Certified Ethical Hacking/ NetSniff-Ng The Packet Sniffing Best Tool /

*Netsniff-ng* is a powerful, free, and open-source networking tool designed primarily for Linux systems. It is a packet-capture and network-analysis tool, similar to tools like Wireshark and tcpdump, but with a focus on performance and efficiency. Netsniff-ng operates at the kernel level, making it highly efficient for handling high-throughput network traffic without significant loss of packets.

Key Features:
1. **Packet Capture**: Captures packets at the kernel level for real-time analysis and debugging.
2. **Zero-Copy Sniffer**: Uses Linux's zero-copy techniques for minimal CPU usage during capture and analysis.
3. **High Performance**: Ideal for high-speed networks due to its optimized architecture.
4. **Offline Analysis**: Allows users to save captured traffic in PCAP format for later analysis.
5. **Multi-tool Suite**: Includes additional tools for traffic replay, packet generation, and monitoring, such as `trafgen`, `mausezahn`, and `ifpps`.
6. **Scriptable**: Supports scripting for automation and customized analysis.
7. **IPv4 and IPv6 Support**: Fully compatible with both IPv4 and IPv6 protocols.

Use Cases:
Network troubleshooting and diagnostics.
Security analysis, such as detecting intrusions or anomalies.
Performance monitoring of network traffic.
Development and testing of network protocols.

The tool is often preferred by network engineers, administrators, and cybersecurity professionals for its efficiency and versatility in both live and offline traffic analysis.