Upgraded Wi-Fi Security for Windows XP SP2
May 13, 2005
Microsoft releases software that adds WPA2 support to Windows XP Service Pack 2.
The software's WPA2 certification affirms that the OS conforms to the Wi-Fi Alliance's 802.11i standard, which boosts the security of wireless networks and can help wireless internet service providers (WISPs) streamline their network deployments.
According to the company's Knowledge Base Article, the update enables the following WPA2 features:
- WPA2 Enterprise using IEEE 802.1X authentication and WPA2 Personal using a preshared key (PSK).
- The Advanced Encryption Standard (AES) using the Counter Mode-Cipher Block Chaining (CBC)-Message Authentication Code (MAC) Protocol (CCMP) that provides data confidentiality, data origin authentication, and data integrity for wireless frames.
- The optional use of Pairwise Master Key (PMK) caching and opportunistic PMK caching. In PMK caching, wireless clients and wireless access points cache the results of 802.1X authentications. Therefore, access is much faster when a wireless client roams back to a wireless access point to which the client already authenticated.
- The optional use of preauthentication. In preauthentication, a WPA2 wireless client can perform an 802.1X authentication with other wireless access points in its range when it is still connected to its current wireless access point.
The WPA2/WPS IE update, which weighs in at 1,216 KB, is available at this location.