Engineering's Task Force's (IETF) latest version of the Secure Socket Layer (SSL) protocol. It provides a certificate for both user and server authentication, and for dynamic session key generation.
The following procedure was used to configure a Windows XP client to authenticate to a WLAN network using EAP-TLS:
1. Obtain and install a client certificate.
2. Configure networking parameters on Microsoft XP Networking.
For the further details following URL will help you :
http://www.cisco.com/en/US/products/hw/wireless/ps430/products_white_paper09186a008009256b.shtml