package

github.com/bad-antics/nullsec-sniff

main / published Jan 27, 2026 / repository

NullSec Sniff - Network packet capture and analysis tool

NullSec sniff

Network packet sniffer with protocol analysis

Language Platform License

Overview

Part of the NullSec security toolkit. Written in Crystal.

Features

  • Packet capture and analysis
  • Protocol parsing (TCP/UDP/ICMP/ARP)
  • Service identification
  • Interface statistics
  • Filtering by protocol, port, host

Installation

crystal build --release src/sniff.cr -o sniff
sudo cp sniff /usr/local/bin/

Usage

sniff --help                # Show help
sniff -i eth0               # Capture on interface
sniff -i eth0 -p tcp        # TCP only
sniff -l                    # List interfaces

Author

bad-antics - NullSec Project

License

MIT License

API