NETGEAR WPN111 user manual Figure B-6 WPA/802.1x Authentication Sequence

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User Manual for the NETGEAR RangeMax™ Wireless USB 2.0 Adapter WPN111

The supplicant in the station uses the authentication and cipher suite information contained in the information elements to decide which authentication method and cipher suite to use. For example, if the access point is using the Pre-shared key method then the supplicant need not authenticate using full-blown 802.1X. Rather, the supplicant must simply prove to the access point that it is in possession of the pre-shared key. If the supplicant detects that the service set does not contain a WPA information element then it knows it must use pre-WPA 802.1X authentication and key management in order to access the network.

Key management. WPA features a robust key generation/management system that integrates the authentication and data privacy functions. Keys are generated after successful authentication and through a subsequent 4-way handshake between the station and Access Point (AP).

Data Privacy (Encryption). Temporal Key Integrity Protocol (TKIP) is used to wrap WEP in sophisticated cryptographic and security techniques to overcome most of its weaknesses.

Data integrity. TKIP includes a message integrity code (MIC) at the end of each plaintext message to ensure messages are not being spoofed.

C lie n t with a W P A -e n a b le d wire le ss a d a p te r a n d 

su p p lica n t

F or e xa m p le , a  W P A -e n a b le d A P

F or e xa m p le , a  R A D I U S se rve r

1

2

3

4

6

5

7

Figure B-6: WPA/802.1x Authentication Sequence

W ire le ss N e tworkin g B a sics

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202-10076-01

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Contents NETGEAR, I n c Technical Support FCC Information to User Ta n d a rd s Teste d to C om p lyContents Troubleshooting Index Viii Audience, Scope, Conventions Chapter About This ManualHow to Print this Manual Key Features Chapter IntroductionAbout the WPN111 What’s in the Box? Road Map for ‘How to Get There From Here’To le a rn a b ou t wire le ss On n e ct to a E n tify th e Wire le ss n e tworkWire le ss Wire le ss n etworkRowse r su ch a s Ctiva te m yVe rify m y n e twork Ca b le or D S L se rvice Twork Con n e ction Rovid e rs For you r ve rsion of W in d owsIgh b orh ood Wire le ss a n dTwork Con n e ct to th e wire le ss Wire d n etwork E P C I a m u sin g toD P rin t S h a rin g Wire le ss a n d Com p u te r su p p ort grou p sCom b in e d Twork n e e d s to b eChapter Basic Setup What You Need Before You BeginVerifying System Requirements Observing Location and Range Guidelines Two Basic Operating ModesBasic Installation Instructions WPN111 Default Wireless Configuration SettingsFor Windows XP Users Installing a WPN111 Click Install Driver and UtilitySta llS h ie ld W iza rd With a W in d ows X P L ogo te stin g V1 typ eOrt, you Is 1 4 M b p s wh e re a s th eSte p s, click th e H e lp b u tton in th e W P N 1 1 Th e se202-10076-01 N 1 1 1 R e sou rce C D Sta llS h ie ld W iza rd For Windows 2000 Users Installing a WPN111Ou n d N e w H a rd wa re W iza rd Sp e e d is 1Ort is 4 8 0 M b p s N 1 1 1 S yste m Tra y I con Tility WPN111 Wireless Connection Indicators Interpreting the LED on the WPN111Or re se t Interpreting System Tray Icon Colors Chapter Configuration Understanding the Configuration OptionsUsing Configuration Profiles Connecting to an Access Point in Infrastructure Mode How to Configure an Infrastructure Mode ProfileRun the WPN111 Configuration Utility Save your settings in a Profile Configure the wireless Network settingsConnecting to Another PC in Ad-hoc Mode How to Configure an Ad-hoc Mode ProfileVerify wireless connectivity to your network Windows Run program dialog box Configure the PC network settingsPing test results How to Start a Computer-to-Computer Ad-Hoc NetworkEnabling Wireless Security Features Configure the Security settings How to Configure WEP Encryption SecurityHow to Configure WPA-PSK Encryption Security Advanced Security StatisticsAdvanced Settings Advanced Settings202-10076-01 Basic Tips Chapter TroubleshootingGeneral Questions Frequently Asked QuestionsNew Hardware Wizard appears after installation has completed Rou b le s h ootin g Appendix a Technical Specifications Ch n ica l S p e cifica tion s Appendix B Wireless Networking Basics Wireless Networking OverviewInfrastructure Mode Ad Hoc Mode Peer-to-Peer Workgroup Network Name Extended Service Set Identification EssidWireless Channels 802.11b/g Wireless Channels W for E u rop e Re qu e n cy G H z 5 5 2 5 5 2For U S For C a n a d aWPN111 user can use thirteen channels in non-turbomode Wireless Security Overview 152160 Cisco Leap WEP AuthenticationWEP Overview 802.1xAuthentication Open System Steps Bit WEP WEP KeysWEP Key Configuration How to Use WEP Parameters802.1x Port Based Network Access Control Figure B-4 802.1x authentication WPA Wireless Security How Does WPA Compare to WEP? How Does WPA Compare to Ieee 802.11i? What are the Key Features of WPA Security?Figure B-5 WPA Overview Figure B-6 WPA/802.1x Authentication Sequence 202-10076-01 WPA Data Encryption Key Management Temporal Key Integrity Protocol TkipMichael Is WPA Perfect? Product Support for WPAAES Support Wireless network adapters Wireless client programs 202-10076-01 Preparing Your Computers for TCP/IP Networking Appendix C Preparing Your PCs for Network AccessConfiguring Windows 98 and Me for TCP/IP Networking Install or Verify Windows Networking ComponentsRe p a rin g Y ou r P C s for N e twork a cce ss Choose Settings, and then Control Panel Enabling Dhcp in Windows 98 and MeLocate your Network Neighborhood icon Primary Network Logon is set to Windows logon Verifying TCP/IP Properties Selecting Windows’ Internet Access MethodConfiguring Windows 2000 or XP for TCP/IP Networking Dhcp Configuration of TCP/IP in Windows XP Dhcp Configuration of TCP/IP in Windows XP orTCP/IP details are presented on Support tab Verify that Obtain an IP address Dhcp Configuration of TCP/IP in WindowsObtain an IP address automatically is selected Verifying TCP/IP Properties for Windows XP or 202-10076-01 Glossary DSL Internet service provider Ssid Wins 202-10076-01 Numerics Index
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