Computer Networking (Deepdive)

Рет қаралды 103,314

Күн бұрын

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In this video I try to explain computer networking with pieces of paper. This hopefully explains why in some universities the OSi layer model is taught. While I find the OSI model kinda useless, "thinking in layers" is extremely important. Blackboxes of layers allow us to focus on what matters, and ignore anything else.
HTTP Desync Attack Explained With Paper: • HTTP Desync Attack Exp...
HTTP Request Smuggling - False Positives: • HTTP Request Smuggling...
Chapters:
00:00 - Intro
00:42 - Send Data Between Computers (Physical Layer)
01:31 - Find The Correct Computers (IP Layer)
04:24 - Identify The Target Program (TCP Layer)
06:40 - Think in Blackboxes!
07:24 - TCP Layer Blackbox
08:32 - Linux Kernel Implementing The Layers
09:54 - netcat Example
10:30 - Looking at Packet with Wireshark
11:04 - Layers are Everywhere (Phone Call)
11:49 - Hacking with Blackboxes
13:11 - Outro
13:28 - LiveOverfont Ad
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Пікірлер: 270

@J0R1AN Жыл бұрын

Less related to networking, but another video idea in this style might be explaining the difference between Encoding, Encryption, Hashing etc. Those terms get misused a lot and are really useful to understand

@NoxiousPluK Жыл бұрын

Just like authentication and authorization

@overlisted Жыл бұрын

@@NoxiousPluK "auth"

@Nunya58294 Жыл бұрын

@@overlisted Authentication*

@senzmaki4890 Жыл бұрын

@@Nunya58294 "auth"

@itech40 8 ай бұрын

Great idea!

@NoblePineapples Жыл бұрын

Been watching your content for a couple years now and I am absolutely floored with the change in quality and presentation you've made over time. I am excited to see what you create in the future. I have been a big fan of your Minecraft stuff, it used to be a big part of my life way back in the alpha days when a friend and I used to run a server. Edit: The advertisement at the end was awesome!

@AvinashKumar-fe8xb Жыл бұрын

Taking a minute to appreciate the video production quality with all that animations and actions in tile bars, OG work

@gradientO Жыл бұрын

Absolutely loving these Deepdive series

@kjartannn Жыл бұрын

Can't wait for you to explain routing! This video was great :)

@0xbro Жыл бұрын

Damn! The "LiveOverfont" ad is cool AF and the font itself fit perfeclty! Each new video is more and more enjoyable to watch, keep it up!

@mu11668B Жыл бұрын

Ngl even the ads on your channel are one of the best I've ever seen! Great work!

@shin-jo2801 Жыл бұрын

you explained this sooooo good. makes me understand more about what my uni prof was trying to explain for the past month or so in just 13 minutes

@Code12x Жыл бұрын

Your explanations are some of the best out there! I'm looking forward very much for the tunneling video, I already know it'll be awesome! Also, ever since I got Liveoverfont, I've been programming 10x more efficient!

@supernovaw39 Жыл бұрын

This is amazing! You're doing a good job at explaining it and making it seem not complex like it does at first.

@vidalion Жыл бұрын

I was just assigned uni coursework on this very topic, video timing couldn't be more perfect. Happy New Year!

@hunterdapenguin Жыл бұрын

you are making me starting thinking i know everything about computers obviously I don't but dumbed down explanations like this makes it so everything just makes since and helps me understand better with what I don't know thanks for making these videos man : )

@user-yg9lp8xj6p 2 ай бұрын

this is what i have been missing in my learning journy. Thank you liveOverflow. And please , never quite making these videos. This is what i need.

@rad6626 Жыл бұрын

always love seeing this guys latest uploads :)

@gmeister3022 Жыл бұрын

Love the Deepdive series. Please, keep it up.

@AbuIshaq1441 Жыл бұрын

one of the best expalanation ive ever seen about ISO/OSI Modell

@shriyanshgupta9951 Жыл бұрын

Thank you LiveOwerflow , I was looking for this exact video , I was not able to understand it before but not its all clear !! Thanks a lot !! I hope you will keep this good work up !! 👏👏👏👏👏👏

@1newcyber Жыл бұрын

I love the way you have just explained things in details, as an ethical hacker/Pentester I love the small details which don't seems to matter but they matter a lot.👍👏👏

@himashhimash6017 Жыл бұрын

One of the best-ever explanations for layers ....

@glq-xz9de 9 ай бұрын

i have some basic concept about 4-layer of computer network. but this video still impress me alot ! what a wondeful discovery of journey in computer network ! really high quality video !

@swetanksoni3521 Жыл бұрын

best simplified video ever on Computer Networking... I hope you will continue to add more content on "General Security Education".. i will definitely share this over my network. Amazing Work!!!!

@universal4334 2 күн бұрын

Wah! Appreciate your effort. It's been years that i was thinking how tcp talking to tcp possible. You cleared out that abstraction.

@naruto5437 Ай бұрын

this is amazing ...thanks for putting hardwork and making this great content free

@homere3931 Жыл бұрын

Again an awesome video! You really have a talent to explain things, thank you so much for this. Since you asked for a topic suggestion, I always struggle with certificates 🤷‍♂

@libyanpro9621 Жыл бұрын

You make every thing easy to learn , Thank you for that i hope you never stop , i realy enjoy

@Shuvooa Жыл бұрын

Your videos I always look up to. Please make series on Networking. We are badly in need of it.

@Shhluger Жыл бұрын

It clicks only when I watch your videos! Thanks for sharing your understanding of this world!

@benfrese3573 Жыл бұрын

Very good video again. This is top-tier educational content and I can't wait for the next one. Your mum must be proud!

@mikeyjohnson5888 3 ай бұрын

I have the model down through rote memorization but I must say your explanations make it far more intuitive.

@losocio1000 14 сағат бұрын

You explained this way better than my uni prof. Thanks!

@nickravesh Жыл бұрын

Good work, it was helpful and easy to understand. I also loved the small animations you created. for the suggestion I would say SSL and different kinds of it are confusing for me, I think it's worth a video. Thanks!

@rasmusmose8059 Жыл бұрын

Always great to watch your videos!

@shell102 7 ай бұрын

loved the font ad at the end !

@marianonicolini8119 Жыл бұрын

This series are insane, thank you so much

@LeBogo Жыл бұрын

This is the perfect video for learning for my networking exam. Thanks! :D

@uwiqgfu7epvnsbnld259 Жыл бұрын

bro die deepdives sind richtig gut, weiter so!

@MasonSchmidgall Жыл бұрын

I can see why you did it, but even implying for simplicity that switches look at IP addresses is definitely going to make any network admin cringe. However, the main point of the video is that most hackers don't need to know how their packets are transmitted and just need to know general information about how the protocol works. Since accepting abstraction as a hacker (most the time) appears to be the main thesis of this video, this video works. Networking can be a very dry topic. Networking 1 was the only class I've ever taken where the professor had to give us a 5 minute break in the middle so we didn't fall asleep. And that was only the first 3 of ~16 total credit hours worth of classes I needed on networking for my undergrad. So tl;dr: This video is for hackers who don't know anything about networking. It is a deep dive, but networking is so deep a subject that this barely scratches the surface.

@SwordQuake2 Жыл бұрын

Awww, I really hoped you'd explain OSI layers 5, 6, and 7. I never understood why they need to be separate.

@benfrese3573 Жыл бұрын

I agree, a deeper dive into the other layers would be much appreciated.

@dusdee3315 Жыл бұрын

Layers 5-7 I could understand why they were initially separated, because there used to be separate protocols for session management (5) and data transformation (6). I don't think the ordering of the upper 3 layers is as important anymore because now many things are just HTTP REST API's of some sort. Sessions are often managed by the application themselves by using Cookies, bearer tokens (JWT) or some other stateful/stateless implementation. And while TLS is regarded as a Layer 6 protocol, doing things like JSON, XML, YAML transformation can apply here too. I think the utility of being able to cram anything into a TCP connection on top of HTTP being a simple request/response model helped it gain popularity and with respect to an HTTP stack, separating "Application" into 3 layers is not very useful as it shouldn't concern Network Engineers who should be focused on layers 1-4. Just the same as how developers shouldn't be worried about bits-on-the-wire and how switches/routers work.

@skwalex Жыл бұрын

Your videos are always so interesting! I love It!!

@amarboparai4159 3 ай бұрын

Best explanation about computer networking on KZfaq.

@alexandersumczynski7477 Жыл бұрын

I love these kinds of videos, keep up the good work and I am excited for the next video😊

@_CryptoCat Жыл бұрын

Awesome as always! Very entertaining advert as well 😅

@ThePowerRanger Жыл бұрын

Loved the ad. Border Gateway Protocol(BGP) would be a nice topic.

@choisecurity Жыл бұрын

What a great content. Really wish I had these type of resources back in school. I had to buy a notebook and draw all of these concepts with my shitty drawing skills to make my brain understand the concepts. Textbooks and professor presentations are nice, but these visual representations are great. Really helps students to understand abstract concepts with real world graphics.

@feelsunbreeze 9 ай бұрын

Such a beautiful explanation!

@J0R1AN Жыл бұрын

The LiveOverfont looks really good!

@AshtonSnapp Жыл бұрын

You can think of it like taking a letter and wrapping it in envelopes, with each envelope containing addressing information. First it gets wrapped in a TCP or UDP envelope, then that gets wrapped in an IP envelope, then THAT gets wrapped in an Ethernet or WiFi envelope, and then that gets passed to your mail courier.

@BurgerKingHarkinian Жыл бұрын

Much better visual representation of what's actually going on imho

@uriumkotil6915 Жыл бұрын

Amazing Series! Great explanation, even newbies gon understand it. Keep it up :)

@CosmodiumCS Жыл бұрын

love the advert at the end ha! great video as always :D

@cangozpinar Жыл бұрын

Your content is crazy good, thank you !

@chrisjames278 Жыл бұрын

Great high level overview. Thanks

@pauleth Жыл бұрын

you have brought yourself to the next level

@nakulchauhan6713 Жыл бұрын

Exceptional work. Everything made easy.

@TechnicalHeavenSM Жыл бұрын

😍😍 Thank you so much for making this video... I've always had confusion about it.

@urrahman196 Жыл бұрын

Great video. Please make such kind of easy understanding video more on networking & (ssh, socket etc) stuffs

@anatoliipipko7258 3 ай бұрын

This is a great explanation. Thank you!

@gustavosimoes9755 Жыл бұрын

I just start watching this video and I already gave a like for 2 reasons. First and more important it is a LIveOverflow video, so it is guarantee that it would be a super hight content quality Senconde and funniest, the work this guy did to record himself being a computer and send and receiving message hahahahaah

@SWinxyTheCat Жыл бұрын

Wow. This makes *so much sense* now. I feel... enlightened!

@ndm13 Жыл бұрын

The thing that made networking click for me more than anything else was looking at full software implementations like overlay and alternate networks. Coming from Java, the I2P source code went a long way. It might be nice to cover it from this perspective, as it not only recreates the different layers but also actively addresses some common problems as security issues.

@ba8e Жыл бұрын

Excellent explanation! Thank you so much.

@FalcoGer Жыл бұрын

it sometimes is interesting to see the protocol in order to break it. It isn't always the application layer with the exploit, the protocol itself can also be vulnerable, such as sending strange URLs and URIs to a webserver attacking the http layer implementation, or SYN flooding or SYN port scanning attacking the TCP layer directly without any application ever knowing about that it's happening because a full connection is never made.

@flyviawall4053 Жыл бұрын

I always have an analogy in my head: a person sitting in a room without window, only communicate with the rest of world through a small hole. you can only send/receive go chess one by one. Then, how to solve problems like: information integrity, addressing, multiplexing etc? that’s the OSI model. In my opinion this analogy is quite accurate for electronics communication, meaning almost all these devices using wire and electrical signal to talk(Ethernet, TTL, SATA etc.) face to same problem/concept(or wireless connection mostly abstract a wire).

@mehrabhasan5773 Жыл бұрын

More of these deep dives videos please.

@bipinmaharjan4090 Жыл бұрын

This is a really good video about networking. ❤️

@yosiyosiro3866 Жыл бұрын

Thank you, what an amazing explanation and insight!

@Nanagos Жыл бұрын

That ad at the end is hilarious, I like it 😅

@davitqavtaridze1466 Жыл бұрын

Looking forward to next video👏🏻

@RichardsonASilva 3 ай бұрын

Awsome. Great explanation.

@user-ie5xy3mv4g 11 ай бұрын

you're really good at teaching

@OliverWells-ly6zu 6 ай бұрын

beautifully explained, thank you!

@markuscwatson Жыл бұрын

I love this channel.

@ivanbodnar3793 Жыл бұрын

Awesome explanation

@rebontadeb Жыл бұрын

This Video needs to reach to everyone .

@Bits32 Жыл бұрын

Excellent content ! Thank you for this.

@claasdeboer1843 Жыл бұрын

The layer explanation using little humans that all have their own task gave "Sendung mit der Maus" Vibes and i love it!

@tajsec498 Жыл бұрын

awesome deep dives, still I can't understand these things very well, continue these deepdivess

@leroyjameshopkins5164 Жыл бұрын

What are some CTFs that you would recommend to learn about network security (port scanning, packet spoofing etc.)? I can't find any good CTFs except for the Network section of Root-Me.

@janaakhterov Жыл бұрын

I ❤your explanations!

@afik3447 Жыл бұрын

crazy video, really good stuff

@yuk4z3 Жыл бұрын

Excellent video

@MisterQuacker Жыл бұрын

Very helpful

@scope_sweeper Жыл бұрын

This is so much better than what my networking teacher told me

@rodcosta290 2 ай бұрын

Thx alot! This cleared lots of things for me :D

@Jorfy Жыл бұрын

Bro i hope he makes like really indef videos about some of this stuff its all so intresting and he makes it so anyone can understand it

@cyrustakem7993 Жыл бұрын

damn, that end ad was super cool

@anamoly01 Жыл бұрын

Great video sir 👏👏 the hackers touch is super. please pick “sys calls” as topic for next as it is confusing to know how sys calls interacts with application in various operating systems. i vaguely know there is a lot of common things

@nyamnyamish Жыл бұрын

Thank you, very helpful. 💕

@mohamedhabas7391 Жыл бұрын

this is pretty cool, and easy to absorb :)

@TheGrimravager Жыл бұрын

Reading the title got me so hyped. I've been wanting to learn more about networking for a while now and have so far struggled to find comprehensive resources that connect well for me. (No pun intended). I've yet to watch the video, but I've already got this feeling it'll be the thing Ive been looking for. Thanks LiveOverflow, please keep making awesome content

@lonnybulldozer8426 Жыл бұрын

I recommend the textbook, Computer Networking: A Top Down Approach. This is the resource you've been looking for.

@TheGrimravager Жыл бұрын

@@lonnybulldozer8426 Thanks, I'll check it out!

@rizkynathamael5333 Жыл бұрын

I like liveoverflow because this make me easy to understand

@Wielorybkek Жыл бұрын

awesome content!

@AdityaMehendale Жыл бұрын

Looking forward to your next video! I am considering building a "sandbox" WiFi network at home using an old router for RasPicoWs and ESP32s. Would love to hear how to best bridge this sandbox-network to the main WiFi network.

@noctavel Жыл бұрын

Brilliant, thank you so much!

@Mahfoudh94 Жыл бұрын

Thank you very much, you are the blessing we need, just at the right time to save us from indian talk and abstract college teaching, wish you all goods.