TLS Handshake Deep Dive and decryption with Wireshark

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Warning! We go deep in this video to explain how the TLS handshake is completed. Warning! This is a technical deep dive and covers a lot of detail including SSL decryption and discusses RSA, Public and Private Keys, symmetric key exchange and lots more.
// Wireshark pcap //
davidbombal.wiki/tlsedpcap
// Ed's TLS course //
davidbombal.wiki/edtls49
Use coupon code: "BombalTLS" to get for $49
// MENU //
00:00 ▶️ Introduction
02:11 ▶️ How SSL/TLS is shown in a browser
02:40 ▶️ Pre-Requisites
05:15 ▶️ Data Integrity/Hashing
06:27 ▶️ Potential Problems with Hashing/man in-the-middle attack
07:32 ▶️ Message Authentication Code
10:09 ▶️ Prerequisites continued
11:51 ▶️ Symmetric Encryption
12:45 ▶️ Asymmetric Encryption
17:00 ▶️ Private and Public Keys
20:05 ▶️ Signatures
21:55 ▶️ Protocols
22:50 ▶️ SSL/TLS Handshake, Client Hello and Server Hello
28:35 ▶️ Client Hello and Server Hello in Wireshark
34:09 ▶️ Certificate
35:12 ▶️ Server Done
35:35 ▶️ Server Hello, Certificate, Server Hello Done in Wireshark
36:51 ▶️ Client Key Exchange
50:26 ▶️ Client Key Exchange in Wireshark
51:39 ▶️ Client Change Cipher Spec and Finished/Encrypted Verification
54:08 ▶️ Server Change Cipher Spec and Finished/Encrypted
56:10 ▶️ SSL/TLS Handshake in Wireshark
57:44 ▶️ Decrypting a PreMaster Key with a Private Key in Wireshark
1:03:15 ▶️ Where to get in contact with Ed to learn more
// David's SOCIAL //
Discord: / discord
Twitter: / davidbombal
Instagram: / davidbombal
LinkedIn: / davidbombal
Facebook: / davidbombal.co
TikTok: / davidbombal
RU-vid: / davidbombal
// Ed's SOCIAL //
Twitter: / ed_pracnet
RU-vid: / @practicalnetworking
// Ed's TLS course //
davidbombal.wiki/edtls49
Use coupon code: "BombalTLS" to get for $49
// More detail on Ed's RU-vid channel and website //
Asymmetric Encryption explained from a Practical Perspective:
www.practicalnetworking.net/p...
RSA Algorithm:
• RSA Algorithm - How do...
DH Algorithm:
• Diffie-Hellman Key Exc...
Practical TLS - Crypto & SSL/TLS foundation:
• Practical TLS - Free L...
// MY STUFF //
www.amazon.com/shop/davidbombal
// SPONSORS //
Interested in sponsoring my videos? Reach out to my team here: sponsors@davidbombal.com
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Please note that links listed may be affiliate links and provide me with a small percentage/kickback should you use them to purchase any of the items listed or recommended. Thank you for supporting me and this channel!
#tls #ssl #wireshark

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25 июн 2024

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@davidbombal 2 года назад

// Wireshark pcap // davidbombal.wiki/tlsedpcap // Ed's TLS course // davidbombal.wiki/edtls49 Use coupon code: "BombalTLS" to get for $49 // MENU // 00:00 ▶ Introduction 02:11 ▶ How SSL/TLS is shown in a browser 02:40 ▶ Pre-Requisites 05:15 ▶ Data Integrity/Hashing 06:27 ▶ Potential Problems with Hashing/man in-the-middle attack 07:32 ▶ Message Authentication Code 10:09 ▶ Prerequisites continued 11:51 ▶ Symmetric Encryption 12:45 ▶ Asymmetric Encryption 17:00 ▶ Private and Public Keys 20:05 ▶ Signatures 21:55 ▶ Protocols 22:50 ▶ SSL/TLS Handshake, Client Hello and Server Hello 28:35 ▶ Client Hello and Server Hello in Wireshark 34:09 ▶ Certificate 35:12 ▶ Server Done 35:35 ▶ Server Hello, Certificate, Server Hello Done in Wireshark 36:51 ▶ Client Key Exchange 50:26 ▶ Client Key Exchange in Wireshark 51:39 ▶ Client Change Cipher Spec and Finished/Encrypted Verification 54:08 ▶ Server Change Cipher Spec and Finished/Encrypted 56:10 ▶ SSL/TLS Handshake in Wireshark 57:44 ▶ Decrypting a PreMaster Key with a Private Key in Wireshark 1:03:15 ▶ Where to get in contact with Ed to learn more // David's SOCIAL // Discord: discord.com/invite/usKSyzb Twitter: twitter.com/davidbombal Instagram: instagram.com/davidbombal LinkedIn: www.linkedin.com/in/davidbombal Facebook: facebook.com/davidbombal.co TikTok: tiktok.com/@davidbombal RU-vid: ru-vid.com // Ed's SOCIAL // Twitter: twitter.com/ed_pracnet RU-vid: ru-vid.com/show-UCKmU-GKiukM8LYjkJFb8oBQ // Ed's TLS course // davidbombal.wiki/edtls49 Use coupon code: "BombalTLS" to get for $49 // More detail on Ed's RU-vid channel and website // Asymmetric Encryption explained from a Practical Perspective: www.practicalnetworking.net/practical-tls/rsa-diffie-hellman-dsa-asymmetric-cryptography-explained/ RSA Algorithm: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-Pq8gNbvfaoM.html DH Algorithm: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KXq065YrpiU.html Practical TLS - Crypto & SSL/TLS foundation: ru-vid.com/group/PLIFyRwBY_4bTwRX__Zn4-letrtpSj1mzY // MY STUFF // www.amazon.com/shop/davidbombal // SPONSORS // Interested in sponsoring my videos? Reach out to my team here: sponsors@davidbombal.com Please note that links listed may be affiliate links and provide me with a small percentage/kickback should you use them to purchase any of the items listed or recommended. Thank you for supporting me and this channel!

@PracticalNetworking 2 года назад

David! It was a ton of fun doing this video with you! Thanks for the opportunity! I love sharing some of the wonders of the SSL and TLS protocols =). Cheers!

@dhirajverma8600 2 года назад

CIA triad is about confidentiality integrity and availablity. Not authentication @ some where around in video at 3 to 4 min u mentioned it incorrectly..

@PracticalNetworking 2 года назад

@@dhirajverma8600 Some people put "authentication" in "Integrity". Some people list it as it's own service (as I did). This was intentional because achieving all three requires separate processes, which I use to frame the rest of my course picking apart TLS/SSL (that is in fact where these slides are from, is my TLS course).

@davidbombal 2 года назад

Thank you so much for sharing your knowledge with all of us Ed!

@israel-ie4vp 2 года назад

Heading over to your channel 😀

@PracticalNetworking 2 года назад

@@israel-ie4vp

@Noobinski Год назад

OMG! After 25 years I finally got my head around how those handshakes work and how security is done. Thank you very much, gentlemen!

@Frack_Black 2 года назад

Great to see this collaboration with Ed, been following his channel for a while now. He has a very good, natural, delivery style and hits all the detail without cluttering it up with unnecessary info. Fair play David for throwing some exposure his way.👏👏

@PracticalNetworking 2 года назад

Hi Frack =). Thanks for the kind words. It was loads of fun to do the collab with David !

@alokrajput13 Год назад

@@PracticalNetworking Great explanation

@stepankarel903 Год назад

Awesome to see Ed on your channel, he is without any doubt one of the best networking teachers I came accross. Especially him and Jeremy helped me a lot in passing my CCNA - actually just today!

@balajichowdary9797 2 года назад

Thank you very much David for having Ed from practical networking on your show.I am very delighted to see him with you

@Alain9-1 2 года назад

thank you so much for the quality I've never missed these long version video

@davidbombal 2 года назад

Thank you!

@dwaynesudduth1028 2 года назад

Wow... I'm simply blown away with this content---between this and Chris Greer, I am learning so much about how networking works---beyond what I've learned in my career in the support trenches. I'm going to have to watch this one again--equipped with a notebook, and then go hit the site and buy the full course to expand that knownledge. Thanks for doing this, both yourself and Ed Harmoush!

@davidbombal 2 года назад

You're welcome Dwayne!

@kylechavez3841 2 года назад

David this type of content is amazing. I am loving these deep dives you are doing with other SMEs. This content is extremely helpful and I greatly appreciate you working out offer code deals to get content from the SMEs at a discount. Just purchased Ed’s TLS course and Chris’ wireshark course. Super excited to go through both of them! Keep these deep dives coming, the real world examples and the heavy usage of wireshark packet captures to demonstrate what is actually happening is VERY helpful. There are lots of resources online and offline with all the basics, I appreciate you diving into how things really work so we can get a better foundation to design and troubleshoot from. Keep this up, I’m looking forward to more protocols and more deep dives!

@PracticalNetworking Год назад

Cheers, Kyle. Happy to do more of these =)

@setsura7 2 года назад

I had in-person course with Ed, he is absolutely a very very talented instructor, I still remember the day he taught us about subnets, networking stuff, he just made all the things very easy to understand. Glad to see Ed again here!

@PracticalNetworking Год назад

@jongxina3595 2 года назад

By far the best video on TLS ive ever seen. Amazing.

@PracticalNetworking Год назад

@kamalpreet9850 2 года назад

Amazing , I dont think so anyone can explain TLS with this much detail and in such a simple and crisp way. Love your work David and Ed. I never comment of videos but this one has made me to to comment and follow both of you!!!

@PracticalNetworking Год назад

Glad you enjoyed this, Kamal. Cheers !

@josephroiml 7 месяцев назад

I appreciate that David acts as an mediator between all these professionals and starting hackers, who are trying to find their way. Great concept.

@Don-Carillo 2 года назад

Two masters of the game right here. Ed's channel is absolutely superb. TLS, OSPF, NAT etc can be quite complicated but he makes it so easy to absorb without leaving any stone unturned. Can't reccomend it enough. Been waiting for this collab. Cheers both 👍

@PracticalNetworking 2 года назад

@kukuwawakukuwawa44 2 года назад

Immediately subscribed to Ed after the first 10 mins of the video. He is so good at explaining the concepts. Thank you David for sharing this collab.

@PracticalNetworking Год назад

@aviborse1 Год назад

This is a Gold mine!! I have been trying to find this explanation for quite sometime. Awesomely explained and i love the passion Ed. So the first thing i do support Ed by subscribing to his course and ensuring the knowledge stays with me in my repo. Thank you both of you!! Keep up the good work Ed and David. God Bless

@PracticalNetworking Год назад

Cheers Avinash. Kind of you to say! Glad you enjoyed the course.

@mikehavekin3394 9 месяцев назад

Superb presentation. The depth and abliity to present these complex topics in such a manner takes real skill. Ed i'm signing up to your SSl course tonight, i am tight but you've put so much work in these videos i feel you deserve something back.

@kotemanoble1734 2 года назад

I got inspired by David’s positivity to give IT a try about a month. Am in classes now, found Ed H about a week ago and joined his discord. A great teacher!!!

@PracticalNetworking 2 года назад

Hey Kaizen =) Welcome to the world of Networking! ^_^

@geoffreyvanwyk4588 2 года назад

Congratulations David and Ed on your awards! And thank you for this enjoyable and informative lecture.

@PracticalNetworking 2 года назад

Thanks Geoffrey! Cheers!

@sharathugranad1646 Год назад

The best explanation I have ever come across about TLS. Thank you

@deadcatthinks6725 2 года назад

Even after being in this area since last century it's always refreshing to see a well presented, easy to to follow, informative presentation by people who you can tell know their subject matter inside and out, well done both, thoroughly enjoyable video.

@PracticalNetworking 2 года назад

Thanks for the kind words =). Glad you enjoyed the presentation!

@Thebanday 5 месяцев назад

Watched many Videos on TSL/SSL but the way you explained and even demonstrated with Wireshark was just great.. Thanks for this video

@Hardik-li2kd 5 месяцев назад

Thank you Devid and Ed Harmoush :) for this video 🙏 I think this is the only video on RU-vid that explains the TLS handshake in such detail.

@mikethompson7406 4 месяца назад

I'm only 31 minutes in but this is the one video that finally made me feel comfortable with what's going on with certs!

@SouravDuttaROCKSTAR 2 года назад

David and Ed are both gold mines of knowledge. Absolutely awesome knowledge sharing on this video, will be rewatching again for deeper knowledge. Loved it

@davidbombal 2 года назад

Glad you enjoyed the video Sourav!

@PracticalNetworking 2 года назад

Cheers, Sourav!

@moviesinnutshell8815 4 месяца назад

Disagree, they are decrypting their own data using private key. 😂 . If they can tell how to get private key of another server then I agree wid you.

@prasannaiyer6615 2 года назад

Great video David and Ed! I would like to dig deeper on: 1. The client key exchange (the inner aspects of it) 2. Certificates Thanks for the video! Keep on posting more content.

@PracticalNetworking 2 года назад

Certificates would be fun to pick apart =)

@millacentbystander2992 2 года назад

David again thank you so much for making the analogies and simplified explanation. Thank you to your guest as well, absolutely brilliant presentation. David you chime in at the perfect time.

@PracticalNetworking 2 года назад

Glad you enjoyed it, Millacent. Cheers!

@nikhils1376 2 года назад

Quality time spent. Thanks David!

@freestylebeginner Год назад

THIS PRESENTATION IS LEGENDARY MATE

@henryhrose1 11 месяцев назад

Great Explanation, one of the rarest to have such deep understanding on TLS

@dariom9931 2 месяца назад

That's my TLS teacher! 😂 Go Ed !

@Odim65 Год назад

Now it's the about the 7th or more round to watch this and I think I have really decrypted the idea on this !!! Many thanks David and Ed. Keep the deep dive coming.

@davidogedegbe1591 2 года назад

This was a blast. Appreciate the technical analysis.

@robertroy1878 2 года назад

Easily one of the best IT related videos I've ever watched....and I've watched hundreds as an online IT student.

@PracticalNetworking Год назад

Thank you for the kind words, Robert. Glad you enjoyed this !

@raymondhernandez266 2 года назад

Looks deep enough on my end. Happy to see the references to the individual Request for Comments (RFCs) in Ed's slides.

@davidbombal 2 года назад

Thank you Raymond!

@PracticalNetworking 2 года назад

=) This was only scratching the surface! ;)

@CyberJE8120 2 года назад

Thank you so much for doing this David! Ed is awesome, I watch his RU-vid tutorials and love his way of explaining technical concepts. 🌟🌟🌟🌟🌟

@PracticalNetworking 2 года назад

Thank you, James =)

@vimrichie 2 года назад

I've learned more from David than any school. The knowledge bombs he has been dropping are just off the charts.

@davidbombal 2 года назад

Thank you Ricardo! Sharing is caring - especially knowledge 😀

@ruchit8762 2 года назад

Thank you David for organising this wonderful session and introducing Ed with his brilliant content and teaching. Kudos to both of you on this presentation and on the awards you got !

@VideosfromElle 2 года назад

Ed is a TREASURE!

@PracticalNetworking 2 года назад

@@VideosfromElle

@user-rd6ho9kg4g 2 года назад

This is wonderful! please do more of these!

@Qupear Год назад

it's nice how informative this video is and with minimum amount of advertisement. this is what any video hosting should look like)).

@justinhunt7575 2 года назад

This was such a great video, I thoroughly enjoyed it and am the information that yall gave! Thank you both for your time putting this together!

@PracticalNetworking 2 года назад

Glad you enjoyed it, Justin!

@macbethmabena9816 2 года назад

Once again Mr David thanks so much. congratulations for hitting 900k followers. you have helped a lot of people. we really appreciate

@abdullahquan7663 5 месяцев назад

Ed Harmoush is the best instructor in the world. I purchased his TLS course last year & could not be more satisfied - highly recommened

@Nationalist04 2 года назад

I have read this comment literally on 100s of videos on RU-vid, but this one i am writing down in straight from my heart. Best video on TLS , i could understand it easily with so much details in it.

@PracticalNetworking Год назад

Thank you for the kind words, Rahul. Glad you enjoyed it =)

@ameylokegaonkar6026 Год назад

Thanks David and Ed 👌Superb stuff. Very few guys can simplify and explain in so much depth.

@innovationsurvival Год назад

Spectacular video. I will probably sign up for Ed's online SSL/TLS course. Thank you both.

@HK45ACPoperator Год назад

This is good stuff, Ed and David. Thank you for helping me translating this to a network architecture that doesn't know anything about how the load balancer is the middle man to secure an SSL transaction.

@jingkangloh7710 Год назад

The content is so good! I learned so much!! Absolutely appreciate the efforts made to come up with this Technical Deep Dive video

@mesutisleyen8828 2 года назад

It is great to meet ed, It has been always to complicated topics when I was in school. Loved it !!

@jayrajgoyal9369 10 месяцев назад

Very methodically explained. Thanks to both Ed and David.

@adedejiemmanuel1 2 года назад

Thank you David and Ed.

@chriskirkpatrick5331 2 года назад

Awesome! Awesome! Awesome! Content!!! One of the best and easy to follow explanations of this subject I’ve seen! Thanks David and Ed!

@PracticalNetworking 2 года назад

You're welcome, Chris! Glad you enjoyed it!

@ehcankur 2 года назад

Ed has so much of knowledge, that i can see , from all that i can say that dialog If I know even half of what you know, my little mind will explode

@PracticalNetworking Год назад

@WesBowman 2 года назад

Nicely done, David and Ed! I wish I can force most IT pros to review this video... very useful explainer!

@davidbombal 2 года назад

Thank you Wesley! Much appreciated!

@PracticalNetworking 2 года назад

Agreed =). Glad you enjoyed it, Wesley!

@mohammedissam3651 2 года назад

I I’m an IT tec programmer and already know this , however I watched it whole it’s informative and simplified with real world examples , I do use my own encryption tho! “You can’t make the whole world be helpful like these guys !” most of us are lazy. I searched topics and found him XD

@joerockhead7246 2 года назад

Good stuff, David, & Ed. Thank you.

@gameranonymous6152 2 года назад

Thank's for this david,nice video 🔥🔥,keep going

@drakouzdrowiciel9237 8 месяцев назад

I feel like I have a much better understanding of TLS now, thanks to this video.

@radhakrishna2501 2 года назад

Thank you David and Ed

@alexmcclead7012 2 года назад

Loved this TLS Handshake. I've been learning about https and tls for a while.

@zer0day463 Год назад

This guy is life saver xD. Amazing way of explaining stuff using simple layman analogies

@user-eg5kn9qq3r 2 года назад

Thanks for taking this topic, I was very much interested in knowing more and more about the SSL/TLS handshake. This video really helpful.

@PracticalNetworking 2 года назад

Glad you enjoyed it, Harshit =)

@ashokreddyb7867 Год назад

Commendable efforts. Greatly elucidated. Excellent work. Excellent dissemination. Bow down to the knowledge and to the ability to express effectively.

@Kiyotaka_Ayanokoji_kun 2 года назад

A really helpfull video. You deep dive videos are really good, I always enjoy watching your videos.

@anthonytheslav9887 Год назад

deep was counted 346 times in 24 mins . truly got deep quickly deeply . I kid , great vid! thx so much

@theanonymous6198 Год назад

Hey bro can you help me to decrypt my handshake plz I have tried almost all the thing like aircrack all kali linux wordlist, guthub, crackstation, hashcat, hashcat rules and also brutforce attack a entire weak on Google cloud

@jordanbourcier2424 2 года назад

Great video!!! I had recently been diving into these concepts more on my own and it was nice that you just happened to post this video lol I am definitely going to re-watch!

@PracticalNetworking 2 года назад

Great timing =)

@jaysonjoy6467 2 года назад

Sir, I bought your wireshark course. I think you are the best teacher on this platform.

@davidbombal 2 года назад

Thank you Jayson!

@amitpatil1900 2 года назад

Awesome stuff, enjoyed lot, looking forward to see how Pre-Master secret shared with DH, Thank you both!!

@benedictjojo5761 Год назад

this is brilliant! learnt a lot today!

@pleasethink4789 Год назад

Holy crap, this video was so freakin excellent! Thanks

@MrBitviper 2 года назад

awesome video as always david. love to see stuff like this thanks

@PracticalNetworking 2 года назад

Glad you enjoyed it =)

@Most_liked_videos Год назад

TLS, Cryptography, Session mgt, Tunneling everything explained in a single session.. amazing superstuff

@PracticalNetworking Год назад

Glad you enjoyed it!

@roshangraikar 2 года назад

Thank you so much for taking up this and making it so simple. I know it is not that straightforward but the concept explained is the best way possible. Not sure if anyone could have explained it better than you did..

@PracticalNetworking Год назад

Thank you for the kind words, Roshan. Glad you enjoyed it.

@zachfenton608 2 года назад

That was wonderful. Great conversation.

@jairunet 2 года назад

Excellent topic and very very detailed explained I will also need to watch this whole video in sections there is so much good information on it that Ed needed to explain quickly I imagine because of the time constraints. We definitely need to have him back with a series of videos instead. Thank you again, Ed is in my opinion one of the smartest ones I have seen on your list of guests and you have had very brilliant engineers on your channel Neil and John Hammond, WireShark Chris, and now Ed for TLS and other network topics explained the right way.

@PracticalNetworking 2 года назад

@parhambozorgi1376 5 месяцев назад

this was just awesome lecture, i have learned a lot TLS and SSL, thank you.

@lienn8032 10 месяцев назад

Excellent session! Thank you.

@DandReiOwnU 2 года назад

Free education! Thank you David and Ed.

@PracticalNetworking 2 года назад

You're welcome, Andreius!

@bobburke4336 Год назад

Great session. Ed from practical networking is awesome!

@peachycaper 2 года назад

I used Ed's Subnetting and ACL videos when I was prepping for my CCNA. They were excellent and would highly recommend.

@PracticalNetworking 2 года назад

Thanks Jamie. Glad they helped you =)

@makal4966 2 года назад

This was really usefull and very clear explained thank you David and Ed.

@PracticalNetworking 2 года назад

You're welcome, Makal. Glad you enjoyed it!

@zoranzasovski 2 года назад

Crystal crisp explanations, just like Chris Greer. Really enjoying this videos of yours David!!! To continue further with Ed, perhaps DH overview and what are common issues with ssl where things might get wrong...Cheers!!!

@PracticalNetworking Год назад

@ruhsata 2 года назад

Thank you David and Ed for this very useful video

@PracticalNetworking 2 года назад

You're welcome, Ruhide!

@gatty. 2 года назад

I feel slightly bad, cause you're giving us such EPIC information and education here!

@TheBendixSA 2 года назад

This was damn well done thanks David and Ed learned a lot from this!

@PracticalNetworking 2 года назад

Glad you enjoyed it =)

@masettyvivek8155 2 года назад

Great video and precise explanation!

@user-qb8rm3vg2g 10 месяцев назад

two excellent sources of information, lucky they post

@MaximusIA 2 года назад

Many thanks for this demo ❣

@ando440 2 года назад

This is great. Loving this

@rajneeshrai1781 Год назад

Love to see another episode of this series...

@PracticalNetworking Год назад

David and I are in discussion to do another one later this month ;) Stay tuned!

@tristix3721 2 года назад

This is so useful as content. Thank you David and Ed.

@davidbombal 2 года назад

Glad you think so!

@PracticalNetworking 2 года назад

Glad you enjoyed it, Trist!

@tristix3721 2 года назад

@@davidbombal Recently, my company forced me to fix a lot of vulnerabilities on the web server and one of it is related to TLS and SSL. This course is just right on time for me to have an idea what TLS / SSL are about. My thanks again.

@gerorgemerner639 2 года назад

Thank you for this enjoyable.

@ketansharma6955 Год назад

This was absolutely awesome, I was not able to understand a lot of it, but what I did, was awesome.

@theanonymous6198 Год назад

@rudrasalaria3431 2 года назад

This is practical networking. I subscribed his channel. Coz his explanations & teaching methods are such an amazing. Sorry david, your skills are best but this guy is even better.

@mohamedhabas7391 Год назад

Truly fantastic stuff

@tamaspeter3599 2 года назад

It was great! Thanks Ed & David! Finally I got the point!

@PracticalNetworking 2 года назад

Wohoo!

@tamaspeter3599 2 года назад

@@PracticalNetworking I have just started your SSL/TLS training! Recommenended for everyone!

@formlessval 2 года назад

Thanks alot for those deep dive

@petercumiskey3188 2 года назад

Brilliant Tutorial guys. Will definately take a look at the full course.

@PracticalNetworking 2 года назад

Cheers Peter. Glad you enjoyed it !

@aruneshjha7327 Год назад

Hey David. please call Ed for an ipsec deep dive ... There are lots stuff available but nothing comes close to what you guys (DAVID, CHRIS, ED) deliver. Thanks for sharing your amazing knowledge Ed.