'Kerberos' in Active Directory 

ENORMOUS explanation. I've been looking for a clear explanation of Kerberos for a long time and I find this one the most clear in the web. You perfectly balanced your explanation, I sincerly don't believe that it can be clearer than this without oversimplifying. Great.

The best video ever about AD login process and Kerberos, thanks a lot

It is really unfair giving 1 like to this video.1000 likes from me .It is really very informative and very clear explaination.I spent almost 4-5 hours searching for kerbros explaination and finally reach to this destination. I would love more if we had a quick configuration overview on server side..but again This is a million dollar video.Thanks a lot Mr.Mahdi.

Very detailed and well explained video. Thank you so much for sharing the information and making it so clear and easy..

Mahdi- nice job my friend! Now to watch it 5 more times for it all to stick. Much appreciated...really!

Clear and Detailed video on Kerberos. Looking forward for more video tutorials.

Very very detailed. Thanks for the video

Thank you so much ..came here after confusing article about kerberos from Microsoft ..This is well explained and cleared all my doubts.. thank you again!!!!

Great Explanation of Kerberos that I ever come across.

Thank you very much. This is the most detail and comprehensive explanation of active directory and Kerberos in action. I hope I can find more educational materials created by you.

So the main function of active directory is to verify that right user is using service ...... anyone can correct me if I'm wrong

You forgot something very important in your explanation. Time.