NetSentinel

Network Traffic Inspection & Policy Engine

A modern C++ Deep Packet Inspection (DPI) engine for analyzing, inspecting, and monitoring network traffic in real time. NetSentinel captures packets, parses network protocols, and provides a foundation for building network security, monitoring, and traffic analysis tools.

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Features

• Deep Packet Inspection (DPI)
• Live packet capture
• Ethernet frame parsing
• IPv4 packet parsing
• TCP protocol analysis
• UDP protocol analysis
• Packet statistics
• Command-line interface
• Modular C++ architecture

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Planned Features

• HTTP inspection
• DNS inspection
• ICMP support
• IPv6 support
• TLS detection
• Packet filtering
• Rule-based policy engine
• JSON export
• CSV export
• Logging
• Configuration support
• Multi-threaded packet processing

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Architecture

Packet Capture
        │
        ▼
Packet Parser
        │
        ▼
Protocol Analyzer
        │
        ▼
Policy Engine
        │
        ▼
Traffic Report

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Tech Stack

• C++
• Npcap / libpcap
• CMake
• Git
• GitHub

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Project Structure

src/
include/
docs/
README.md
CMakeLists.txt

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Screenshots

Coming Soon

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Roadmap

• Initial project setup
• GitHub repository
• Improve parser architecture
• HTTP parser
• DNS parser
• IPv6 support
• Policy engine
• Export reports
• Unit testing
• Performance optimization

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Future Improvements

• Web dashboard
• REST API
• Threat detection
• Intrusion detection rules
• Traffic visualization

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Author

Sarbesh Mallick

Computer Science Graduate

GitHub: https://github.com/sarbeshmallick

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Disclaimer

This project is being continuously improved as part of my software engineering learning journey.