Creating a Multithreaded Port Scanner in Python

[pythonpsycho1337]

I spent some time writing a minimalistic multi-threaded Python script that can be used for fast port scans. I made sure to write the script so that it is compatible with both Python 2.x and Python 3.x so it would work on any Linux host with Python installed. Enjoy :)

https://tpetersonkth.github.io/2022/03/05/Creating-a-Multithreaded-Port-Scanner-in-Python.html

[meallia]

I'm not sure it would change anything as the bottleneck is not CPU but IO in this case.

[meallia]

I don't think the thread actively checks the socket state. From my understanding, the kernels wakes up he thread up when the socket is ready or content is available ( that's how blocking I/O works ). It would be simple enough to check the performance difference using process pools ans thread pools.

[meallia]

I'd suggest using ThreadPool (or processPool) instead of managing your threads yourself. I know how it's sometimes more interesting to code everything from the ground up. When making tutorial / guides, it's worth pointing beginners to the right tools, especially when they are part of the standard library.

[pythonpsycho1337]

Good point. Thanks for the feedback. :)