How TCP Works - Acknowledgment Numbers

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Let's analyze how Acknowledgement Numbers in TCP Work. This skill is very important in understanding how TCP ensures the reliable transfer of data.

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damn! this is CCIE stuff right here. top man, Chris Greer! can't thank you enough.

semtex

nice to see another decent channel for these networking topics =) subbed!

ziesek

I acknowledge this was a great video. thanks

pantelisvasileiadis

Chris is a Transport Layer God. You are a TLG😃. Thank you so much.

devislight

Thanks for the Knowledge sharing Chris, thanks

akhoonrafiq

Hello, thank you for your video. I just wanted to know (if we take packet number 4 and 5) : How does the server ensures that it fully receives the packet ? Does the client check that the ACK of packet 5 is indeed equal to last client sequence number + size of the packet (i.e 446 = 1 + 445) ?

And also, does the client and server keep track of each other sequence number, so that it can acknowledge the right number ?

y.

Chris, why client didn't acknowledge packet no. 6 from the server? It only acknowledge packet no. 7?

hilalsaeed

thank you very much . i also can't thank you enough

Udaridamarakula

Hi Chris, your video courses are awesome. I would like to know which microphone you are using for audio recording.

WILL_Labscom

Hi Chris, I've been following your videos and its great! I wonder if you can make a wireshark video specific to Security, like for example attacks using smb, mimikatz, netcat, and if they dump and harvest any informations. It would be interesting!

hoaxsneaker

Hi Chris,
Your videos are awsome..
I am using Wireshark ver3.4.4 in the bottom left there is no option of TCP Advanced in profile. Can you please help where this option is in this version.

ashishsolanki