How TCP Works - Window Scaling Graph

Let's dig into the Window Scaling Graph and learn how to use it to measure the receive window on a target device, along with bytes out from a sending device. Sample trace file:

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[pedrojaviermunozgarcia]

Chris, I have gone through all your videos and I have nothing more to do than thank you. Great job, spotless and clear. You saved me a lot of time study time!!!

[AcTheMace]

Thanks!! Saved my grade for this homework.

[miguelzambrano]

Many thanks for these video Chris they are amazing!! I usually learn way better with videos than reading books many thanks for this content!

[mohitkhanna]

Very useful my friend. Simple. To the point. Informative. Crisp! Thanks for covering only a small module.

[spencerwilson-softwaredeve]

Awesome video, my instructor wants to make network security as confusing as possible it seems, you make it sound simple and now I understand what's going on. Thanks.

[netskills]

That's awesome that you share the trace file! Keep it up!

[remoscott]

Thank you again, Chris! Keep up the great work.

[lingfish]

Awesome stuff mate. Discovered you today; amongst all the noise and crap out there, you explain things well, even for this seasoned network guy ;)

[cabsandy]

Cracking short video Chris-and liking the new background and mic set-up. Looks like a nice desk as well! :-)

[nerfherder]

great vid! keep pounding us with tcp/ networking info.. it will stick, eventually!.. solid Volcom shirt too!

[juanparra]

Excelent video Chris. Thank you for your great explanation.

[smilefaxxe]

Thank you so much!!! This helped me a lot! ❤

[vikrantd]

Many thanks for ur video.. really amazing..is there any video to troubleshoot intermediate application issue in wireshark....

[ManideepLadi]

Thank you for this information. I have one question will be able to get Number of RTTs from Wireshark?

[VultUxTube]

Thank you for the videos! I try to follow what you explain, but the problem is what to do next? For example, a problem with retransmissions has been identified because the window size is small, how to fix it?

[yohanmeier]

hi chris, the green line which represents the tcp window is that of host which receives the data? for example one displays the graph in the direction PC1 towards PC2, the data in flight are those of the PC1 and the window of reception of the pc2?

[PacketBomb]

Have I just ignored Bytes Out or is it relatively new? Very cool

[jarbystark]

And what means if bytes cross the green line ? i saw it a couple of times in my caps, could it happen if windows size cant be calculated precisely because there is no syn-synack-ack in capture?

[gregnstuff]

Nice, can't wait to get a top zero window customer just to look at it in the 📊

[zelllers]

riverbed should just hire you honestly