Wireshark 101: The OSI Model, Hak5 116

[@lurker5019]

Frames are not in the physical layer of the OSI (layer 1). They’re in the datalink (layer 2). The physical layer uses electrical signals/bits/symbols.

[@Awfki]

Good stuff but it's generally done bottom up. To remember use: Please Do Not Throw Sausage Pizza Away

[@Exidose]

Lmao my tutor taught me this last year, i thought it was just something he made up.

[@jankraus5525]

That depends on which end you are, the sending or receiving end. Both are correct.

[@DS-ce4um]

Not to be nit-picky, but frames are on the data-link layer and ethernet is technically the physical layer. Layer 1= Bits Layer 2= Frames Layer 3= Packets Layer 4= Segments Layers 5-7= Data Wireshark labels things a little strangely so it can be misleading, just wanted to clarify that for anyone studying the OSI model.

[@HansJacobEnemark]

I've used Wireshark regularly and the pcap files during my BSc studies. A cool feature is the TCP conversation visualization. I don't specifially know where you can find it, but it matches packets sent back and forth between the local computer and server. Worth a look.

[@BrianVandrian]

Can't get video to play. It plays either an AllState ad and then goes nowhere displaying the red youtube play button. If I press it reload the page etc etc it just replays the ad. Can't watch.

[@KowboyUSA]

Good video. It's been awhile since I've messed around with packet sniffers so this has been an excellent refresher. A future video with tips for spotting malicious activity would also be useful.

[@Dobbs6651]

Thanks, great video ! Will share.

[@jhonmsha]

Thanks finally i got idea about OSI!!!

[@davidr.flores2043]

Gracias Shannon! Muy bueno, !

[@hak5]

+David Flores Thanks David!

[@henkroggeman]

Hi Shannon, according to a Cisco course I followed some time ago, SSL is on the presentation layer, not the session layer. Is this correct?

[@nilpo19]

It's open to interpretation, but strictly speaking SSL should probably be on the Session layer since it is a wrapper for HTTP. However, you could argue that it is Session, Presentation, or even Application. SSL is one of those fun little gray areas. The OSI Model is just that, a model. It's open to interpretation and not everything fits it just perfectly.

[@m1stax-pl01t7]

All People Seem To Need Data Processing Application -> Presentation -> Session -> Transport -> Network -> Data-link -> Physical

[@quirkyquester]

great content :)

[@napalmwedding]

People Don't Need Ten Selfies Posing Awkwardly.

[@Satscape]

Installed this on Mint Linux, right away said it's not authorized, I google a bit and there seems to be crazy long stuff you have to do to give the app access to your wifi.....OR "sudo wireshark" - But this seems frowned upon...so how about one episode in the series where you show us a nice easy way to get this up and running on Linux...and stop using Windows!...does Mr Kitchen use windows?!...I bet he doesn't.....Love the show, Scott in the UK (inc. Scotland)

[@ShannonMorse]

We use all operating systems in the studio. I've been using my windows laptop lately because it's my default OS for my SDR series, and all has the best hardware. Yes, I'm aware can also dual boot into Linux as well, but I already did a Wireshark tutorial for linux back in 2012; kzbin.info/www/bejne/bImYhaqsfL17hpI

[@MrSlowestD16]

You cannot easily get around that requirement of running 'sudo'. Access to the lower layers (I believe transport and lower, but it may be a lower layer) requires kernel mode privileges. To do so, you need the root password, which you enter when you use 'sudo' to launch it. . I'm not sure who told you 'sudo' is "frowned upon", but it's not - it's necessary in some instances, such as examining low levels of the OSI layer which reside only inside kernel mode space and aren't exposed directly to user mode.

[@vadimabrams]

great videos, is it possible to sniffing all the network with wireshark?

[@garryyarber4446]

I'm curious as to how Wireshark works, can you do a video just for the beginners?

[@samvong2279]

UPC eye 24434? Isbn Prinn Clralidt

[@ISMAEL6201]

MOre MOre More

[@ramuk-]

All People Seem To Need Data Processing

[@shaneli2264]

3146 operating system here

[@erinclay8312]

I'll take what she's having!

[@sathishdamodaran9028]

Too much GoToAssist Ads :-(

[@alihsanelmas]

bu kadına yumruk atasın geliyor ama bir yandan da videoları iyi hazırlamış kereta...

[@lawsonpoling8880]

Ne demek yumruk atılmış?

[@lawsonpoling8880]

Kadının yumruklu mu? Belki senden daha akıllıdır.

[@gregoriovazquez3775]

Mi amor... que chica me enamoré .... i am in love...

[@7th.Chosen]

good info :D but dayum if she had been my teacher way back when I learned networks... I probably wouldn't remember OSI by now... rofl her cuteness along with 'her technical knowledge' is kinda disturbing imo, one would think she's just a host reading screens, but that's kinda sexist... who would exploit females for spectator views? oh right... humans

[@hak5]

+7thChosen I guess it's a good thing I research, write, pre-produce, host, and post-produce ALL of my own content. There's too many bobble-heads in the world, someone's gotta show them it's not that hard to learn. - Shannon

[@7th.Chosen]

+Hak5 very cool, my props to you **takes off hat** ... loving the channel :) and you're right, there's waaay too many, go show'em good! ^^

[@sfurtado3]

+Hak5 nice

[@kenyajunior8942]

clear and fresh explanation..and your are cute. Thanks.

[@mauropoletto5113]

She's HOT!

[@iandsonmendes5989]

:-* linda !!!!