Mô tả : The WPA standard is a subset of the 802.11i wireless security standard intended to address the cryptographic shortcomings of Wired Equivalent Protocol (WEP).

WPA comes in two forms: per-user based security designed for enterprises, and a pre-shared key mode designed for consumers. While the former utilizes a RADIUS server to ensure per user keying, the latter greatly simplifies deployment for home and SOHO users by having a
master key (based on a pass phrase) for the wireless LAN. WPA and 802.11i are necessary because WEP has known weaknesses, poor key manageability, and lacks simplicity needed among home users for deployment.