About lsoff
lsoff is a command-line and text-interface utility for listing TCP and UDP ports that are listening for network connections. It is available for Windows, Linux, and macOS. A listening port indicates that a local service is waiting for a connection, so a port-focused view can help users see which network services are active on a computer. The tool is intended for troubleshooting or inspecting local network activity from a terminal. Its lsof-like interface is focused on listening ports rather than general network traffic capture. The supplied information does not specify whether it identifies owning processes, shows remote connections, or requires elevated permissions. Users should interpret an open port in context; its presence alone does not indicate a problem. lsoff's stated function is listing listening TCP and UDP ports across platforms.
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