NetVision

NetVision is a comprehensive network monitoring and traffic analysis tool that provides real-time visibility into your local network. It captures and analyzes network packets, displays protocol distribution, identifies active devices, and helps identify potential network issues.

Features

• Network Traffic Monitoring: Captures and logs network packets in real-time.
• Protocol Analysis: Visualizes the distribution of network protocols (TCP, UDP, etc.).
• Device Discovery: Scans and identifies all active devices on your network.
• Top Talkers: Identifies the most active IP addresses on your network.
• Interactive Dashboard: Web-based visualization with real-time data updates.
• Performance Monitoring:
  • Latency measurement.
  • Packet loss detection.
  • Network jitter calculation.
  • DNS resolution time.
  • Connection establishment time.
• Bandwidth Analysis: Monitors upload/download rates for each device.
• Connection Tracking: Records connection durations, frequencies, and patterns.
• Comprehensive Metrics: Includes connection statistics, history, and performance indicators.

Prerequisites

• Python 3.8+
• Nmap installed on your system (required for network scanning):
  • Ubuntu/Debian: sudo apt-get install nmap
  • Fedora/RHEL: sudo dnf install nmap
  • macOS: brew install nmap
  • Windows: Download from https://nmap.org/download.html
• Admin/root privileges (required for packet capturing).

Installation

1. Clone this repository and cd into the Netvision directory:

2. Install required Python packages:

   pip install -r requirements.txt

   Or use a virtual environment (recommended):

   python -m venv venv
   source venv/bin/activate  # On Linux/Mac
   venv\Scripts\activate     # On Windows
   pip install -r requirements.txt

Usage

Run the dashboard application with admin/root privileges:

# If using the system Python installation:
sudo python3 src/dashboard.py

# If using a virtual environment on Linux/Mac:
sudo $(which python) src/dashboard.py

# On Windows (run Command Prompt or PowerShell as Administrator):
python src/dashboard.py

The application will:

• Scan your network for active devices.
• Start monitoring network traffic.
• Begin collecting performance metrics.
• Display real-time updates in the dashboard.

Press Ctrl+C to stop the application.

Then open your web browser and navigate to:

http://localhost:8050

The dashboard provides:

• Active device list and top talkers.
• Real-time bandwidth usage graphs.
• Protocol distribution charts.
• Connection statistics and history.
• Comprehensive performance metrics:
  • Network latency.
  • Packet loss.
  • Network jitter.
  • DNS resolution times.
  • Connection establishment times.

Configuration

Modify the NETWORK_RANGE variable in src/config.py to match your local network:

NETWORK_RANGE = "192.168.1.0/24"  # Change to match your network

Common network ranges:

• "192.168.0.0/24" or "192.168.1.0/24" for most home networks.
• "10.0.0.0/24" for some ISP-provided routers.
• "172.16.0.0/16" for certain corporate networks.