"Pack Sniffer"

 

Packet Sniffer Project

Project Overview

This project focuses on developing a packet sniffer to capture and analyze network packets in real-time. It inspects Ethernet frames and identifies various IP and transport layer protocols such as UDP, TCP, and ICMP using a Python script. The project consists of two parts:

  1. sniffer.py: Captures and dissects network traffic.
  2. info2.py & selenium1.py: Analyzes UDP packets (particularly DNS requests) and captures screenshots of web pages using Selenium.

How the Code Works

First Part: sniffer.py

This Python script captures and analyzes network traffic:

  1. Socket Creation: Establishes a socket to capture raw network traffic.
  2. Traffic Capture: Listens to and captures packets from the network.
  3. Ethernet Frame Unpacking: Extracts and decodes Ethernet frame information.
  4. Protocol Analysis: Determines the protocol used (TCP, UDP, ICMP, etc.) and analyzes each packet.
  5. Output Formatting: Displays packet details such as Ethernet frame, IPv4 packet data, and protocol-specific details like TCP flags or UDP data.

Second Part: info2.py & selenium1.py

  • info2.py: Sniffs UDP traffic (specifically DNS requests) and logs URLs from the packet payloads into a file.
  • selenium1.py: Automates the browser using Selenium to take screenshots of the web pages corresponding to the captured URLs.

How to Run the Code

First Program (sniffer.py)

  1. Install the required library:

    pip install socket

  2. Run the script with administrator privileges:

    sudo python sniffer.py

  3. While the script is running, generate network traffic by browsing different websites.

Second Program (info2.py & selenium1.py)

  1. Place the folder sniffer in your main user home directory:

    cd $HOME
cd sniffer

  2. Run the following command:

    ./start.sh

    This will install all necessary dependencies and start the program.

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