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Kerberos is an essential part of any tech stack. It helps mitigate cyber attacks by providing strong authentication for client/server applications by using secret-key cryptography.

In this course, you will cover the basics of network security including: authentication, authorization, and auditing. You will also learn the fundamental concepts of Kerberos such as Key Distribution Center (KDC), Principals, and Ticketing.

Towards the end of this course, you will explore common attacks that are specific to the protocol and how Kerberos works to triage them. Lastly, you will get some hands-on practice with Kerberos where you’ll work to create a principal and request a Ticket-Granting Ticket from an Authentication Server.

By the time you’re done, you will have picked up a new in-demand skill that will allow you to better protect your data.

Kerberos for Beginners: Intro to Network Authentication Protocol

Now let's look at the exchanges that happen among the various players involved in a Kerberos system. Say you want to communicate with a service (the friend from the analogy in the previous lesson), but need to prove your identity to the Authentication Server first (the oracle from the analogy). Once you have proven your identity to the Authentication Server, you can request a ticket from the Ticket Granting Server (the postman) to communicate with the desired service (the friend from the analogy). The ordered list of interactions is as follows: 

1. The Authentication Server (AS) has a copy of the cryptographic key generated from your password and also the key for the Ticket Granting Service (TGS).


This lesson explains the interactions of the various entities in the Kerberos protocol.

Theory

Practice

Quiz

Protocol: Kerberos