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Securing Hadoop

You're reading from   Securing Hadoop Implement robust end-to-end security for your Hadoop ecosystem

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Product type Paperback
Published in Nov 2013
Publisher Packt
ISBN-13 9781783285259
Length 116 pages
Edition 1st Edition
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Author (1):
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Sudheesh Narayan Sudheesh Narayan
Author Profile Icon Sudheesh Narayan
Sudheesh Narayan
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Toc

What is Kerberos?


In any distributed system, when two parties (the client and server) have to communicate over the network, the first step in this communication is to establish trust between these parties. This is usually done through the authentication process, where the client presents its password to the server and the server verifies this password. If the client sends passwords over an unsecured network, there is a risk of passwords getting compromised as they travel through the network.

Kerberos is a secured network authentication protocol that provides strong authentication for client/server applications without transferring the password over the network. Kerberos works by using time-sensitive tickets that are generated using the symmetric key cryptography. Kerberos is derived from the Greek mythology where Kerberos was the three-headed dog that guarded the gates of Hades. The three heads of Kerberos in the security paradigm are:

  • The user who is trying to authenticate.

  • The service to...

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