MitM Rpi Passive Ethernet Sniffer

In the movies you might have seen those devices spys place to sniff a computers network connection by sitting in the middle of their ethernet connection.  I thought this would be cool to do and it turned out to be super easy to do with the right commands on a raspberry pi.  There are also some awesome very practical uses for something so low cost and cheap to run like this.

MiTM Rpi

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Wifi to Ethernet with Rpi

My internet went out the other day, and while I could just use my laptop over a mobile hotspot, I kinda just felt like using my desktop.  So, since my desktop doesn’t have wifi, and I wanted to take the challenge, I decided to try getting an Ethernet connection over the 4G hotspot.  The idea was this, essentially extending a wifi network to Ethernet:

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