is a more powerful security technology for Wi-Fi networks than WEP. It provides strong data protection by using encryption as well as strong access controls and user authentication. utilizes 128-bit encryption keys and dynamic session keys to ensure your wireless network’s privacy and enterprise security.
There are two basic forms of WPA:
• WPA Enterprise (requires a Radius server)
• WPA Personal (also known as )
Either can use TKIP or AES for encryption. Not all WPA hardware supports AES.
is basically an authentication mechanism in which users provide some form of credentials to verify that they should be allowed access to a network. This requires a single password entered into each WLAN node (Access Points, Wireless Routers, client adapters, bridges). As long as the passwords match, a client will be granted access to a WLAN.
Encryption mechanisms used for WPA and WPA-are the same. The only difference between the two is in WPA- , authentication is reduced to a simple common password, instead of user-specific credentials.
The Pre-Shared Key (PSK) mode of WPA is considered vulnerable to the same risks as any other shared password system – dictionary attacks for example. Another issue may be key management difficulties such as removing a user once access has been granted where the key is shared among multiple users, not likely in a home environment.