This guide will show you how to create a small, packet capturing computer using a Raspberry Pi Zero combined with a passive lan tap. It’s meant to be used with power over ethernet compatible networking hardware, so you can power it directly through the ethernet cables, without any batteries or USB chargers.
You simply plug it in between two ethernet cables, and it automatically powers on and begins logging the traffic that passes through.
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Electronics — I touched my circuit, and now it glitches!
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Adafruit IoT Monthly — OpenCV Critter Cam, LoraWAN on Raspberry Pi 2040, and more!
Each Friday is PiDay here at Adafruit! Be sure to check out our posts, tutorials and new Raspberry Pi related products. Adafruit has the largest and best selection of Raspberry Pi accessories and all the code & tutorials to get you up and running in no time!
Not a safe implementation of a tap at all. It risks affecting the traffic and only captures traffic in one direction.