Intel 3945ABG User Manual

Page 128

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WPA

Wi-Fi Protected Access (WPA) is a security enhancement that strongly

increases the level of data protection and access control to a wireless

network. WPA is an interim standard that will be replaced with the IEEE’s

802.11i standard upon its completion. WPA consists of RC4 and TKIP and

provides support for BSS (Infrastructure) mode only. (Not compatible with

WPA2.)

WPA2

Wi-Fi Protected Access 2 (WPA2). This is the second generation of WPA

that complies with the IEEE TGi specification. WPA2 consists of AES

encryption, pre-authentication and PMKID caching. It provides support for

BSS (Infrastructure) mode and IBSS (Ad hoc) mode. (Not compatible with

WPA.)

WPA-

Enterprise

Wi-Fi Protected Access-Enterprise applies to corporate users. A new

standards-based, interoperable security technology for wireless LAN

(subset of IEEE 802.11i draft standard) that encrypts data sent over radio

waves. WPA is a Wi-Fi standard that was designed to improve upon the

security features of WEP as follows:

Improved data encryption through the temporal key integrity

protocol (TKIP). TKIP scrambles the keys using a hashing algorithm

and, by adding an integrity-checking feature, ensures that the keys

have not been tampered with.

User authentication, which is generally missing in WEP, through the

extensible authentication protocol (EAP). WEP regulates access to a

wireless network based on a computer’s hardware-specific MAC

address, which is relatively simple to be sniffed out and stolen. EAP

is built on a more secure public-key encryption system to ensure

that only authorized network users can access the network.

WPA is an interim standard that will be replaced with the IEEE’s 802.11i

standard upon its completion.

WPA-Personal Wi-Fi Protected Access-Personal provides a level of security in the small

network or home environment.

WPA-PSK

Wi-Fi Protected Access-Pre-Shared Key (WPA-PSK) mode does not use an

authentication server. It can be used with the data encryption types WEP

or TKIP. WPA-PSK requires configuration of a pre-shared key (PSK). You

must enter a pass phrase or 64 hex characters for a Pre-Shared Key of

length 256-bits. The data encryption key is derived from the PSK.

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