Port knocking is "a method of externally opening ports on a firewall by generating a connection attempt on a set of prespecified closed ports." (https://en.wikipedia.org/wiki/Port_kn.... It is the digital equivalent of the secret knock you had growing up to grant access to your treehouse.

In this video, I explain why port knocking is important, how it works, and then run a demonstration in which I show opening and closing the port running a python webserver to show the resulting system behavior.

Also, I just got a green screen and am still figuring out the lighting and settings... but its super fun -- hopefully you enjoyed the intro!

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Timestamps
0:00 - Knock Knock
0:20 - Intro
0:39 - Remote connection overview
1:17 - Port knocking definition
1:43 - Demo description
2:01 - Knockd configuration
2:35 - Dockerfile
2:51 - Demo
3:18 - Additional applications
3:57 - Question of the week

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Channel Views: 10529

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