Port Knocking Attack | Ryan's CTF [17] Knock-Knock FINALE 

That base64 thing was so good :D. Thanks for making such great videos.

you bastard

Finally some video worth watching! Keep up the good work!

This was such a good one! Learnt a lot

Saved me here!! I made new adaptations and it's running as I want!! Thanks!!!

But actual port knocking using knockd or something wouldn't tell you if the port is open or not plus the port sequence can be generated too

Exquisite stuff!

Dude that was awesome. I love the python editor, its so colorful, and the way you move so smoothly through it. I'm starting to read black hat python for pentesting. Do you think that will help me understand better how to write those kind of scripts? I'm obviously going to finish all the overthewire challenges. I wonder though if there are just strictly python challenges alone? And if so could you maybe name one or two beginner type challenges. Thanks. Again this was a great video.

this is some elite stuff

awesome!

So cool

This was good.

why scanning process so quickly on that ranges? :v

that base64 copy/paste was bananas !!!

Which is the page?

why is python 2 usage still so common...

i want to see this kind of video on Windows

great! I will refer anybody that wants to learn python in 20 mins...lol

it's quicker to just base64 -w 0 x

yeah good luck getting into a real server with knockd configured to the MAX with no other ports running on that box. you're NEVER going to guess the sequence plus it can be configured with two other settings that you overlooked because you want to demonstrate how you could break knockd: that is, a timeout of the sequence. good luck with that permutation loop. i can set my seq timeout to 1 second. if you dont knock within 1 second, you're done. that loop will take several minutes to complete only to disappoint you. and the second setting is basically TCPFlags that can be set. if you dont know this FLAG, you aint gettin a glimpse of my door!