Net-Watch

A simple but powerful GUI tool to monitor and analyze network traffic in real-time. Built with Python, Tkinter, and Scapy.

Features

• Live Packet Capture: Capture network traffic from any interface
• Protocol Analysis: Identify TCP, UDP, ICMP, and ARP traffic
• Anomaly Detection: Machine learning-based detection of suspicious traffic
• Real-time Stats: Live counters for packets, bytes, and protocols
• Dark/Light Theme: Toggle between dark and light modes
• Packet Details: Inspect individual packets with hex/ASCII view

Installation

1. Install Python

Make sure you have Python 3.8 or higher installed.

2. Install Required Packages

Open terminal/command prompt and run:

pip install scapy matplotlib pandas numpy scikit-learn psutil

3. Run the Application

python network_analyzer.py

Quick Start Guide

Step 1: Select Network Interface

1. Click "Select Interface" button
2. Choose your network interface from the list (e.g., "Wi-Fi", "Ethernet")
3. Click "Select"

Step 2: Start Capture

1. Click "▶ Start Capture" button
2. Watch packets appear in real-time

Step 3: Analyze Traffic

• View Packets: See captured packets in the main list
• Packet Details: Click any packet to see detailed information
• Statistics: Monitor packet counts in the dashboard
• Anomalies: Look for ⚠️ marks next to suspicious packets

Step 4: Stop & Export

1. Click "⏹ Stop Capture" when done
2. Use "Clear" button to reset
3. Data is automatically saved for this session

Basic Troubleshooting

"No interfaces found" error

• Run as administrator (Windows) or use sudo (Linux/Mac)
• Make sure you're connected to a network

"Scapy not working"

On Windows, install Npcap (not WinPcap): https://npcap.com/

App is slow

• Reduce captured packets using filters
• Close other network-intensive apps

Common Use Cases

• Network Troubleshooting: See what's happening on your network
• Security Monitoring: Detect unusual traffic patterns
• Learning Tool: Understand how networks work
• Application Debugging: Monitor app network usage

Tips

• Use filters to focus on specific IPs or ports
• Double-click packets for detailed view
• Toggle theme with the sun/moon button
• Start with small captures to learn the interface

Legal Notice

Only capture traffic on networks you own or have permission to monitor. Respect privacy laws in your area.

Need Help?

1. Check the troubleshooting section above
2. Make sure all packages are installed
3. Try running as administrator
4. Restart the application

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Simple Command to Run:

python network_analyzer.py

That's it! Start analyzing your network traffic in minutes.