Table of Contents Table of Contents Title and Copyright Information Preface Documentation License Conventions Documentation Accessibility Access to Oracle Support for Accessibility Diversity and Inclusion 1 About Administering SELinux in Oracle Linux SELinux Package Descriptions Using SELinux Utilities Setting SELinux Modes Getting More Information 2 Administering SELinux Policies Targeted Policy Multi-Level Security Policy Setting or Switching SELinux Policies Customizing SELinux Policies 3 Administering SELinux Security Context Displaying SELinux User Mapping Displaying SELinux Context Information Changing the Default File Type Restoring the Default File Type Relabeling a File System 4 Administering SELinux Users Understanding Confined SELinux Users Mapping Oracle Linux Users to SELinux Confined Users Setting the Default User Mapping Configuring the Behavior of Application Execution for Users 5 Extending SELinux Policies with Multi-Category Security MCS Requirements Enabling MCS for Users Applying MCS Categories to a User Applying MCS Categories to Files Enabling the mcstrans Service 6 Troubleshooting Access-Denial Messages