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Glossary for Windows Server 2008 R2

Updated: June 10, 2009

Applies To: Windows Server 2008 R2

For more Windows Server terms, see either the Windows Server 2008 Glossary or the Windows Server 2003 Glossary

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802.1X is an Institute of Electrical and Electronics Engineers (IEEE) standard. IEEE 802.1X defines port-based network access control which either allows or denies connection requests to IEEE 802.3 wired Ethernet networks or IEEE 802.11 wireless networks. 802.1X is designed for organizations that use an authentication infrastructure consisting of Remote Authentication Dial-In User Service (RADIUS) servers, account databases such as the Active Directory® Domain Services, Extensible Authentication Protocol (EAP), as well as 802.1X-capable switches and 802.1X-capable wireless access points (APs). Port-based network access control uses the physical characteristics of 802.1X-capable switches and APs to either allow or deny network access to a client that is making a connection request, depending on whether that client is successfully authenticated.

A network access server that adheres to both the Institute of Electrical and Electronics Engineers (IEEE) 802.1X and the Remote Authentication Dial-in User Service (RADIUS) standards, and that is deployed in networks to enforce 802.1X authenticated IEEE 802.3 wired Ethernet access. Also known as a RADIUS client.

A network access server that adheres to both the Institute of Electrical and Electronics Engineers (IEEE) 802.1X and the Remote Authentication Dial-in User Service (RADIUS) standards, and that is deployed in networks to enforce 802.1X authenticated IEEE 802.11 wireless access. Also known as a RADIUS client.

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