ZyXEL NWD2105 manual

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Table of contents for the manual

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    www .zyxel.com www .zyxel.com NWD2105 Wireless N-lite USB Adapter Copyright © 2010 ZyXEL Communications Corporation Ve r s i o n 1 . 0 Edition 1, 05/2010[...]

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    [...]

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    About This User's Guide NWD2105 User’s Guide 3 About This User's Guide Intended Audience This manual is intended for people wh o want to configure the NWD2105 using the Z yXEL utility . Tip s for Reading User ’ s Guides On-Screen When reading a Zy XEL User’s Guide On -Screen, k eep the following in mind: • If you don’ t alre ady[...]

  • Page 4

    About This User's Guide NWD2105 User’s Guide 4 Thank you! The T echnical W riting T eam, ZyXEL Communications Corp. , 6 Innovat ion Road II, Science-Based Industrial P ark, Hsinchu, 30099, T aiwan. Need More Help? More help is av ailable at www.zyx el.com. • Download Library Search for the latest produc t updates an d documentation from th[...]

  • Page 5

    Document Conventions NWD2105 User’s Guide 5 Document Conventions W arnings and Notes These are how warnings and notes are shown in this User’ s Guide. W arnings tell you about things that could harm you or your NWD2105. Note: Notes tell you other import ant informat ion (for example, other things you may need to configure or help ful tips) or r[...]

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    Document Conventions NWD2105 User’s Guide 6 Icons Used in Figures Figures in this User’s Guide ma y use the following generic icons. Wireless Access Point Computer Notebook computer Server Modem Te l e p h o n e Internet Wireless Signal[...]

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    Safety Warnings NWD2105 User’s Guide 7 Safety Warnings • Do NO T use this product near water , for exam ple, in a wet basement or near a swimming pool. • Do NO T expose your device to dampness, dust or corrosive liquids. • Do NO T store things on the device. • Do NOT install, use, or service this device during a thunderstorm. There is a r[...]

  • Page 8

    Safety Warnings NWD2105 User’s Guide 8[...]

  • Page 9

    Contents Overview NWD2105 User’s Guide 9 Contents Overview Introduction and Configuration .................................................... ........................................ 17 Getting S tarted ................ ............. ................ ................. ............. ................ ................ .... ............ 19 Wireless [...]

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    Contents Overview NWD2105 User’s Guide 10[...]

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    Table of Contents NWD2105 User’s Guide 11 Table of Contents About This User's Guide ................................................................ ........................................ .. 3 Document Conventions.................................................................. ......................................... .5 Safety Warnings [...]

  • Page 12

    Table of Contents NWD2105 User’s Guide 12 3.1.1 What Y ou Can Do in This Chapter ...... ... ................ ............. ................ ............. .......... 33 3.1.2 What Y ou Need to Know ........... ............. ................ ................ ............. ................ ....... 33 3.1.3 Before Y ou Begin ................... .....[...]

  • Page 13

    NWD2105 User’s Guide 13 C HAPTER 1 Getting Started 1.1 Overview The Z yXEL NWD2105 Wireless N-lit e USB Adapter brings you a bet ter Internet experience over existing IEEE 802.11 b/g/n networks. With data r ates of up to 150 Mbps, you can enjoy a b reathtaking high-speed connection at home or in the office. It is an excell ent solution for daily [...]

  • Page 14

    Chapter 1 Getting Star ted NWD2105 User’s Guide 14 1.2 Features Y our NWD2105 is an IEEE 802.11n draft 2. 0 compl iant wireless LAN adapter . It can also connect to IEEE 802.11b/g wire less networks. The NWD2105 i s WPS (Wi- Fi Protected Setup) compliant. WPS a llows you to easily set up a secure connection with another WPS-enabled devic e. The N[...]

  • Page 15

    Chapter 1 Getting Started NWD2105 User’s Guide 15 1.3 Hardware Inst allation This sections shows y ou how to install y our NWD2105. 1 Locate an av ailable USB port on the computer . 2 Remo ve the protectiv e cap to expose the USB connector . Insert the NWD2105 into an av ailable USB port on the computer . The NWD2105’ s LED (light) turns on if [...]

  • Page 16

    Chapter 1 Getting Star ted NWD2105 User’s Guide 16 1.4.2 Inst alling the ZyXEL Utility T o install the Z yXEL Utility: 1 Make sure the NWD2105 is disconnected from y our computer before you begin the installation process. 2 Open the ZyXEL_USB.dmg file on the included disc. 3 Inside the ZyXEL_USB.dmg , open the folder for yo ur version of Mac OS X[...]

  • Page 17

    Chapter 1 Getting Started NWD2105 User’s Guide 17 4 Double-click the USBWireless-Leopard.pkg to run the installation prog ram. When it opens, follow th e on-screen instructions. 5 After installing the Z yXEL Utility and device driv er , you must restart your computer . 6 Once your computer restarts, you can find the Z yXEL Utility in your Applica[...]

  • Page 18

    Chapter 1 Getting Star ted NWD2105 User’s Guide 18 1.4.2.1 Uninst alling the ZyXEL Utility While you c an drag the Z yXEL Utility from your Applications folder direct ly to the Trash and remove it that way , the best and safest course of action is to run the uninstallation progr am bundled on the included disc. This ensures that all components of[...]

  • Page 19

    Chapter 1 Getting Started NWD2105 User’s Guide 19 1.5 Device Applications This section describes some network appl icat ions for the NWD2105. Y ou can either set the network type to Infrastructure and connect to an AP or use Ad-Hoc mode and connect to a peer computer (ano ther wireless devi ce in Ad-Hoc mode). Infrastructure T o connect to a netw[...]

  • Page 20

    Chapter 1 Getting Star ted NWD2105 User’s Guide 20 Ad-Hoc T o set up a small independent wire less workgroup without an AP , use Ad-Hoc . Ad-Hoc does not require an AP or a wired ne twork. T wo or more wireless client s communicate directly with each other . Note: Wi-Fi Protected Setup (WPS) is not available in ad-hoc mode. Figure 3 Application: [...]

  • Page 21

    NWD2105 User’s Guide 21 C HAPTER 2 Wireless LANs 2.1 Overview This section provi des background inform ation on wireless Loca l Area Network s. 2.1.1 What Y ou Can Do in This Section • Connect securely to an AP using ma ny of the strongest and most common encryption protocols. See Section 2.3 on page 23 for detail s. • Connect securely either[...]

  • Page 22

    Chapter 2 Wireless LANs NWD2105 User’s Guide 22 Encryption The process of taking data and encoding it, usually using a mathematical formula, so that it becomes unreada ble unl ess dec rypted with th e proper code or pass phrase. 2.1.3 Before Y ou Begin • Y ou should have v alid login informatio n for an exi sting network Access P oint, otherwis[...]

  • Page 23

    Chapter 2 Wirel ess LANs NWD2105 User’s Guide 23 • If two wireless networks overl ap, th ey should use a different channel. Like radio stations or television channels , each wireless net work uses a specific channel, or frequency , to send and receive information. • Every devi ce in the same wireless network mus t use security compatible with[...]

  • Page 24

    Chapter 2 Wireless LANs NWD2105 User’s Guide 24 • Automatic WEP k ey generation based on a “password phr ase” called a passphr ase. The passphrase i s case sensitiv e. Y ou must use the same passphrase for all WLAN adapters wi th this fe ature in the sa me WLAN . For WL AN adapters without the passphr ase feature, you can still take advanta[...]

  • Page 25

    Chapter 2 Wirel ess LANs NWD2105 User’s Guide 25 For EAP- TLS authentication type, you must first have a wired connec tion to the network and obtai n the certificate (s) from a certificate authorit y (CA). Certificates (also called digital IDs) can be used to authenticate users and a CA issues certificates and guarantees the id entity of each cer[...]

  • Page 26

    Chapter 2 Wireless LANs NWD2105 User’s Guide 26 Depending on the de vices you have, you can either press a button (on the device itself , or in its configuration utility) or en ter a PIN (a unique P ersonal Identification Number that allows one device to authen ticate the other) in each of the tw o devices. When WPS is activ ated on a devi ce, it[...]

  • Page 27

    Chapter 2 Wirel ess LANs NWD2105 User’s Guide 27 When you use the PIN method, you must en ter the PIN from on e device (usually the wireless client) into the second devi ce (usually the Access P oint or wireless router). Then, when WPS is activ ated on th e first de vice, it p resents it s PIN to th e second device. If the PIN matches, one device[...]

  • Page 28

    Chapter 2 Wireless LANs NWD2105 User’s Guide 28 The following figure shows a WPS-enab led wi reless c lient (ins talled in a note book computer) connecting to the WPS- enabled AP via the PIN method. Figure 5 Example WPS Process: PIN Method 2.4.3 How WPS W orks When two WPS-enabled devices connect, each device must assume a specific role. One devi[...]

  • Page 29

    Chapter 2 Wirel ess LANs NWD2105 User’s Guide 29 already part of a network, it sends the existing information. If not , it generates the SSID and WP A(2)-PSK randomly . The following figure sh ows a WPS-enable d client (installed in a notebook computer) connecting to a WPS-enabled access point. Figure 6 How WPS works The roles of registrar and en[...]

  • Page 30

    Chapter 2 Wireless LANs NWD2105 User’s Guide 30 subsequent WPS connections in which it is involv ed. If you want a configured AP to act as an enrollee, y ou must reset it to its f actory defaults. 2.4.3.1 Example WPS Network Setup This section shows how security settings are distri buted in an example WPS setup. The following figure shows an exam[...]

  • Page 31

    Chapter 2 Wirel ess LANs NWD2105 User’s Guide 31 In step 3, you add anot her access point ( AP2 ) to your network. AP2 is out of ran g e of AP1 , so you cannot use AP1 for the WPS handshake with the new access point. However , you know that Client 2 supports the registrar function, so you use it to perform the WPS handshak e instead. Figure 9 WPS[...]

  • Page 32

    Chapter 2 Wireless LANs NWD2105 User’s Guide 32 • WPS works only with ot her WPS- enabled devices. However , you can still add non- WPS devices to a network yo u already set up using WPS. WPS works by automatically issuing a r andomly-gener ated WPA -PSK or WPA2- PSK pre-shared key from the registr ar de vice to the enrollee d evices. Whether t[...]

  • Page 33

    NWD2105 User’s Guide 33 C HAPTER 3 ZyXEL Utility - Mac OS X 3.1 Overview This chapter shows you how t o use the Z yXEL utility to configure your NWD2105 using the Macintosh operating system, Mac OS X. 3.1.1 What Y ou Can Do in This Chapter •T h e Profile screen ( Section 3.3 on page 35 ) lets you cr eate, delete an d man age your wirel ess netw[...]

  • Page 34

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 34 Wi-Fi Protected Access (WP A) The WP A protocol affords users with vastly stronger securit y than WEP . It comes in two different varieties: WPA and WP A2. Alwa ys try to use WPA2 as it implements the full version of the security st andard and W PA does not. Pre-Shared Key (PSK) A pre-sha[...]

  • Page 35

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 35 3.3 The Profile Screen This screen allows you t o configure and manage wireless profiles. Figure 1 1 ZyXEL Utility: Profile Site Survey Use this screen to: • scan for a wireless network • configure wireless security (if activated on the selected network) • connect to a wireless netw[...]

  • Page 36

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 36 The following table describes t he labels in this screen. T able 4 ZyXEL Utility: Profile LABEL DESCRIPTION This icon indicates the currently active profile. Profile This is the name of the pre-configured profile. SSID This is the SSID of the wireless network to which the selected profile[...]

  • Page 37

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 37 3.4 The Profile - System Configuration Screen This screen allows you t o configure system and network setting s for your NWD2105. Figure 12 ZyXEL Utility: Pro file - System Configuration The following table describes t he labels in this screen. T able 5 ZyXEL Utility: Profile - System Con[...]

  • Page 38

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 38 3.5 The Profile - Authentication and Security Screen This screen allows you to configur e security settings on y our NWD2105. Figure 13 ZyXEL Utility: Pro file - Authentication and Security Channel In ad-hoc mode, choose the radio channel to use for the wireless network. If there are othe[...]

  • Page 39

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 39 The following table describes t he labels in this screen. T able 6 ZyXEL Utility: Profile - Authentication an d Security LABEL DESCRIPTION Authentication Ty p e Select the security standard you want to use. All the other wireless devices on your network must be able to use the same standa[...]

  • Page 40

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 40 3.6 The Link S t atus Screen This screen allows you t o view the stat us of the NWD2105’ s wireless connection with an AP or peer computer . Figure 14 ZyXEL Utility: Link S tatus The following table describes t he labels in this screen. T able 7 ZyXEL Utility: Link Status LABEL DESCRIPT[...]

  • Page 41

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 41 3.7 The Site Survey Screen This screen allows you to view a vailable networks and connect to a network. Figure 15 ZyXEL Utility: Site Survey Signal Strength 1 This shows the strength of the antenna’ s signal. The signal strength depends mainly on the antenna output power and the distanc[...]

  • Page 42

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 42 The following table describes t he labels in this screen. T able 8 ZyXEL Utility: Site Surve y LABEL DESCRIPTION This indicates a connection to the associated AP . SSID This displays the network’ s Service Set IDentifier . The SSID is the name of the network. BSSID This displays the Bas[...]

  • Page 43

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 43 3.8 The S t atistics Screen This screen allows you to view statisti cs on network tr affic between the NWD2105 and the associat ed AP or peer com puter . This scre en is primarily for troubleshooting purposes. Figure 16 ZyXEL Utility: S tatistics The following table describes t he labels [...]

  • Page 44

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 44 Frames F ailed to Rec e i v e A C K After All Ret r i e s This displays the number of fr ames transmitted by the NWD2105 that did not receive an acknowledgement response from the other wireless device. RT S F ra m e s Successfully Rec e i v e d CTS This displays the number of fr ames, lar[...]

  • Page 45

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 45 3.9 The Advanced Screen This screen allows y ou to configure adva nced network sett ings on your NWD2105. Figure 17 ZyXEL Utility: Ad vanced The following table describes t he labels in this screen. T able 10 ZyXEL Utility: Advanced LABEL DESCRIPTION Wireless Mode This indicates the NWD21[...]

  • Page 46

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 46 3.10 The WPS Screen This screen allows you t o configure the NWD2105’ s Wi-Fi Protected Security (WPS). Figure 18 ZyXEL Utility: WPS The following table describes t he labels in this screen. T able 1 1 ZyXEL Utility: WPS LABEL DESCRIPTION WPS AP List This displays a list of WPS- compati[...]

  • Page 47

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 47 Profile This field indicates the profile name. Profiles created on the fly are named Profile# where # is a number . For examp le, Profile1. SSID This field indicates your profile’s unique S SID. Authenticati on This field indicates the authentication type required by your NWD2105 while [...]

  • Page 48

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 48 3.10.1 The Information Screen While in the WPS screen, y ou can view information about any AP in the WPS AP List . Click the Info rmation button. The following screen displays. Figure 19 ZyXEL Utility: WPS - Information PBC Click this button to make a PBC -base d WPS connection. For detai[...]

  • Page 49

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 49 The following table describes t he labels in this screen. 3.10.2 The Profile Det ails Screen While in the WPS screen, y ou can view information about any profile in the WPS Profile List . Click the Profile Details button. The following screen di splays. Figure 20 ZyXEL Utility: WPS - Prof[...]

  • Page 50

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 50 The following table describes t he labels in this screen. T able 13 Mac OS X: WPS - Profile Details LABEL DESCRIPTION SSID This field indicates the automatically generated S SID used for your current WPS session. Y ou can also edit it. Enter up to 32 standard English alphanumeric characte[...]

  • Page 51

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 51 3.1 1 The About Screen This screen shows you the driver , utility version, and MAC address of your NWD2105. Figure 21 ZyXEL Utility: Ab out The following table describes t he labels in this screen. T able 14 Mac OS X: About LABEL DESCRIPTION Wireless Utility This section displays the vers[...]

  • Page 52

    Chapter 3 ZyXEL Utility - Mac OS X NWD2105 User’s Guide 52[...]

  • Page 53

    NWD2105 User’s Guide 53 C HAPTER 4 Troubleshooting 4.1 Overview This chapter offers some suggesti ons to solve problems you mi ght encounter . The potential problems are divided into the following categories . • P ower , Hardware Connections, and LEDs • Accessing the ZyXEL Utility • Link Quality • Problems Communicating with Other Compute[...]

  • Page 54

    Chapter 4 Troub leshooting NWD2105 User’s Guide 54 4 If the problem continues, contac t the vendor . 4.3 Accessing the ZyXEL Utility I cannot access t he ZyXEL Utility 1 Make sure the NWD2105 is properly inserted and the LEDs are on. 2 Install the NWD2105 on another computer . 3 If the error persists, you may have a hard w are problem. In this ca[...]

  • Page 55

    Chapter 4 Troubleshooting NWD2105 User’s Guide 55 4.5 Problems Communicating with Other Computers The computer with the NWD2105 install ed cannot communicat e with the other computer(s). In Infr astructure Mode • Make sure that the AP and the associat ed computers are turned on and working properly . • Make sure the NWD2105 computer and the a[...]

  • Page 56

    Chapter 4 Troub leshooting NWD2105 User’s Guide 56[...]

  • Page 57

    NWD2105 User’s Guide 57 C HAPTER 5 Product Specifications T able 15 Product Specifications PHYSICAL AND ENVIRONMENTAL Product Name NWD2105 Wireless N-lite USB Adapter Interface USB 2.0 Standards IEEE 802.11b IEEE 802.11g IEEE 802.11n Operating Frequency 2.4GHZ Antenna T ype Chip Operating T emperature 0 - 50 degrees Celsius Storage T emperature -[...]

  • Page 58

    Chapter 5 Produ ct Specifications NWD2105 User’s Guide 58 Tr a n s m i t P o w e r (+/- 1.5 dB) 802.11b: 1/2/5.5/11M: 18.5 dBm 802.11g: 54/48M: 15dBm 24/36M: 15dBm 12/18M: 16dBm 6/9M: 16.5 dBm 802.11n: @ HT20 MCS0~MCS07: 15.5 dBm @ HT40 MCS0~MCS07: 15.5 dBm Re ceiver Sensitivity 802.11b: 11Mbps at -82dBm 802.11g: 54Mbps at -68dBm 802.11n: HT20 at[...]

  • Page 59

    Chapter 5 Product Sp ecifications NWD2105 User’s Guide 59 Operation Channels N. America & T aiwan HT20 2.412GHz~ 2.462GHz 1-11 N. America & T aiwan HT40 2.422GHz~ 2.452GHz 3-9 Euro ETSI HT20 2.412GHz~ 2.472GHz 1-13 Euro ETSI HT40 2.422GHz~ 2.462GHz 3-11 Networking Mode Infrastructure, Ad-Hoc, SoftAP Support Approv als Safety European Unio[...]

  • Page 60

    Chapter 5 Produ ct Specifications NWD2105 User’s Guide 60 Wireless QoS Wi-Fi Multi Media (WMM) Wi-Fi Protected Setup (WPS) Push button configuration Use device's PIN Use AP or Router's PIN Other WMM power-sa ving support Compatible with Windows Zero Configur ation T able 15 Product Specifications (continued)[...]

  • Page 61

    NWD2105 User’s Guide 61 A PPENDIX A W ireless LANs This appendix discusses ad-hoc and in frastructure wireless LAN topologies. Ad-hoc Wireless LAN Configuration The simplest WLAN configur ation is an in dependent (Ad-hoc) WLAN that connects a set of computers with wireless adapters (A, B , C). Any time t wo or more wireless adapters are within ra[...]

  • Page 62

    Appendix A Wireless LANs NWD2105 User’s Guide 62 BSS A Basic Service Set (BS S) exists when all communications between wireless clients or between a wireless client and a wired network client go through one access point (AP). Intra-BS S traffic is traffic between wirele ss clients in the BS S. When Intra-BS S is enabled, wireless client A and B c[...]

  • Page 63

    Appendix A Wir eless LANs NWD2105 User’s Guide 63 ESS An Extended Service Set (ESS) c onsists of a series of overlapping BS Ss, each containing an access point, with each ac cess point connected together by a wired network. This wired connec tion between AP s is called a Distribution S ystem (DS). This type of wi reless LAN topology is called an [...]

  • Page 64

    Appendix A Wireless LANs NWD2105 User’s Guide 64 adjacent AP is using. F or example, if yo ur region has 11 channels and an adjacent AP is using channel 1, then y ou need to select a channel between 6 or 11. RTS/CTS A hidden node occurs when two stations are within r ange of the same access point, but are not within ra nge of each other . The fol[...]

  • Page 65

    Appendix A Wir eless LANs NWD2105 User’s Guide 65 If the RTS/CTS v alue is greater than the Fragmentation Threshold value (see next), then the RTS (R equest T o Send)/ CTS (Clear to Send) h andshake wi ll never occur as data frames will be fragmented be fore they reach RTS/CTS si ze. Note: Enabling the R TS Threshold causes redundant network over[...]

  • Page 66

    Appendix A Wireless LANs NWD2105 User’s Guide 66 IEEE 802.1 1g Wireless LAN IEEE 802.11g is fully compatible with th e IEEE 802.11b standard. This means an IEEE 802.11b adapter can interface directly with an IEEE 802.11g acc ess point (and vice versa) at 11 Mbps o r lowe r depe nding on range. IEEE 802.11g has sever al intermediate rate steps bet[...]

  • Page 67

    Appendix A Wir eless LANs NWD2105 User’s Guide 67 Note: Y ou must enable the same wireless security settings on the NWD2105 and on all wireless clients that you want t o associate with it. IEEE 802.1x In June 2001, the IEEE 802.1x standard w a s designed to extend the features of IEEE 802.11 to support extended authentica tion as well as providin[...]

  • Page 68

    Appendix A Wireless LANs NWD2105 User’s Guide 68 • Access-R eject Sent by a RADIUS server rejecting access. • Access- Accept Sent by a RADIUS server allo wing access. • Access-Chal lenge Sent by a RADIUS server requesting more information in order to allow access. The access point sends a proper response from the user and then sends another[...]

  • Page 69

    Appendix A Wir eless LANs NWD2105 User’s Guide 69 EAP-MD5 (Message-Dig est Algorithm 5) MD5 authen tication is the si mplest one-way authentic ation meth od. The authentication server sends a challenge to the wireless client. The wireless client ‘proves’ t hat it knows the password by en crypting the password with the challenge and sends back[...]

  • Page 70

    Appendix A Wireless LANs NWD2105 User’s Guide 70 LEAP LEAP (Lightweight Extensible Authenticati on Protocol) is a Cisco implementation of IEEE 802.1x. Dynamic WEP Key Exchange The AP maps a unique key that is generated with t he RADIUS server . This key expires when the wireless connection ti me s out, disconnec ts or reauthentication times out. [...]

  • Page 71

    Appendix A Wir eless LANs NWD2105 User’s Guide 71 If both an AP and the wireless clients support WPA2 and you have an external RADIUS server , use WPA2 for stronger data encryption. If you don't have an external RADIUS server , you should use WP A2-PSK (WP A2-Pre-Shared K ey) that only requires a single (identical) password entered into each[...]

  • Page 72

    Appendix A Wireless LANs NWD2105 User’s Guide 72 The encryption mech anisms used for WPA(2) and WP A(2)-PSK are the same. The only difference between the two is th at WPA(2)-PSK us es a simple common password, instead of user -specific credentials. The common- password approach makes WP A(2)-PSK susceptible to brute-fo rce password-guessing attac[...]

  • Page 73

    Appendix A Wir eless LANs NWD2105 User’s Guide 73 2 The RADIUS server then chec ks the user's identif ication against i ts database and grants or deni es netw ork access accordingly . 3 A 256-bit P airwise Master K ey (PMK) is deri ved from the authentication process by the RADIUS server and the client. 4 The RADIUS server distributes the PM[...]

  • Page 74

    Appendix A Wireless LANs NWD2105 User’s Guide 74 4 The AP and wireless clients use the TKIP or AES encryption process, the PMK and information exchanged in a handshake to create tempor al encryption keys. They use these keys to encrypt data exchanged between them. Figure 27 WP A(2)-PSK Authentication Security Parameters Summary Re fer to this tab[...]

  • Page 75

    Appendix A Wir eless LANs NWD2105 User’s Guide 75 Antenna Overview An antenna couples RF signals onto air . A tr ansmitter within a wireless device sends an RF signal to the antenna, whic h propagates the signal through the air . The antenna also operates in reverse by capturing RF signals from the air . P ositioning the antennas properly increa [...]

  • Page 76

    Appendix A Wireless LANs NWD2105 User’s Guide 76 • Omni-directional ante nnas send the RF sign al out in all directions on a horiz ontal plane. The cover age area is torus-sh aped (like a donut) which makes these antennas ideal for a room environment. With a wide cove rage area, it is possible to make circular ov erlapping covera ge areas with [...]

  • Page 77

    NWD2105 User’s Guide 77 A PPENDIX B Legal Information Copyright Copyright © 2010 by Z yXEL Communications Corporation. The contents of this publication ma y not be reproduced in any p art or as a whole, transcrib ed, stored in a retriev al syst em, tr anslated into any la nguage, or transmitted in an y form or by any me ans, electronic, mechanic[...]

  • Page 78

    Appendix B Legal In formation NWD2105 User’s Guide 78 This device has been tested and found to comply with the limits for a Clas s B digital device pursuant to P art 15 of th e FCC Rules. These limi ts are designed to provide reasonable protection against harmful interference in a residential installation. This device gener ates, uses , and can r[...]

  • Page 79

    Appendix B Legal Information NWD2105 User’s Guide 79 Industry Canada St atement This device complies with RSS-210 of the Industry Canada R ules. Oper ation is subject to the following two conditions: 1) this device may not cause in terference and 2) this device must accept any interferen ce, including interfer ence that may cause undesired oper a[...]

  • Page 80

    Appendix B Legal In formation NWD2105 User’s Guide 80 This Class B digital appar atus complies with Canadian ICES-003. Oper ation is subject to the following two conditio ns: (1) this device may not c ause interference, and (2) this devi ce must accept any interference, including interference that may cause undesi red operation of the device. Cet[...]

  • Page 81

    Appendix B Legal Information NWD2105 User’s Guide 81 Registration Re gister your product online t o receive e-mail notices of fi rmware upgr ades and information at www.zyxel.com.[...]

  • Page 82

    Appendix B Legal In formation NWD2105 User’s Guide 82[...]

  • Page 83

    Index NWD2105 User’s Guide 83 Index A about your Z yXEL Device 14 Access Point (AP) 22 Access point (AP) 22 Access Point. See also AP . ACT LED 14 Ad-Hoc 20 Advanced Encryption Standard 25 See AES. AES 71 antenna directional 76 gain 75 omni-directional 76 AP 63 See also access point. authentication type 24 auto 24 open system 24 shared key 24 aut[...]

  • Page 84

    Index NWD2105 User’s Guide 84 H hidden node 64 humidity 57 I IBSS 61 IEEE 802.11g 66 IEEE 802.1x 24 Independent Basic Service Set See IBSS 61 infrastructure 19 Initialization V ector (IV) 71 interface 57 Internet access 19 L LEDs 14 lights 14 LINK LED 14 M Message Integrity Check (MIC) 25 , 71 N network overlap 23 P Pairwise Master K ey (PMK) 71 [...]

  • Page 85

    Index NWD2105 User’s Guide 85 W warranty 80 note 80 weight 57 WEP 23 automatic setup 24 manual setup 24 passphrase 24 WEP (Wired Equivalent Priv acy) 23 WEP key generation 24 Wi-Fi Protected Access 25 , 70 wireless client 22 wireless client WPA supplicants 72 wireless LAN introduction 21 security 23 wireless LAN (WLAN) 21 wireless network 22 wire[...]

  • Page 86

    Index NWD2105 User’s Guide 86[...]