NETGEAR WPN111 user manual WEP Overview, WEP Authentication, 802.1x, Cisco Leap

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

802.1x

802.1x defines port-based, network access control used to provide authenticated network access and automated data encryption key management.

Cisco LEAP

Light Extensible Authentication Protocol (LEAP) is a proprietary 802.1x EAP method developed by Cisco for use on wireless networks that use Cisco 802.11 wireless devices. It features dynamic per user per session WEP keys.

These security technologies are discussed below.

WEP Overview

The absence of a physical connection between nodes makes the wireless links vulnerable to eavesdropping and information theft. To provide a certain level of security, the IEEE 802.11 standard has defined two types of authentication methods, Open System and Shared Key. With Open System authentication, a wireless PC can join any network and receive any messages that are not encrypted. With Shared Key authentication, only those PCs that possess the correct authentication key can join the network. By default, IEEE 802.11 wireless devices operate in an Open System network. Recently, Wi-Fi, the Wireless Ethernet Compatibility Alliance  (http://www.wi-fi.net) developed the Wi-Fi Protected Access (WPA), a new strongly enhanced Wi-Fi security. WPA will soon be incorporated into the IEEE 802.11 standard. WEP and WPA are discussed below.

WEP Authentication

An access point must authenticate a station before the station can associate with the access point or communicate with the network. The IEEE 802.11 standard defines two types of WEP authentication: Open System and Shared Key.

Open System Authentication allows any device to join the network, assuming that the device SSID matches the access point SSID. Alternatively, the device can use the “ANY” SSID option to associate with any available access point within range, regardless of its SSID.

Shared Key Authentication requires that the station and the access point have the same WEP Key to authenticate. These two authentication procedures are described below.

The WEP Open System authentication process is illustrated in below.

W ire le ss N e tworkin g B a sics

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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 About the WPN111 Key FeaturesChapter Introduction What’s in the Box? Road Map for ‘How to Get There From Here’Wire le ss On n e ct to a E n tify th e Wire le ss n e tworkWire le ss n etwork To le a rn a b ou t wire le ssVe rify m y n e twork Ca b le or D S L se rvice Twork Ctiva te m yCon n e ction Rovid e rs For you r ve rsion of W in d ows Rowse r su ch a sTwork Con n e ct to th e wire le ss Wire d n etwork Wire le ss a n dE P C I a m u sin g to Igh b orh oodCom b in e d Wire le ss a n d Com p u te r su p p ort grou p sTwork n e e d s to b e D P rin t S h a rin gVerifying System Requirements Chapter Basic SetupWhat You Need Before You Begin Observing Location and Range Guidelines Two Basic Operating ModesBasic Installation Instructions WPN111 Default Wireless Configuration SettingsSta llS h ie ld W iza rd For Windows XP Users Installing a WPN111Click Install Driver and Utility Ort, you V1 typ eIs 1 4 M b p s wh e re a s th e With a W in d ows X P L ogo te stin gSte 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 WPN111Ort is 4 8 0 M b p s N 1 1 1 S yste m Tra y I con Ou n d N e w H a rd wa re W iza rdSp e e d is 1 Tility Or re se t WPN111 Wireless Connection IndicatorsInterpreting the LED on the WPN111 Interpreting System Tray Icon Colors Using Configuration Profiles Chapter ConfigurationUnderstanding the Configuration Options Run the WPN111 Configuration Utility Connecting to an Access Point in Infrastructure ModeHow to Configure an Infrastructure Mode Profile Save your settings in a Profile Configure the wireless Network settingsVerify wireless connectivity to your network Connecting to Another PC in Ad-hoc ModeHow to Configure an Ad-hoc Mode Profile 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 Infrastructure Mode Appendix B Wireless Networking BasicsWireless Networking Overview Wireless Channels Ad Hoc Mode Peer-to-Peer WorkgroupNetwork Name Extended Service Set Identification Essid 802.11b/g Wireless Channels For U S Re qu e n cy G H z 5 5 2 5 5 2For C a n a d a W for E u rop eWPN111 user can use thirteen channels in non-turbomode 160 Wireless Security Overview152 WEP Overview WEP Authentication802.1x Cisco LeapAuthentication 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 Michael WPA Data Encryption Key ManagementTemporal Key Integrity Protocol Tkip AES Support Is WPA Perfect?Product Support for WPA Wireless network adapters Wireless client programs 202-10076-01 Configuring Windows 98 and Me for TCP/IP Networking Appendix C Preparing Your PCs for Network AccessInstall or Verify Windows Networking Components Preparing Your Computers for TCP/IP NetworkingRe p a rin g Y ou r P C s for N e twork a cce ss Locate your Network Neighborhood icon Choose Settings, and then Control PanelEnabling Dhcp in Windows 98 and Me 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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