AI/MLLive

PacketLens

Professional network packet analysis tool with real-time capture, protocol decoding, and advanced filtering

2024
PacketLens

Project Overview

PacketLens is a professional-grade network packet analyzer built with Java and JavaFX, offering real-time packet capture and deep protocol analysis. Leveraging Pcap4J library for low-level packet capture, it provides detailed protocol decoding for TCP/IP, UDP, HTTP, DNS, and more. The intuitive JavaFX interface displays packets in real-time with color-coded protocol identification, hexadecimal dumps, and powerful filtering capabilities similar to Wireshark.

Technologies Used

Java

Core application logic and packet processing

JavaFX

Modern UI framework for rich desktop interface

Pcap4J

Native packet capture library wrapper

Network Programming

TCP/IP stack and protocol analysis

Multithreading

Concurrent packet capture and UI updates

Maven

Build automation and dependency management

Key Features

Real-time packet capture on multiple network interfaces
Deep protocol analysis: Ethernet, IP, TCP, UDP, HTTP, DNS, ARP
Color-coded protocol identification in packet list
Hexadecimal and ASCII packet dump viewer
Advanced filtering with BPF (Berkeley Packet Filter) syntax
Packet statistics and protocol distribution charts
Export captured packets to PCAP format
Search and highlight specific packets or protocols

Development Process

1

UI Design

Designed JavaFX interface with packet list and detail panels

2

Capture Engine

Integrated Pcap4J for multi-interface packet capture

3

Protocol Decoders

Implemented parsers for common network protocols

4

Filtering System

Added BPF filter support and real-time filtering

5

Visualization

Created charts and statistics for network traffic

6

Performance Optimization

Optimized for high-speed packet processing

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