Build a Network Packet Sniffer and Analyzer

Understanding what happens inside a network is crucial for diagnosing problems, detecting intrusions, and securing data. A packet sniffer allows cybersecurity professionals to inspect live traffic, analyze packet content, detect anomalies, and monitor unauthorized activity or data leakage.

This tool captures incoming and outgoing packets from network interfaces, parses protocol headers (TCP, IP, UDP, DNS, HTTP), and displays readable summaries. It can be extended to flag suspicious packets, export logs, or visualize traffic graphs.

The sniffer uses raw sockets or a library to intercept packets directly from the network interface. Each packet is parsed to extract headers and payload. The data is formatted and displayed in a dashboard or saved for offline analysis.

• Select network interface (e.g., eth0, wlan0) for sniffing.
• Capture packets in real time using low-level socket access or Scapy.
• Parse and display details like source/destination IP, protocol, and packet size.
• Allow filtering by protocol or IP to investigate specific flows.
• Log packet details and optionally visualize traffic trends or suspicious spikes.

• Scapy Packet Manipulation Library
• Pyshark (Python Wrapper for Tshark)
• Socket Programming in Python
• Wireshark Protocol Documentation
• Python Matplotlib Library