LAN - Monitor

My name is Josh Butcher and I am a Univeristy Student Studying IT Security With Forensics and currently Live in the UK.

My project consists of a basic design as shown below (I am wanting to adapt this to further it's usability), the concept and basic process behind it is that a it is a Packet monitoring PCB which will allow a remote connection to monitor network traffic physically on a binary/Hex scale allowing for a huge amount fo control and monitoring in terms of what you are passing over the network. Wether it is encrypted, salted or what type of Hash it is being sent thorugh. 

This could allow for a great number of testing and security audtiing of software/applications being made. I have curretnyl got to a point where iteration 1.0 is now working, Also uploaded below is an image of the packet captured using the device in HEX. However I am wanting to advance this into having a neweevr version which will do this remotly and dave it locally on an SD card of some kind, where as now the device is currently very manual.

Example of the current PCB 1.0 Version: (Basic)

The physical Design made 1.0 Version:

The Schematic View 1.0 Version:

Design of how this works fully:

Basic Understanding of How Infomation Is Passed (Router usually in between or Switch).

We can now use the LAN tap to look at what infomation is being sent between these computers/devices.

The computer with the Purple connection is the LAN tap device which is monitoring the traffic to look for flaws in application/bad encryption and what type of encrytpion. The data it captures is listed as an image below (Wireshark was used but with your help i'm wanting to make this native to the device for version 2.0.

What it was trying to do: (Netgear was broadcasting to other devices)

with the infomation:

So Where Am I now?

I have currently Tested the above PCB with th appropriate tests and It was a sucess, I was able to capture packets from a third party device and read it's Hex files (What data it sent). As shown below. I am wanting to make this into a standalone unit where no Wireshark is required and packets can be saved to an SD card.