Rsyslog is an open-source software utility that provides a reliable way to collect, process, and store log messages from various sources. It is commonly used in Linux systems to manage logs generated by applications, services, and the operating system itself. Rsyslog supports various protocols, including TCP and UDP, allowing it to receive logs from remote systems. One of the key features of Rsyslog is its ability to filter and route log messages based on specific criteria. This enables users to organize logs efficiently, directing them to different files or databases for easier analysis. Additionally, Rsyslog can integrate with other tools, enhancing its functionality in log management and monitoring.