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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Creating a separate network for public facing servers (DMZ)

A common practice for public facing servers is to have a totally separate network for the public facing servers so in the event of unauthorized privileged execution, the attacker won’t be able to access the precious internal network resources.  This concept is called a DMZ (de-militarized zone).  I decided to set this up myself because I love networking and it is something I always wanted to try.  I configured and set it all up in a virtualized Xen environment on my 2 1U rack servers.

 

The Idea was simple, set something up like this:NetworkInfrastructurePost

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