ncat

Ncat is a powerful command-line tool commonly used for network debugging and assessing network connectivity. It is part of the Nmap suite of network exploration tools. Ncat provides a secure and feature-rich way to send/receive data across networks, acting as both a server and a client. It supports various protocols like TCP, UDP, and SSL. Ncat allows port scanning, relaying connections, and file transfer, making it highly versatile for various networking tasks. Additionally, it supports a wide range of options for advanced configuration and customization. Ncat is open-source software and is available for multiple operating systems, including Windows, macOS, and Linux. Its simplicity, flexibility, and extensive capabilities make it a popular choice among network administrators and security professionals.