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IT pro’s guide to working smarter with Linux

Originally Published:
Apr 2017

Linux has been the backbone of businesses for decades, as the enterprise has come to rely on it to power web servers, database systems, development machines, and employee workstations. This ebook offers practical tips and advice to help your organization get the most out of Linux.

From the ebook:

If you’re using a Linux distribution that takes advantage of SELinux, such as CentOS, Red Hat, Fedora, or SUSE, you know it can be a blessing and a curse. While SELinux is an incredibly powerful tool that goes a long way toward keeping your Linux-powered machines secure, it can be a nightmare to configure. Fortunately, a tool called SELinux Alert Browser can ease those troubles.

With SELinux Alert Browser, you can get quick solutions when SELinux is causing you issues. In fact, you’d be hard-pressed to find an easier route to solving your SELinux headaches. Let’s see how to take advantage of this powerful application.

Opening the tool
Note: The SELinux Alert Browser will be installed by default on any distribution that uses SELinux and has a GUI interface.

SELinux Alert Browser will pop up in your notification window when there’s an issue, and then you can open the tool from there. If you haven’t received an alert or your alerts are a bit aged, you may not see the warning; if that’s the case, there’s an easy way to open SELinux Alert Browser:

  1. Open a terminal window
  2. Issue the command sealert.
The tool will open, and you’re ready to start browsing alerts.

Using the SELinux Alert Browser
The best thing about the SELinux Alert Browser, and the feature you will use most often, is the Troubleshoot button. When you click that button, you will get a possible solution for the issue that was reported in your alert from SELinux.

The Troubleshoot button will reveal possible actions you can take to resolve your issue. In some cases sealert will instruct you on how to have SELinux stop auditing the issue; in other cases it will show how to generate a new policy module that allows an object (such as xenconsoled) access to a resource.

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