Windows xp validating identity on wireless network

Thus, a variety of EAP authentication protocols can be used to authenticate users in today's WLAN networks.

Section 4 discusses Public Key Infrastructure (PKI) and EAP-TLS authentication protocol.

In Section 5, EAP-TLS deployment criteria are examined in detail.

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As standardized by the IEEE, security for 802.11 networks can be simplified into two main components: authentication and encryption.

The implementation of these components has been proven insecure and has been extensively documented by the security community.The network access server tunnels the authentication messages between the peer (user machine trying to authenticate) and the AAA server (such as the Cisco Secure ACS).The network access server is aware only of when the EAP authentication process starts and when it ends.Table 2-1 compares the characteristics of the widely available EAP protocols: Note: Microsoft has announced EAP support for legacy operating systems in 2002 (Windows 2000, Windows NT 4, Windows 98, Windows 98 Second Edition, and Windows ME).Also, there are third-party EAP supplicants that provide support for EAP-TLS on various operating systems (Meetinghouse Data Communications EAP supplicant, for example).Central to this proposal are two main elements: •EAP allows wireless client adapters, which may support different authentication types, to communicate with different back-end servers such as Remote Access Dial-In User Service (RADIUS) •IEEE 802.1X, a standard for port-based network access control To support all popular operating systems, Cisco employees designed and implemented Lightweight Extensible Authentication Protocol (LEAP)—a network-EAP protocol based on 802.1x authentication framework—on Cisco Aironet WLAN products and solutions.

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