TCP Fundamentals Part 1 // TCP/IP Explained with Wireshark
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- Опубликовано: 29 июн 2024
- 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?
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![Gunna - back in the a [Official Video]](http://i.ytimg.com/vi/oBrbejOHjLw/mqdefault.jpg)
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.
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.
He repeats the questions! Good form sir, good form.
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.
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.
Whole world need trainers and teachers like you. You are awesome
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.
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.
Hats off Chris.. Thanks lot for this wonderful presentation.
This is fantastic stuff. Very helpful. Thank you!
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
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 !!
thanks for the comment Partha! I appreciate it. Make sure to check out my new Wireshark Masterclass too - ruclips.net/video/OU-A2EmVrKQ/видео.html
@@ChrisGreer Thanks for that link. I wouldn't miss it for anything.
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!!!!!!
I love this video, I wish I had it during my Computer and Network Security course last semester. Thanks for sharing.
Chris, I have learned a lot from you in this video that I have not learned in last 10 years. thanks
Typical great presentation from Chris. The guy is a consummate professional.
Absolutely fantastic explanation. Thank you!
That's some real good stuff. Thanks for sharing!
I feel as if I hit the motherlode of TCP and Wireshark knowledge with this presentation. Thanks, Chris!
James Boelter thanks for the comment!
How can someone not love this guy!
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.
Thanks for the comment! Glad the video helped.
Why is that only 1.5K likes for this video. It should be in Millions!! ...and he repeats the questions clearly to answer..
Thanks for the comment Arun!
This was SUCH a good video! I think your teaching style is excellent. Thank you for making this available.
Thank you for the comment Tristan!
Impressive style & content. Thanks so much for sharing this
Stellar public speaking and instruction. Glad I found this channel.
Glad you found it!
Very good video.
Thanx Mr Chris.
Nice presentation,I like the way your are explaining things in a simple way & Very informative video.Thank you so much
Brilliant video. Please post the next part as well.
It was an incredible session Chris, thank you for the great explanations and good humour.
Glad you enjoyed it!
Terrific presentation! Very insightful
Man Chris, you just nail it with expressions, easier to remember, thanks a lot!
Thanks for the comment!
Chris, eres el mejor. Apenas empiezo y entendí !!! gracias
Great, Thanks for sharing Chris... Love your enthusiasm, and the your joy of teaching the subject. Good Job!
Thanks for the comment Michael!
What awesome video, 10 years as network guy and now I'll make sure that I'll understand TCP, Thanks @ChrisGreer
Best to your TCP journey!
This was awesome!!!
Excellent! Just wow!!
Thanks for such helpful videos. You are awesome!
Thanks a lot for informative & detailed session.
You inspired me to learn more in depth TCP/IP
Hi Chris - Thank you for such an awesome video. Informative, Easy to understand and remember.
Thank you for the kind feedback Vishal!
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
Great speech! Enjoyable even for a begineer like me
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!😍
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.
Thank you for the comment Pablo - I will post round two soon!
Very good! Thank you.
Super explanation. Thank you Chris!
Glad it was helpful! Thank you!
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!
Thanks for the comment! I really appreciate the feedback.
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)
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!
Stopped and liked the video because it has been one of the best and informative video of how TCP works in Wireshark.
Thanks for the comment and for watching Manuel! Glad it helped you. Hope you like the rest of the content on the channel too.
Informative and brought in a very nice way. I'm excited to see part 2. Are you gonna share that second part here on RUclips as well?
What a great speaker!
Hi Chris, Very informative video on TCP. Learned a lot. Thank you very much.
Great Samir, Thanks for watching and for the comment. I'll post round 2 soon.
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.
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!
David Bombal just sent me here. I thought I knew TCP/IP, apparently nope. Good content Chris.
Awesome Andy! Great to have you on the channel. Thank you for stopping by.
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. 😂
Thank you! I'm really glad you liked it! Please feel free to share...
excellent presentation!
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.
That is how I have to learn everything - like I am five! 😜
extremely helpful videos, love your passion for packets!
Glad you like them!
Thanks for the help.
Chris, fantastic presentation . I really learned a lot .
Glad it was helpful!
Thanks so much Chris for sharing your expertise.
Glad it was helpful!
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.
Thank you!
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👌👌
Thank you so much for taking the time to comment and give feedback. I really appreciate it.
Chris. Thank You for this.
My pleasure!
What a lecture! Simply Amazing
Thanks for the good vibes!
Bravo .. buddy you nailed it ... content to your style of explaining.. loved it all..... :)
Thanks for the comment Sandeep! Glad the video helps.
I cannot thank you more!
Hi Chris, Very nice presentation.. When you can share part-2?
thanks chris... well explained ....
Glad it was helpful!
Awesome video
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!
This presentation is awesome. I wished you could teach me that in my class lecture
Fantastic teacher awesome session. Thanks.
Thank you!
Superb video
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
Thank you so much for the comment. I appreciate it!
great talk!
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.
Awesome!!!
Amazing Chris. This is brilliant. Really Geek stuff
Thanks Nabeel - I try by best to geek-out but still not be boring!
@@ChrisGreer Sir is it possible we could have more from you about traces , case studies etc. Do u have any training course ?
@@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.
Very knowledgeable..Appreciate in sharing the knowledge
Glad you like it!
Awsome !!!!! Thank you !!!!
You're welcome!
great video
superb!!
really nice conference! very helpful
Glad it was helpful!
First I thought "Over an hour, that's long...". Now I think "Could have been longer!!!" :-) :-) :-) Awesome presentation. Motivates to dig in! Many thanks!!! :-)
Thanks for the comment Francisco! I appreciate it.
Excellent method of teaching
Thank you for the comment!
Good stuff. Thanks
Glad you enjoyed it!
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.
Awesome Chris, can you do a modbus analysis? It would be great
You are just awsome.
merci beaucoup !
Chris you are awesome. Can you please upload the packet capture?
He is Very good instructor !!!
Thanks for the comment @imran! Glad it helped you.
@@ChrisGreer clarity in explaning concept was too good. Have a great day !!
thank you
Thnks Chris
Very good explanation Sir
Thanks Parvesh! I appreciate the comment.
Also nice merch, had to get me a shirt.
Awesome Video !!!
Thanks!
Chris Greer We are eagerly waiting for the second part of the video 🙂
No problem - I will post soon. I promise!
It is I, I am the TCP goblin! *Sage nod, hands on hips triumphantly*
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 😉👏
I'm glad you liked it!
I entitle my delta column with a Δ . Like the greek delta Δ. Yay unicode!
But if that's too uppercase for you then δ also will work. I just figured out in the midst of a 35 hour long packathon of looking at frames, with my vision going blurry and my mind actually starting to think Cisco is a real company I'll be able to make out Δ and what it stands for a little easier.
[placeholder for screenshot URL that is coming up]
About half an hour later I came up with a much better approach it seems. Just take the nerd fonts I already use for powerline, airline, sofaline, toiletline, lineline and use some of its extra icons and then install it as a font in Wireshakr. The delta is just much crispier. Oh and while I was at it I pulled a clock and replace time title with that too. I am currently brainstorming with chatgpt as to how source and destination can be represented by the icons.
Otherwise great conversation, dude! I'm a red teamer and the way you talk about TCP signifies that you have such extreme levels of expertise that you are like fluent in it. I'm probably gonna pull out my fountain pen anda take some notes tbh ans so far that's only been reserved for MIT OpenCourseWare stuff (like csail from original HP recording).
I just learned more about TCP in three bours binge-watching your videos than in the last like 10 years I think.
STRAIGHT FACTS at 21:30 - 21:40. I am nothing special when it comes to network security but EVERYONE in my workplace wants the scripts I made for automating network packet inspection and other tasks. One day I caved and said fine use this, 45 minutes later. I get a teams message "hey can you explain your script? i don't understand what it's looking for, how is that relevant?" All i wrote was "I don't have the time to explain it." It's like those people who get stuck on the "how to get started in (insert topic) videos" and tutorial videos. At some point you have to become curious yourself and dive headfirst.
I hear you.... Definitely true.
@@ChrisGreer Thanks for the response, you have amazing straight to the point content. I've recently been trying to make a department switch and your videos on TCP have helped me out substantially.