Skip to main content

IEEE 802.1X

What is IEEE 802.1X?

IEEE 802.1X is an IEEE standard for post based network access control (PNAC). It is a part of IEEE 802.1 group of networking protocols. It provides an authentication mechanism to devices wishing to attach to a LAN or WLAN. IEEE 802.1X defines the encapsulation of the extensible authentication protocol (EAP), which is known as “EAP over LAN” or EAPOL. EAPOL was originally designed for IEEE 802.3 Ethernet in 802.1X-2001, but it was clarified to suit other IEEE 802 LAN technologies such as IEEE 802.11 wireless and fiber distribution data interface (ISO 9314-2) in 802.1X-2004. 802.1X authentication involves three parties such that a supplicant, an authenticator, and an authentication server.

The supplicant is a client device such as laptop that can be able to attach to the LAN or WLAN. The term “supplicant” is also used interchangeably to refer to the software running on the client that provides credentials to the authenticator. The authenticator is a network device which provides a data link layer between the client and the network and can allow or block network traffic between the two, such as an Ethernet switch or wireless access point.

The authentication server is typical trusted server that can receive and respond to the requests for network access, and can tell the authenticator if the connection is to be allowed, and various settings that should apply to that client’s connection or setting. Therefore the authentication server typically run software supporting the RADIUS and EAP protocols. In some cases, the authentication server software may be running on the authenticator hardware.

Typical Authentication Procedure

The typical authentication procedure consists of

  • Initialization
  • Initiation
  • Negotiation
  • Authentication


Learn about IEEE 802.11b

   

Labels:

Comments

Post a Comment

Popular posts from this blog

Printer

What is Printer? Another widely used output device is a printer and it is a computer peripheral device. A printer produces a hard copy of a processed text or a result. A hard copy refers to a permanent human-readable text or graphics taken on physical print media such as paper or transparency. A printer will use toner to provide a quality print on paper, a toner is a replaceable material. Once the toner gets empty we can refill it and reuse it.  Most of the printers are used for commercial purposes such as private offices, industries, government offices, photo studios, etc,. Most of the printers are used to print emails, documents, files, images, color photos, color documents, color posts, banners, advertisement posters, etc,. There are the following 5 types of printers such as dot matrix printer, inkjet printer, laser printer, dye-sublimation printer, and plotter printer this are all the printer which uses nowadays for a printing purpose. A printer is characterized by the followin...
6 comments
Read more

Dot Matrix Printer

What is Dot Matrix Printer? A dot matrix printer or impact matrix printer refers to a type of computer printers with a print head that contains a cluster of pins. The pins run back and front on the page and print by impact with striking an ink-soaked cloth ribbon against a paper similar to a typewriter. The Dot-matrix printers can print at a speed of 500 cps. Therefore a low-resolution dot matrix printers use 9 pins and a high-resolution dot matrix printer uses 24 pins. Then the low-resolution dot matrix is use to apply ink on the surface for layout.  In this a printer is able to print different patterns but not only the specific characters. Then a Dot-matrix printers are work as a non-impact method such as laser printers or inkjet printers where they also use the same process for printing. In this each dots produce by a wire or pin which is a tiny metal rod. The tiny electromagnet give the power to move forward directly small levers and a ribbon mask holder which facing the papers...
Post a Comment
Read more

Blade Server

What is Blade Server? A blade server is a compact, high density, self-contained server that chassis housing multiple thin, modular electronic circuit boards, known as server blades. It is used in the datacenters to save space, minimize power consumption, reduce cooling expenses, redundancy, reduce cabling, increase storage capacity, and reduce energy cost. Each blade is a server in its own right, often dedicate to a single application. It consists of hot-plug hard drives, memory, input/output cards, and network cards. With enterprise-class blade servers, storage is external, and blades are diskless. A blade servers is used for hosting virtual platforms, file sharing, SSL encryption of web communication, streaming audio and video content, database hosting, and application hosting. Blade Server Benefits of Blade Servers The following benefits of blade servers are Minimize Power Consumption Storage Capacity is High Less needs for Cables High Space Saving Scalable Architecture Diskless or ...
Post a Comment
Read more