Syslog-ng is an open-source implementation of the syslog protocol, designed to collect, process, and store log messages from various sources. It enhances the traditional syslog functionality by supporting a wide range of input sources, including files, network protocols, and databases, making it versatile for different environments. One of the key features of Syslog-ng is its ability to filter and route log messages based on specific criteria. This allows organizations to manage their logs more effectively, ensuring that critical information is prioritized and stored securely. Additionally, it supports various output formats, enabling integration with other logging and monitoring tools.