# SELinux on Red Hat Enterprise Linux and Rocky Linux
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By default, Security Enhanced Linux (SELinux) is `enabled` and set to `enforcing` mode for WorkSpaces Applications image builders and streaming instances powered by Red Hat Enterprise Linux and Rocky Linux. In `enforcing` mode, permission denials are enforced. SELinux is a collection of kernel features and utilities to provide a strong, flexible, mandatory access control (MAC) architecture to the major subsystems of the kernel.

SELinux provides an enhanced mechanism to enforce the separation of information based on confidentiality and integrity requirements. This separation of information reduces threats of tampering and bypassing of application security mechanisms. It also confines damage that can be caused by malicious or flawed applications.

SELinux includes a set of sample security policy configuration files that's designed to meet everyday security goals. For more information about SELinux features and functionality, see [What is SELinux](https://www.redhat.com/en/topics/linux/what-is-selinux)?