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4 – Wireless Security

Page 30 Airborne Wireless LAN Node Module Data Book 100-8004-102G

Quatech, Inc. Confidential

Authentication Protocol (EAP), and features dynamic distribution and management of

session keys. A RADIUS server is required for this security standard.

 “IEEE 802.11i” refers to the IEEE security standard officially ratified in June 2004 as

part of the 802.11 family. 802.11i was tested and certified for interoperability by the Wi-Fi

Alliance. In addition to improved encryption, this standard contains the 802.1X standard,

improving key management and user authentication.

 “LEAP” refers to the Lightweight Extensible Authentication Protocol developed by

Cisco. LEAP provides username/password-based authentication between a wireless

client and a RADIUS server. It is one of several protocols used with the IEEE 802.1X

standard for LAN port access control.

 “PSK” refers to Pre-Shared Key and is used in authentication. This is a shared key

between the station and the AP and is entered as a passphrase.

 “RADIUS” refers to Remote Authentication Dial In User Service. A backend server

that performs authentication using Extensible Authentication Protocol (EAP). This server

is required by the IEEE 802.1X security standard.

 “Supplicant” refers to the entity being authenticated by the authenticator and desiring

access to the services of the authenticator.

 “TKIP” refers to Temporal Key Integrity Protocol and is used in encryption. TKIP is an

IEEE 802.11i standard and an enhancement to WEP security.

 “WLN”, “WLN Module”, or “Module” refers to the Airborne Wireless LAN Node

Module.

 “WPA” refers to Wi-Fi Protected Access. It addresses all known Wired Equivalent

Privacy (WEP) vulnerabilities. WPA uses RC4 for encryption and TKIP for key

management. It includes a message integrity mechanism commonly called Michael or

MIC.

 “WPA-LEAP” refers to “Wi-Fi Protected Access - Light Extensible Authentication

Protocol”, an implementation based on the IEEE 802.11i 2004 and IEEE 802.1X 2001

standards, which includes the LEAP protocol for initial key assignment.

 “WPA-PSK” refers to “Wi-Fi Protected Access - Pre-Shared Key”, an implementation

based on the IEEE 802.11i 2004 and IEEE 802.1X 2001 standards, where the PSK is

stored on the client.

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