TCP Fundamentals Part 1 // TCP/IP Explained with Wireshark

Рет қаралды 417,425

Күн бұрын

Let's dig into the Transport Control Protocol with a deep-dive into the fundamentals of TCP/IP. This is an important topic for all network engineers to understand when troubleshooting network problems.
If you liked this video, I’d really appreciate you giving me a like and subscribing, it helps me a whole lot. Also don't be shy, chat it up in the comments!
== More Training from Chris ==
▶Getting Started with Wireshark - bit.ly/udemywireshark
▶Getting Started with Nmap - bit.ly/udemynmap
== Live Wireshark Training ==
▶TCP/IP Deep Dive Analysis with Wireshark - bit.ly/virtualwireshark
== Private Wireshark Training ==
Let's get in touch - packetpioneer.com/product/pri...
Chapters in video:
0:00 Introduction to TCP
6:46 Why Learn TCP?
11:16 Who owns the transport layer?
17:58 The TCP Handshake
31:50 The Receive Window
34:15 TCP Options
55:11 TCP Window Scaling
1:00:22 Case Study #1 - No SACK
1:11:00 Measuring App Response Time
-------------- Trace File Analysis Services / Private Training ----------------------
Got packet problems that you need help digging into?
Want to schedule a private training with Chris for your team?
www.packetpioneer.com/contact

Пікірлер: 249

@alexanderrikmanis8753 4 жыл бұрын

Chris, you are just awesome! Do you have whole your courses available somewhere? Like you mentioned you run a few days classes. I am very keen to watch those recorded - something like what INE (and others) does.

@ChrisGreer 4 жыл бұрын

Hello Alexander - very happy to hear that the videos are helping you. I have an on-demand training available on Udemy. TCP/IP Deep Dive with Wireshark - bit.ly/udemywireshark Check it out! It's got a ton of hands-on labs, assignments, and ways to practice on your own. I hope you like it.

@cupajoesir 5 жыл бұрын

He repeats the questions! Good form sir, good form.

@NotSoTechish 5 жыл бұрын

Fantastic Chris! Your wait for the packet from layer 7 (1:12:00) was hilarious! You have actually inspired me to learn more on TCP. Thanks for the video.

@yashverma3583 3 жыл бұрын

I keep coming back to this video from time to time and I always find something that I missed the last time. Thank you, Chris.

@ChrisGreer 3 жыл бұрын

Thanks for the comment Yash! I'm glad to hear that the video is helping you. Stay tuned on my Intro to Wireshark course for more TCP stuff.

@RajivKumar-ee7xv 3 жыл бұрын

Whole world need trainers and teachers like you. You are awesome

@kapilsonyt 3 жыл бұрын

You are one hell of a expert Sir! I learned what I could not understand even in my years of networking career and in college degree. Thanks very much, appreciated!!!!!!

@simonp1 5 жыл бұрын

Excellently explained, I know nothing about this but after 1h17mins I can start to see a little of what it’s all about looking forward to the rest of the series

@parthamishra09 3 жыл бұрын

I hope you know you're awesome !! The best thing is how you put 'air' into explanations and let the audience take notice of subtle things, ruminate, analyze and really understand. You have covered so many topics in this single session and made sure that everyone remembers/ retains 90% of those (I'm an app-guy and others would retain more than me). Amazing stuff !!

@ChrisGreer 3 жыл бұрын

thanks for the comment Partha! I appreciate it. Make sure to check out my new Wireshark Masterclass too - kzfaq.info/get/bejne/hbtddJV20rzWe4U.html

@parthamishra09 3 жыл бұрын

@@ChrisGreer Thanks for that link. I wouldn't miss it for anything.

@TristanSchleining 3 жыл бұрын

This was SUCH a good video! I think your teaching style is excellent. Thank you for making this available.

@ChrisGreer 3 жыл бұрын

Thank you for the comment Tristan!

@JDBoelter 5 жыл бұрын

I feel as if I hit the motherlode of TCP and Wireshark knowledge with this presentation. Thanks, Chris!

@ChrisGreer 5 жыл бұрын

James Boelter thanks for the comment!

@MrHawk407 4 жыл бұрын

Hats off Chris.. Thanks lot for this wonderful presentation.

@sreenislg 5 жыл бұрын

Can't go to next video, without liking it; Good video Chris, thanks for this basic TCP stuff; lets jump to your next session. Thank you.

@lorenzopreston 5 жыл бұрын

I love this video, I wish I had it during my Computer and Network Security course last semester. Thanks for sharing.

@PaulOfford 5 жыл бұрын

Typical great presentation from Chris. The guy is a consummate professional.

@shivanimakwana2002 4 жыл бұрын

Nice presentation,I like the way your are explaining things in a simple way & Very informative video.Thank you so much

@blackdarth3805 Жыл бұрын

Stellar public speaking and instruction. Glad I found this channel.

@ChrisGreer Жыл бұрын

Glad you found it!

@zarar1941 2 жыл бұрын

Chris, I have learned a lot from you in this video that I have not learned in last 10 years. thanks

@narendrakumar1987inn 5 жыл бұрын

This is fantastic stuff. Very helpful. Thank you!

@Kruskall 2 жыл бұрын

Great, Thanks for sharing Chris... Love your enthusiasm, and the your joy of teaching the subject. Good Job!

@ChrisGreer 2 жыл бұрын

Thanks for the comment Michael!

@cottondai 3 жыл бұрын

such a fantastic teacher and such insights into the TCP packets. I watched a 5 hour course on Wireshark from another teacher and watching this video I realized I am finally learning what the 3 way handshake is. This teacher should educate all network administrators and cyber security personnel.

@ChrisGreer 3 жыл бұрын

Thanks for the comment! Glad the video helped.

@perspectivesmatter7440 3 жыл бұрын

this was a brilliant hands-on example Chris. In additional to clearly explain how TCP works and why handshakes are always so important, you have humoursly also explained why application guys and network guys keep bickering over latency issues. I am from application team and this video has enhanced my troubleshooting skills. Thank you so much for posting this!

@ChrisGreer 3 жыл бұрын

Thanks for the comment! I really appreciate the feedback.

@edsonrocks 3 жыл бұрын

It was an incredible session Chris, thank you for the great explanations and good humour.

@ChrisGreer 3 жыл бұрын

Glad you enjoyed it!

@wojciechnowakowski1803 2 жыл бұрын

Absolutely fantastic explanation. Thank you!

@acostamanuel2011 3 жыл бұрын

Stopped and liked the video because it has been one of the best and informative video of how TCP works in Wireshark.

@ChrisGreer 3 жыл бұрын

Thanks for the comment and for watching Manuel! Glad it helped you. Hope you like the rest of the content on the channel too.

@albertos6503 5 жыл бұрын

Impressive style & content. Thanks so much for sharing this

@pmaurin 5 жыл бұрын

This is one of the best talks on networking I've seen. If you have part 2 available, it would be awesome to see it. Thank you for sharing.

@ChrisGreer 5 жыл бұрын

Thank you for the comment Pablo - I will post round two soon!

@manangandhi8338 5 жыл бұрын

Chris Super explanation of TCP. More window Size to you..... I have seen lot of videos for tcp but this one contains all of it most the part i would recommend everyone to watch this video instead of shuffling through the youtube bits and bytes of other tcp video

@sachs8379 3 жыл бұрын

Man Chris, you just nail it with expressions, easier to remember, thanks a lot!

@ChrisGreer 3 жыл бұрын

Thanks for the comment!

@ayyapanr 5 жыл бұрын

How can someone not love this guy!

@abelardomartinez3711 3 жыл бұрын

Chris, eres el mejor. Apenas empiezo y entendí !!! gracias

@vishalgudhka4383 3 жыл бұрын

Hi Chris - Thank you for such an awesome video. Informative, Easy to understand and remember.

@ChrisGreer 3 жыл бұрын

Thank you for the kind feedback Vishal!

@johnnybegood8049 4 жыл бұрын

That's some real good stuff. Thanks for sharing!

@o4bfr 4 жыл бұрын

Very good video. Thanx Mr Chris.

@khulekani_ndlovu 2 жыл бұрын

Your courses on plural sight are the best. I've done other tutors' courses on plural sight and linked in learning which left me a bit confused since they hit the surface without much explanation. I just finished your "foundational TCP analysis with wireshark" course which is clear and the orderly step by step layout makes it easy to understand. Great job👌👌

@ChrisGreer 2 жыл бұрын

Thank you so much for taking the time to comment and give feedback. I really appreciate it.

@anshukhanna6041 5 жыл бұрын

Brilliant video. Please post the next part as well.

@ChintakindiManohar 4 жыл бұрын

You inspired me to learn more in depth TCP/IP

@kallikantzaros 2 жыл бұрын

I have learned so much from this video in just one hour. 'Explain me like I'm five' at its best. Thank you so much.

@ChrisGreer 2 жыл бұрын

That is how I have to learn everything - like I am five! 😜

@danonmily 3 жыл бұрын

Terrific presentation! Very insightful

3 ай бұрын

What awesome video, 10 years as network guy and now I'll make sure that I'll understand TCP, Thanks @ChrisGreer

@ChrisGreer 3 ай бұрын

Best to your TCP journey!

@franchise2570 2 жыл бұрын

Thank you Chris for this video, you're a great teacher. Your explanation of waiting on Layer 7 traffic to fall down to Layer 4 on the server side was hilarious. 😂

@ChrisGreer 2 жыл бұрын

Thank you! I'm really glad you liked it! Please feel free to share...

@yuriy8149 2 жыл бұрын

Super explanation. Thank you Chris!

@ChrisGreer 2 жыл бұрын

Glad it was helpful! Thank you!

@TalkingMisc 4 жыл бұрын

Thanks a lot for informative & detailed session.

@samirshaikh52 5 жыл бұрын

Hi Chris, Very informative video on TCP. Learned a lot. Thank you very much.

@ChrisGreer 5 жыл бұрын

Great Samir, Thanks for watching and for the comment. I'll post round 2 soon.

@yongkangchia1993 4 жыл бұрын

Great speech! Enjoyable even for a begineer like me

@mariamfirdous8456 2 жыл бұрын

oh gosh this is wonderful. clear out many things. working in ISP receiving client complaints how their replication cant be done cause they cant see full throughput. i wish i can send them this video to learn how network work and before blaming their ISP they need to check wats going on with their application.

@ChrisGreer 2 жыл бұрын

Great to hear you enjoyed the video! Yes please send it to whoever may benefit. Yeah I bet you get blamed for quite a bit that is not your fault!

@jasperbongertz4866 5 жыл бұрын

Hi Chris, great intro into TCP, I'll recommend it to anyone who asks me about TCP beginner talks ;-) But I think there's a small error at 1:01:17 - missing SACK options does not mean there are no fast retransmissions possible. The triple dup ack mechanism works without SACK, but it may lead to full retransmits from the gap. There are three flavors of retransmissions: time out based, fast retransmission triggered by triple duplicate ack, and SACK (which in turn doesn't even need a triple duplicate ack to signal loss)

@ChrisGreer 5 жыл бұрын

Thanks for the comment Jasper - I hadn't seen a stack not have the option but still do fast retrans yet. But hey if it's out there I want to be correct about it!

@chetandurgavale5623 2 жыл бұрын

What a lecture! Simply Amazing

@ChrisGreer 2 жыл бұрын

Thanks for the good vibes!

@i_tsyg2531 5 жыл бұрын

Excellent! Just wow!!

@billlawhorn3285 10 ай бұрын

Thanks so much Chris for sharing your expertise.

@ChrisGreer 10 ай бұрын

Glad it was helpful!

@vinhphung 3 жыл бұрын

Thanks for such helpful videos. You are awesome!

@scrummyvision Жыл бұрын

extremely helpful videos, love your passion for packets!

@ChrisGreer Жыл бұрын

Glad you like them!

@ankitsharma-ef3cs Жыл бұрын

Why is that only this much likes and comments for this video. It should be in Millions/Billion. Lots of Love from India....Ur awesome!😍

@PatrickLangendoen 5 жыл бұрын

Informative and brought in a very nice way. I'm excited to see part 2. Are you gonna share that second part here on KZfaq as well?

@manigandansrinivasan5194 2 жыл бұрын

I guess you don't know how Noble work you are doing .... I really appreciate the effort you put in to learn weeds of TCP and importantly sharing your knowledge..... God Bless .Keep going

@ChrisGreer 2 жыл бұрын

Thank you so much for the comment. I appreciate it!

@innuite 3 жыл бұрын

Why is that only 1.5K likes for this video. It should be in Millions!! ...and he repeats the questions clearly to answer..

@ChrisGreer 3 жыл бұрын

Thanks for the comment Arun!

@mayurhabbu7361 2 жыл бұрын

Chris, fantastic presentation . I really learned a lot .

@ChrisGreer 2 жыл бұрын

Glad it was helpful!

@samar103 5 жыл бұрын

This was awesome!!!

@sandeepaher5107 3 жыл бұрын

Bravo .. buddy you nailed it ... content to your style of explaining.. loved it all..... :)

@ChrisGreer 3 жыл бұрын

Thanks for the comment Sandeep! Glad the video helps.

@miladnouri9537 Жыл бұрын

Im not a native english and im not even so good in english but all these hard stuff with your teaching style, is so understandable. Thanks and i wish best for you.

@ChrisGreer Жыл бұрын

Thank you!

@joelourenco4621 4 жыл бұрын

Very good! Thank you.

@lucidboi5334 2 жыл бұрын

What a great speaker!

@453nabeel 5 жыл бұрын

Amazing Chris. This is brilliant. Really Geek stuff

@ChrisGreer 5 жыл бұрын

Thanks Nabeel - I try by best to geek-out but still not be boring!

@453nabeel 5 жыл бұрын

@@ChrisGreer Sir is it possible we could have more from you about traces , case studies etc. Do u have any training course ?

@ChrisGreer 5 жыл бұрын

@@453nabeel Yes sir! of course. I do have more training - remote, onsite, or on-demand. If you are interested in more please shoot me an email at packetpioneer@gmail.com or contact me through my website - www.packetpioneer.com. I'm happy to work with you to help you meet your Wireshark goals.

@rasb421 2 жыл бұрын

Very knowledgeable..Appreciate in sharing the knowledge

@ChrisGreer 2 жыл бұрын

Glad you like it!

@TruthYouNeed 2 жыл бұрын

Chris. Thank You for this.

@ChrisGreer 2 жыл бұрын

My pleasure!

@innbydelse 4 жыл бұрын

excellent presentation!

@lalosalamanca7131 2 жыл бұрын

David Bombal just sent me here. I thought I knew TCP/IP, apparently nope. Good content Chris.

@ChrisGreer 2 жыл бұрын

Awesome Andy! Great to have you on the channel. Thank you for stopping by.

@arnavgundewar3619 Жыл бұрын

Thanks for the help.

@franciscodeighton3223 3 жыл бұрын

First I thought "Over an hour, that's long...". Now I think "Could have been longer!!!" :-) :-) :-) Awesome presentation. Motivates to dig in! Many thanks!!! :-)

@ChrisGreer 3 жыл бұрын

Thanks for the comment Francisco! I appreciate it.

@hellodarknessmyoldfren 2 жыл бұрын

Nice. Also, dropping a link to pcaps you're using so we can follow by step-to-step in a video description would've been super cool.

@GCS1 Жыл бұрын

Fantastic teacher awesome session. Thanks.

@ChrisGreer Жыл бұрын

Thank you!

@vbp2610 2 жыл бұрын

thanks chris... well explained ....

@ChrisGreer 2 жыл бұрын

Glad it was helpful!

@KanekiSidibe 9 ай бұрын

This presentation is awesome. I wished you could teach me that in my class lecture

@georgesanderson918 3 жыл бұрын

I cannot thank you more!

@lokesh20verma 5 жыл бұрын

Hi Chris, Very nice presentation.. When you can share part-2?

@jhonycash6119 3 жыл бұрын

really nice conference! very helpful

@ChrisGreer 3 жыл бұрын

Glad it was helpful!

@CT-zq3kz 3 жыл бұрын

Excellent method of teaching

@ChrisGreer 3 жыл бұрын

Thank you for the comment!

@MandarDesai1919 2 ай бұрын

Superb video

@sridharnr1 5 жыл бұрын

Awesome video

@imransyed8766 3 жыл бұрын

He is Very good instructor !!!

@ChrisGreer 3 жыл бұрын

Thanks for the comment @imran! Glad it helped you.

@imransyed8766 3 жыл бұрын

@@ChrisGreer clarity in explaning concept was too good. Have a great day !!

@jairunet 2 жыл бұрын

Hello @Chris thanks for posting this great presentation, I learn something new and very interesting with each of your talks. Would you be able to point me to where I can learn to build profiles? I am basically used to using tcpdump in Linux but will be great to use wireshark as another tool to analyze the packets, and I believe that having the filters, colors and profiles set for each situation will optimize troubleshooting a lot and make it easier for other teams and management to have a better view and at least a bit of understanding on what they are seeing. Thank you very much in advance.

@parveshtaneja2005 3 жыл бұрын

Very good explanation Sir

@ChrisGreer 3 жыл бұрын

Thanks Parvesh! I appreciate the comment.

@filipersimoes 5 жыл бұрын

Awesome!!!

@patrickborys3490 Жыл бұрын

Awsome !!!!! Thank you !!!!

@ChrisGreer Жыл бұрын

You're welcome!

@olivier7593 5 ай бұрын

Im in the first few hours of learning to how to become a pen tester. If im honsest, this tcp thing looks relatively easy. I'm mostly worried about the command's i have to remember. A whole new language. Including phyton. But this is super interesting. Do you have tips and tricks, I've get what ipv4/ipv6, subnetting what a /20 a /24 network is. And how and why it's different, and what routing is, what a gre and ipsec tunnels is. What an handshake is, and what the window sizes and the multiplier is, The package size. I'm curious how to continue. Looking forward to learn way more about networking, testing kali, linux, understanding and writing code, discovering that I don't understand anything of this. And learning to understand. Love this journey so far... Thank you for this video and the collaborations you did with david bombal, and many others... Cheers!

@ramonnepomuceno5299 2 жыл бұрын

great talk!

@rohscx 2 жыл бұрын

Good stuff. Thanks

@ChrisGreer 2 жыл бұрын

Glad you enjoyed it!

@yuvarajthirunavukkarasu4932 5 жыл бұрын

great video

@shyamyadav-xd4zl 2 жыл бұрын

superb!!

@rmstech9933 28 күн бұрын

You are just awsome.

@kalaiyarasanmanoharan5880 5 жыл бұрын

Awesome Video !!!

@ChrisGreer 5 жыл бұрын

Thanks!

@kalaiyarasanmanoharan5880 5 жыл бұрын

Chris Greer We are eagerly waiting for the second part of the video 🙂

@ChrisGreer 5 жыл бұрын

No problem - I will post soon. I promise!

@romualdgarcia9108 3 жыл бұрын

merci beaucoup !

@damanv3493 4 жыл бұрын

Thnks Chris

@horaciosantana2153 Жыл бұрын

Awesome Chris, can you do a modbus analysis? It would be great

@olmikify Жыл бұрын

thank you

@manasacharya4554 2 жыл бұрын

Chris you are awesome. Can you please upload the packet capture?

@alejandroparrello6493 2 жыл бұрын

Hi Chris!! Excelent explanation!! I'm super noob in this sftuffs but i can learn many tips! I like your way to explain teacher 😆😆 very funny!! Pd: Sorry about mi poor english! Regards from Argentina 😉👏

@ChrisGreer 2 жыл бұрын

I'm glad you liked it!

@deepakpanwar6629 4 жыл бұрын

It's great presentation..I appreciate it.. Had a question can window scale be -1.

@deepakpanwar6629 4 жыл бұрын

Oops I got the ans....thanks..

@SantoshSharma 5 жыл бұрын

Hi Chris, nowadays i am watching lot of videos on wireshark. but your approach of understanding is unique. I really appreciate if you could please assist me on below. I was reported issue, where application team was facing duplicate transaction issue. and i was contacted to see if network is causing any issue. 4 servers are involved in this and i have taken wireshark capture on all 4 servers. but it is using SSL protocol which is encrypted. so as per my thinking i think we cannot come to know if duplication is happening by looking to TCP\IP packet only. could you please suggest me if it is possible.

@DarrienGlasser 2 жыл бұрын

Finally a good video

@ChrisGreer 2 жыл бұрын

Thanks for the comment sir!

@DarrienGlasser 2 жыл бұрын

@@ChrisGreer These videos helped me get an offer at Facebook. They are simply invaluable. I'm sure the real courses are even better! Thanks again for all of the help :)