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Working with SELinux Booleans and Ports

Beyond managing the context for each file and process on a server, SELinux also has expected configurations and port settings for most services we use. In this lab, we'll attempt to configure MariaDB on a non-standard port, then use SELinux tools to update our policy without rewriting it.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 15m
Last updated
Clock icon Aug 10, 2025

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Table of Contents

  1. Challenge

    Update MariaDB Configuration

    Update the MariaDB configuration at /etc/my.cnf.d/server.cnf to use port 3333.

  2. Challenge

    Add Port to SELinux

    Use semanage to add a MariaDB port.

  3. Challenge

    Check and Potentially Change SELinux Boolean

    View the mysql_connect_any boolean and then turn it on, if needed.

Pluralsight Skills - Labs - Pluralsight
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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

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Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

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Follow along with the author’s guided walkthrough and build something new in your provided environment!

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