Download e-book for kindle: 802.1X Port-Based Network Access Authentification by Edwin Lyle Brown

By Edwin Lyle Brown

ISBN-10: 1420044648

ISBN-13: 9781420044645

Written to entice a huge viewers, 802.1X Port-Based Authentication seeks to outline this complicated idea in obtainable phrases and to discover its quite a few functions to state-of-the-art machine networks utilizing this actual community protocol. this article assumes that the reader can have very little earlier wisdom and just a common knowing of desktop networking, proposing an introductory assessment in addition to an issue review in every one bankruptcy. It offers an in-depth dialogue of expertise, layout, and implementation with a particular concentrate on Cisco units. together with examples derived from the 802.1X implementation, this e-book additionally addresses troubleshooting matters in a Cisco surroundings.

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Extra resources for 802.1X Port-Based Network Access Authentification

Sample text

13 EAP-Method Negotiation Failure. If the credentials provided by the Supplicant are valid and the Authentication Server declares success, then the Authenticator’s behavior can be modified dynamically. It is possible to associate a VLAN or an access list to a set of credentials on a RADIUS server. When an authentication is successful, the Authentication Server will send this information to the Authenticator. The Authenticator will apply this information dynamically for the period during which the port is authorized.

Instead, it recapitulates and expands the definitions. One EAP Type—an Expanded NAK—was added to allow for negotiation of EAP-Method. The first sections of the new RFC are dedicated to a discussion not contained in the previous specification—how EAP functions between Supplicant (now called an EAP Peer) and Authenticator. Four distinct Layers of function are described: Lower Layer, EAP Layer, EAP Peer or EAP Authenticator, and EAP-Method. Even though this is a dry, technical portion of the document, it is very important because it shows how the entire thought process is maturing.

Remember that the premise is that Port-Based Authentication takes place prior to allowing any other communication. This means that in a shared environment the Supplicant would need to be able to communicate only with an Authenticator and would need to exchange only encrypted messages. The intent of Port-Based Authentication is to disallow communication with other devices prior to the authentication occurring. 1X is trying to prohibit. 1X in an environment that truly and fundamentally operates with the characteristics of Point-to-Point, such as a switched environment, than to require adjustments to the functional workings of a shared environment?

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802.1X Port-Based Network Access Authentification by Edwin Lyle Brown


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