WPA - WiFi Protected Access

Introduction to WPA

WPA (WiFi protected Access) WiFi network security solution offered by the WiFi Alliance, in order to fill gaps in WEP.

WPA - WiFi Protected Access

WPA is a "light" version of the 802.11i protocol, which relies on authentication protocols and a strong encryption algorithm: TKIP (Temporary Key Integrity Protocol). TKIP generates keys randomly and can alter an encryption key several times a second, for greater security.

WPA requires installing an authentication server (most commonly a RADIUS server), which identifies users on a network and sets their access privileges. Nonetheless, small networks can make use of a simpler version of WPA, called WPA-PSK, by deploying the same encryption key on all devices, which eliminates the need for a RADIUS server.

WPA (in its first build) only supports networks in infrastructure mode, which means it cannot be used to secure wireless peer-to-peer networks (ad hoc mode).

Ask a question
CCM is a leading international tech website. Our content is written in collaboration with IT experts, under the direction of Jeff Pillou, founder of CCM.net. CCM reaches more than 50 million unique visitors per month and is available in 11 languages.
This document, titled « WPA - WiFi Protected Access », is available under the Creative Commons license. Any copy, reuse, or modification of the content should be sufficiently credited to CCM (ccm.net).