How to send raw network packets in Python with tun/tap

Hello! Recently I’ve been working on a project where I implement a bunch of tiny toy working versions of computer networking protocols in Python without using any libraries, as a way to explain how computer networking works. I’m still working on writing up that project, but today I wanted to talk about how to do the very first step: sending network packets in Python. In this post we’re going to send a SYN packet (the first packet in a TCP connection) from a tiny Python program, and get a reply f...

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