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Kerberos for Beginners: Intro to Network Authentication Protocol

Delve into Kerberos fundamentals, exploring network security, authentication, authorization, and auditing. Gain hands-on practice in creating principals, requesting tickets, and mitigating protocol-specific attacks.

5.0

18 Lessons

Updated 1 month ago

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LEARNING OBJECTIVES

Identify Kerberos origins, core concepts, and why it enables secure single sign-on in networks
Apply the Three A's (authentication, authorization, auditing) to explain identity, access, and logging
Use symmetric, public-key encryption, and hashing concepts to explain confidentiality and integrity in Kerberos
Describe Kerberos components (realms, principals, KDC, tickets) and their roles in authentication
Analyze Kerberos ticket flows (AS, TGS, services) including session keys and replay-attack prevention
Evaluate Kerberos-specific attacks (DoS, dictionary, brute force, replay, MITM) and protocol defenses
Create principals and tickets in a Kerberos lab using kadmin, kinit, klist, kdestroy, ktutil, and keytabs

Learning Roadmap

18 Lessons20 Quizzes

Theory

Sharpen your skills in Kerberos, its components, and security measures against various attacks.

Attacks: Replay Attack

Attacks: Man in the Middle

Miscellaneous

Practice

Get started with practical Kerberos setup, keytab management, and remote KDC database administration.

Playground I

Playground II

Quiz

4 Lessons

Certificate of Completion

Showcase your accomplishment by sharing your certificate of completion.

Developed by MAANG Engineers

ABOUT THIS COURSE

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.

ABOUT THE AUTHOR

DataJek

A bay area tech outfit, throwing lots of good ideas on the wall to see what sticks!

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