapter covers pote ntial problems and possib le rem edies. After each problem descriptio n , some instructions are pro vi ded to help you diagnose and solve the problem. 5.1 Problems S t arting the ZyXEL Utility Program Table 5-1 Troubleshooting Starting ZyXEL Utility P[...]

ZyXEL AG-200 User’s Guide 5-2 Troublesho oting 5.3 Problems Communicating With Other Computers Table 5-3 Troubleshooting Communi cation Problems PROBLEM CORRECTIVE ACTION The ZyXEL AG-200 computer cannot communicate with the other computer. Make sure you are connected to the net work. A. Infrastructure Make sure that the AP and the associated com[...]

ZyXEL AG-200 User’s Guide Appendix A i Appendix A T ypes of EAP Authentication This appendix discusses th e five popular EAP authentication types: EAP -MD5 , EAP-TLS , EAP-TTLS , PEAP and LEAP . The type o f authenticat ion you use de pends on the RADI US server. Cons ult your network adm inistrator for mor e informat ion. EAP-MD5 (Message-Digest[...]

ZyXEL AG-200 User’s Guide ii Appendix A LEAP LEAP (Light weight E xtensibl e Authenti cation Prot ocol) is a Cisco im plementati on of IEEE802.1x. For added sec urity, certificat e-based authent ications (E AP-TLS, EAP-TTLS a n d PEAP) use dynamic key s for data enc ryption. They are often deployed in corporate e nvironm ents, but for p ublic dep[...]