How to Check for Listening Ports in Linux

Posted by linuxize on Aug 15, 2019 11:45 PM EDT
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When troubleshooting network connectivity or application-specific issues one of the first things to check should be what ports are actually in use on your system and which application is listening on a specific port.

This article explains how to find out which services are listening on which ports using the netstat, ss and lsof commands. The instructions are applicable for all Linux and Unix-based operating systems like macOS.

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