NETWORK SECURITY - KERBEROS (AUTHENTICATION APPLICATION)

[@subhashvadlamani9412]

Wonderful explanation sir. You explain the concepts very clearly. Please continue to upload videos like these. Students need your help. Thank you very much, sir.

[@amc1516]

This video is better than my Master's in Cyber Security teaching in USA :D Good job sir !!

[@ganrajborade]

Sir thank you for your beautiful explanation. I was not able to understand it from the book. You clarified really well. Thank you again

[@yaminisindhura4302]

Awesome explanation sir Today is my sem exam. Thank you so much for helping me with ur lectures

[@anandraj7986]

Same guy

[@satishbarla5512]

Very nice teaching and I am very much captivated to ur dedication tq ...sir

[@varalakshminijamala2891]

Ur teaching is exllent sir tomorrow is exam sir thank u

[@HK-sw3vi]

Thanks a lot, once again. You teaching is fluid and easy to understand. don't stop

[@logeshwariv8772]

Concept is clear and sir u give lots of information about the topic. After viewing ur videos if I have any doubt ur comment section helps me a lot. So please provide solutions to the questions in comment section. Thankyou once again sir

[@mehwishikram1239]

very nice sir. your teaching way is very good

[@rahulsmarty1648]

Tnq u sir... Tnq u soo much Tommarrow I am going to rock the exam....tnq u for if vedios and Tnq u for helping me in learning network security

[@monicajangpangi7772]

you really work hard in making us understood the concept very clearly....thanks to you.

[@suyogkhadke4755]

Thank you sir very well explain worth watching this long video ... 😄

[@DineshKumar25k]

Sir your teaching was so nice you are like a god to me for this subject.

[@dilipkarnavat6959]

Good

[@bhanusowmya5967]

Fabulous teaching sir tq very much

[@sumeetdey6361]

Thanks for the explanation Sir...Really helpful... Please continue creating such informative videos.

[@sarahussain2656]

Exam ke akhri din aap hi log kaam aate.. Allah aapka bhala kare🙏😭

[@Raviteja_foodfusion]

Sir ...thr is no confusion...wat u explained is gud and am clear

[@lokendre7734]

thankyou so much, it helps me a lot in yesterday's university exam! thankyou sir!

[@kapiltyagi2214]

One of the best explanation of Kerberos authentication process. Do we have any LDAP video?

[@yisahkelvin1532]

Thakn you very much Sir. You explain it very well.

[@believeinyourself689]

Very good explanation. Thank you 👌👌

[@Ramy243]

Great service to society sir thank u sir

[@sundeepsaradhi]

hi Ramya thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@pauloskefle4577]

Dear brotherSundeep I am very impressed with your teaching and that show your talent very much. I was also wondering if you can number all your security accordingly so when we are learning we can follow the steps. Well done brother and God bless.

[@sundeepsaradhi]

hi kefle thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@puppalasindhuja2099]

Explanation is so clear... Thank you so much

[@sundeepsaradhi]

hi sindhuja thanks for watching my sessions and supporting our channel.keep following our channel.

[@rezwanmuid7649]

I think during step 2, when AS sends message to Client the whole message should be encrypted by the secret key of client otherwise client cannot decrypt the message to extract the ticket of tgs to be sent to the next step.

[@nehasehta7762]

You are simply the BEST...

[@sundeepsaradhi]

hi Neha thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@nehasehta7762]

Sir pl can you give ur mail id

[@sundeepsaradhi]

You can reach me at whatsapp: [phone] Email : [e-mail]

[@siddheshnaik4956]

very detailed and conceptual explanation

[@hila1250]

It's a great session for me to know the authentication server. Thanks.

[@mgo2642]

Sir there r few mistakes ..in the video..like 1. Pwd is not sent from client only two IDs are sent. AS server replies to request from client with msg encrypted with pwd, hence no reqmnt of sending pwd on unsecured media. 2. As per your second msg it is encrypted with key of TGS but it is not available with client so how will it decrypt it then. Actually the msg is encrypted with client pwd it serves both purpose as mentioned above. 3. You did not mention about lifetime parameter which is imp to counter replay attacks. 4. And finally in summary K subscript c is not session key as u mentioned but it is client pwd which is used as key and. K c,tgs is not secret key it is session key and K tgs is the secret key.

[@sundeepsaradhi]

hi M Go thanks for your explanation..

[@mgo2642]

Sir can upload videos on MD5 , algamal and elliptical curve cryptography..

[@sundeepsaradhi]

i will try to upload md5 algorithm soon

[@manishmaharjan3726]

Thank you Very much helpful for my exams

[@ManishSinghh40]

You are the best teacher!

[@arifurrahman2312]

impressed with your teaching

[@sushantagawane8683]

Very good explanation.

[@ManikantaBhargav]

Thanks for sharing the Knowledge Sir.

[@ALXandroATS]

It would be nice if you can demonstrate and explain the Kerberos authentication process using a Fiddler/Wireshark capture, while breaking down the base64 encoding process.

[@johnfernandes455]

I think we need to be very clear from where the different parameters are obtained. Example: in Kerberos, isn't the password stored as a hash? then when the 1st requests sent, how will the AS have the password to decrypt the request.

[@rahuljha1417]

Nice explaination sir ji

[@sundeepsaradhi]

hi thanks for watching my sessions. Thanks for your interest and support towards our channel. Keep following our channel.

[@Mr.Arelli]

hi beautiful explanation. may i know what kind of databases it can support ? how to setup this aunthentication to kafka ? can you please do video

[@ndyrcks1]

Awesome brother, thank you so much

[@sakethayellanki604]

this always saves night before exam. Thank you

[@valb4184]

Hello Sundeep, very good video. Is Kerberos Symmetric or Asymmetric?

[@doersstuff8067]

Thank you sir ji👍

[@yugandarreddy1043]

Hello Sundeep Thanks a lot for the detailed explanation Can you please confirm if any video is available regarding the debugging of Kerberos ticket

[@vaibhavrai293]

sir in first step slight correction is there where client USER ID is sent only which is encrypted with HASH of user password. user password is never sent on unsecured medium.

[@akshaychopra96]

Very well explained. Thank you.

[@a.yashwanth]

14:15 if the request is encrypted, then how will the authentication server be able to get the id from the request? edit: in all in one it says request to auth server is not encrypted. Only the response from the auth server is encrypted.

[@Poojasingh-ew7lg]

Thank you so much for the videos they are very helpful

[@PoojaPincha]

Nicely explained sir:)

[@sundeepsaradhi]

hi pooja thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@nikhilt3755]

18:03 isnt it ID of server? how does client know tgs at first request?

[@AbhijeetSingh-hj8yg]

Id of the server will be provided by TGS, So, firstly Client will request the ID of TGS. @nikhil

[@saravananm2280]

​@@AbhijeetSingh-hj8yg TGS will provide the ticket of server, I think @nikhil t is correct

[@sahibsingh1221]

Thank you so much sir, You are amazing!!!

[@rasheedmalik6594]

encryption and decryption points are not clear. How come client receives a Session Key if Message 2 is encrypted using Ticket TGS?

[@dirtypoliticsexposed322]

Great work sir.

[@sundeepsaradhi]

hi thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@jhallisush32]

At 6:44 u said the client is requesting server id to authentication server and again at 6:53 u said the client sends its own id appended with server id.Could u make it clear how can the client know the server id when it's requesting server id iteslf

[@abigambhir1712]

Sir thank you for the explanation. I wanted to ask can we use the equations you wrote before making the 2nd diagram as well?

[@sundeepsaradhi]

hi Gambhir First digram is for getting the service from the server which is in same network. Second diagram is for getting the service from the server which is in another network. Hope your doubt has been clarified.

[@joymercypaul]

Really very helpful and informative. Benefited a great deal.Can you please post a video on http and https. thank you,..

[@sundeepsaradhi]

hi mercy paul thanks for your interest towards our channel.

[@joymercypaul]

Can I expect a session on http and https soon :)

[@yashgoswami7929]

i like your vedios very much ..it hepls me a lot... sir please make a vedio on x.509 certificate authentication

[@sundeepsaradhi]

hi goswami thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@ranaimran38403]

At 20:52 in step two (AS to C ) if data is send encrypted with Tgs ,then how client will decrypt to get Ticket of tgs ?

[@harishbalaji7209]

Client just forwards the ticket to TGS without decryption,Ticket is like a pass. Assume AS as a ticket counter and TGS as a train and you're the client, you know where the train will be available, but you can't enter in it directly, so you buy a ticket from AS and with it you enter the train.

[@harishbalaji7209]

Ticket_tgs - doesn not contain the address of TGS, you already know where it is, it's like a pass, only if you have the pass you get access to TGS.

[@PriyanshuKumar-qu8vo]

best so far

[@charankowndinya94]

great teaching

[@TheKrish420]

Hi sir I would like to build my career in network security please guide me .....as a beginner what should I do? What certification needs to be done?

[@puneettanwani8693]

Great explanation.

[@drmvpa]

thanks for the lesson

[@harshilpatel1542]

Your explanation is very good Sir, every topic is explained in a simplified way and it becomes easy to understand. The only problem I find is when I am watching your video: The background light is too bright so I find it difficult to read and also focus is not set properly so the whiteboard seems blurry at times.

[@paper2136]

Great season 👍

[@yashwantsinghnegi8290]

how it works in real time scenario ? Like form the user logged in to his laptop with the Domain user id and password and they how he gets authenticated

[@akashpandey6470]

here kerberos block is KDC i think. please correct me if i am wrong

[@SusheelKumar-dq7np]

sir in first diagram u said client request to as nd as a response to client that is ticket v but at 9:30 u write ticket of tgs can u pla confrom sir

[@pankajpatel-Tecchef]

Excellent explainaton

[@sundeepsaradhi]

hi pankaj thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@kavyagurrala3222]

Sir cloud computing kuda chepandi.Its to easy to writing exams

[@chandrachandu9577]

can't understand those message exchanges

[@yaswanthkumar9358]

please tell about the versions of keberos 4 & 5 and differences

[@sundeepsaradhi]

hi yaswanth soon i will try to upload and that is complete theoretical and easy to understand in a single reading. thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@akshaygaigole6628]

Sir at 16:35 session key along with Ticket tgs is given to client by the authentication server and then client sends the Ticket tgs to Ticket granting server,what happens to session key in this period and what is role of session key

[@sundeepsaradhi]

hi Akshay Session key is only valid till some time period and if that time exceeds the key will be expired and not usable.You can observe this session in banking sites.If you login to your bank and kept idle for few minutes then you cant perform any further transaction and you will receive the alert as session expired. Hope your doubt has been clarified.

[@fianafianaa5332]

Tq soo much sr😊

[@vinayjaiswal887]

nice sir g

[@sundeepsaradhi]

hi vinay thanks for watching my sessions and interest towards our channel. keep following.

[@tppt3987]

Hello sir, can you become a full time associate professor at our college(SFIT)?? We have only one good professor for CSS subject.

[@shashikantmaurya1038]

Borivali lol😂😂

[@acchipirajasekharreddy6837]

Well done but some what we want. That's theory will be means better not only formulas

[@nyambelilonga555]

Thanks brother man!!!!! ¡

[@rahulkumargupta7416]

that's just amazing

[@PSRinfo]

sir lectures are very good but, for some vedios there is no clarity. koncham manchi camera vadandi sir. migata imortant vedios kuda upload cheyandi sir

[@sundeepsaradhi]

hi PSR sure i will upload them soon thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.

[@dhavalaprasanthi8517]

Sir do you have any material for network security

[@deepayadav3028]

Plz Sir can u uploade the video for x.509 certificate????

[@sundeepsaradhi]

hi deepa soon i will try to upload it.

[@deepayadav3028]

Sundeep Saradhi Kanthety OK sir..

[@suhasinirao5664]

Thanks 😃

[@kittuchowdary6945]

Excellent

[@sundeepsaradhi]

hi kishore thanks for your interest towards our channel and share my sessions with your friends and subscribe to our channel.Keep following our channel.

[@DEEPAKKUMAR-lo5mg]

thank you sir

[@saijaideepnerella3936]

sir, In this viedo you explained only version4 messages and I want version5 messages clear explanation

[@pankajpatel-Tecchef]

Can you please make the video for Replication Process for Active Directory?

[@sundeepsaradhi]

hi pankaj i will try to upload.

[@abdulkhayuum3442]

where is TGT here?

[@athiraps180]

thank you for this helpfull video. please specify the version4 and version 5.

[@alokmishra6413]

BIG THANKS

[@akshay3590]

can we say that the authenticator server be a Active directory server

[@daisonraj9577]

Thanks sir

[@samhudaya7549]

Sir tell me about technical deficiencies, version 4 issues, ticket flaging

[@bkbk4726]

1. Who is the client here? When I try to access a website, can I be the client? If so how the AS gets my password in the first place? 2. Also public key encryption not used in the whole explanation. I do see a private key within shared between AS & TGS which I understand, since there is only AS and one TGS it is easy to share the secret key between them. However I do see a private key shared between TGS and the File Sever and there can be many servers? How does the TGS & the File Server in the first place get to know the shared secret key? Also this leads to the question if the TGS is serving, let us assume 10000 File servers, then it should have 10000 secret keys in its possession - is my assumption correct? 3. The main use of public key encryption is to reduce the explosion of the number of private keys. But I am not seeing any public key encryption here? - Can you please explain where public key encryption come into picture in the usage of Kerberos? I am new to security and my question may not be logical, is so please pardon me. Please let me know. Note: Wish you had used some software to deliver the lecture, too much of time spent on drawing on the board.

[@sravanibhavasani9329]

Sir plz tell about the Kerberos version 5 & 4

[@sadieatingtastyfood4184]

Y sharing session key 2 times here ?

[@Abaadir_Mohamed]

is it same kerberos algorithm to this kerberos?

[@ramaraog4630]

Sir kindly release transport layer security,https ,ssh,mobile device security,wireless security

[@Ajay_Lakra]

Tell me about kerberos v5 and how it is different from other version like v4

[@adashore1]

Password is not transmitted in kerberos

[@ShubhamPatil..]

Sir plz upload summary of kerberos.... Version 4 message exchange...