https://linux.meerstory.com/categories/ubuntu-networking/Recent content in Ubuntu Networking on MeerStoryHugoen-usFri, 09 Oct 2026 01:57:42 +0900https://linux.meerstory.com/ubuntu/20261009_015658_18/Fri, 09 Oct 2026 01:57:42 +0900https://linux.meerstory.com/ubuntu/20261009_015658_18/<h2 id="overview">Overview</h2> <p>Diagnosing socket states and tracing open communication channels sits at the core of effective Linux system troubleshooting. While legacy toolsets like <code>netstat</code> were once ubiquitous, the modern Linux ecosystem relies on the significantly faster and more capable <code>ss</code> utility. In this hands-on walkthrough, we dive into leveraging <code>ss</code> to inspect active connections, monitor listening services, identify bind ports, and correlate network sockets with their controlling process IDs.</p> <h2 id="1-preparing-the-environment-and-inspecting-global-socket-statistics">1. Preparing the Environment and Inspecting Global Socket Statistics</h2> <p>The <code>ss</code> command-line utility ships out of the box with the <code>iproute2</code> package on modern Ubuntu distributions. Begin by updating the local package index and ensuring <code>iproute2</code> is fully installed and up to date.</p>