Tuesday, 19 April 2011

A Little about Kerberos – Part I


Kerberos, which is a protocol that authenticate nodes on a computer networking setup. It comes into play when there is communication going to initiate between multiple computer systems in a network setup. It makes sure that the involved nodes carry on a secure communication over a non-secure computer network. It is accomplished by authenticating identities concerned with the involved nodes in a communication. IT Support expertises, for instance of Pro Link Systems, have stated the following brief text about kerbreos.

Primarily, Kerberos was established to make secure the client-server network and to offer a common authentication, for instance, both of the parties carrying communication justify one another's identity. In essence, Kerberos works on a symmetric key cryptography which is directly related to a trusted third party. This third party is general known as Key Distribution Center – KDC hold within two logical entities in which one is note as Authentication Server or AS while on the side of the coin the other one is known as Ticket Granting Server or TGS. However, both of the entities are important but larger part of the game is played by Tickets, which makes sure the identification of users carrying on communication on a network setup. Regardless of the above mentioned tale, KDC hold in a database that contains secret keys of every user connected on a network. If it is a client or sever, both of the machines has got its secret key with KDC, while KDC makes sure a secure connection between a client and a server by justifying secret keys of both of the parties and generate a session key which is allotted to user and server to established and maintain a secure connection.

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