How TCP really works // Three-way handshake // TCP/IP Deep Dive

You need to learn TCP/IP. It's so much part of our life. Doesn't matter if you are studying for cybersecurity, or networking or something else. Learn TCP/IP.

// MENU //
00:00 ▶️ Intro
01:32 ▶️ The beginnings of TCP
03:57 ▶️ Three way handshake
07:20 ▶️ SYN meaning/explanation
08:50 ▶️ Port numbers
09:58 ▶️ What actually happens in the handshake
14:19 ▶️ Common starting TTL values
15:04 ▶️ Why we need SYN numbers
16:11 ▶️ What actually happens in the handshake (cont'd)
19:00 ▶️ Q&A (SYN,SYN-ACK,ACK - Sequence numbers - Increments - Tips)
33:01 ▶️ History of TCP
34:44 ▶️ TCP options
36:56 ▶️ TCP flags
41:53 ▶️ TCP Window - window size and scale
59:04 ▶️ MSS (Maximum Segment Size)
59:49 ▶️ SACK (Selective Acknowledgement)
01:00:13 ▶️ Conclusion

// PCAP File //

// MY STUFF //

// SOCIAL //

//CHRIS GREER //

// SPONSORS //

wireshark
wireshark tcp
packet analysis
tcp
tcp/ip
ccna
ccnp
tcp handshake
tcp syn
tcp syn ack
ccie
tcp ip
cisco ccna

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#wireshark #tcp #hacking

[haphamdev]

I'm a software developer with a little networking background. Today I've learnt a lot more networking knowledge than my 5 years at the university. What a brilliant video. Thank you very much.

[JeremysITLab]

Found my weekend watching! Great stuff, loving the details on TCP.

[Jarek.]

I couldn't believe that I would watch 1hr video on 3-way handshake and claim it was fascinating!

[thecuriousengineer]

This is the greatest TCP/IP lesson I have ever watched. Thank you both, David and Chris! :)

[ZeyRonTT]

I thought CCNA 200-301 had a lot of information about TCP ... Until I watched this video, thanks for a great video. Learned alot

[nuxboxen]

I have to say WOW... the way you two work together is just tremendous. This is really easy to listen to and really conducive to learning.

[CFH]

Can you create a playlist containing all videos with Chris? This was so invaluable and combined with reading TCP/IP Guide it all makes sense. Thanks all!

[davidbombal]

// MENU //
00:00 ▶ Intro
01:32 ▶ The beginnings of TCP
03:57 ▶ Three way handshake
07:20 ▶ SYN meaning/explanation
08:50 ▶ Port numbers
09:58 ▶ What actually happens in the handshake
14:19 ▶ Common starting TTL values
15:04 ▶ Why we need SYN numbers
16:11 ▶ What actually happens in the handshake (cont'd)
19:00 ▶ Q&A (SYN, SYN-ACK, ACK - Sequence numbers - Increments - Tips)
33:01 ▶ History of TCP
34:44 ▶ TCP options
36:56 ▶ TCP flags
41:53 ▶ TCP Window - window size and scale
59:04 ▶ MSS (Maximum Segment Size)
59:49 ▶ SACK (Selective Acknowledgement)
01:00:13 ▶ Conclusion

// PCAP File //

// MY STUFF //

// SOCIAL //

//CHRIS GREER //

// SPONSORS //

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!

[partspieces]

I'm loving these interviews with David & Chris. Really is valuable. 2 networking pros having a talk like a teacher & student scenario for us beginners to understand better & making it more engaging. Thanks so much!

[MSSMusChaos]

One full hour of knowledge, thank you Chris for giving a easy-to-follow introduction.

[phil]

When you can listen to something like this as a podcast (not watching), while working on something else (I was tidying up), and can understand everything that was talked about then you know that the person talking not only knows what they are talking about, inside and out, but can also explain and teach it clearly. That was excellent 👌🏻

[IMAND]

It really shows how much Chris is more experienced with teaching. A great way of repeating the same thing in different ways until it makes sense. That's why I like your videos, guys. Overall very informative video, about Wireshark and TCP both.

[educastellini]

-Great content professor David Bombal, and Chris Greer...!!!
-Always nice when we look at the essentials in depth again.
-TCP/IP, Three way handshake is the basis of almost all communication that we have in the network.
-Great, this conversation and remembering in depth what we studied with the view of colleagues....!!!
-Thanks for the knowledge teachers David Bombal, and Chris Greer...!!!

[stuartwill]

This is fantastic content, hearing the real life context of this system TCP/IP and the deep dive into how it works is great!

[jonathantx]

Thank you for making kind of knowledge available to everyone. This really makes a difference when your new and starting to put things together in your mind and breaking out doing tasks on your own in a production network.

[webplethora]

Thank you David and Chris for this fanstastic session. These sessions are really empowering and the in-depth knowledge that is imparted through this video is enlightening. I am truly grateful for this. Once again, thank you David and Chris.

[teomcam]

Wow what an episode. I can’t think of a word to thank you both enough for the treasure you giving us.

[drumaddict]

about 5 minutes in and LOVE how he describes and teaches stuff.
thanks for your videos david! always a pleasure to expand my horizon with your content

[sureshjoshi]

You guys are incredible! I've been looking for videos like this for a long time. Attaching the pcap file is a great idea so that person can follow along with your flow!

[greob]

Another GREAT video! Love this series and love Chris, such a great teacher.
Would love to see more about QUIC and UDP as well.