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NetMon: A Simple Windows SysAdmin Panel for Network Monitoring

NetMon is a lightweight and simple network monitoring tool designed to run on Windows, ideal for sysadmins and network professionals. It allows you to monitor system and network data locally through a Flask-based interface.

Note

This application is designed to run locally, not on a production server. The Flask development server is intentionally used.

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Features

• Monitor active network connections (TCP).
• View network adapter status and details.
• Retrieve system DNS and firewall information.
• Visualize recent network packet data.
• Localized, browser-accessible dashboard.

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Prerequisites

Before running NetMon, ensure you have the following installed:

• Python 3.7+ (recommended)
• pip (Python package manager)
• Windows operating system (for the PowerShell commands)

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Installation & Setup

1. Clone the repository

git clone https://github.com/DefinetlyNotAI/NetMon.git
cd NetMon

2. Install dependencies

Install required Python packages using pip:

pip install -r requirements.txt

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Usage

1. Run the application
   Start the network monitoring script:

   python NetMon.py

2. Access the dashboard
   In your browser, go to the following address:

   http://127.0.0.1:5000
   

   You can change the first part of the URL (127) to any number between 127 and 255. The port number must remain 5000.

3. Enjoy monitoring your network panel
   You will now see real-time network data and system information on the dashboard.

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Core Functionality

• PowerShell Integration: Executes PowerShell commands to retrieve network and system data on Windows.
• Network Monitoring: Captures active TCP connections and simulated packet data (future enhancements to support real packet capture).
• Flask Web Interface: Serves a local web interface displaying system and network data.

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API Endpoints

NetMon provides a couple of API endpoints to fetch system and network data:

• GET /api/system_info
  Returns a JSON object with the following information:

  • Network adapters
  • DNS servers
  • Active connections
  • Firewall rules

• GET /api/network_data
  Returns a JSON object containing:

  • Recent packet data (simulated)
  • Connection history (TCP connections)

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How It Works

PowerShell Commands

NetMon leverages PowerShell commands to extract key network and system information:

• Network Adapter Info: Lists active network adapters with name, status, and link speed.
• IP Address Info: Provides details of network interfaces and IP addresses.
• Active Connections: Tracks active TCP connections on the system.
• DNS Info: Retrieves DNS servers configured on the system.
• Firewall Rules: Shows enabled firewall rules.

Network Monitoring

NetMon continuously tracks active TCP connections and simulates packet data, capturing this information every second. It stores this data in deque structures to efficiently manage recent network activity and display it in real-time.

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Development & Contributions

NetMon is open-source and welcomes contributions. If you'd like to contribute, feel free to:

• Fork the repository
• Create a feature branch
• Submit a pull request

Please ensure any changes are well-tested and documented.

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Troubleshooting

• Issue: "The application is not accessible on the browser."

  • Solution: Ensure you are running the Flask application on 127.0.0.1 and port 5000.

• Issue: "PowerShell command errors."

  • Solution: Check that PowerShell is available on your system, and that the necessary network configuration is accessible.

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License

This project is licensed under the MIT License. See the LICENSE file for more details.

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