Security-Enhanced Linux (SELinux) is a Linux kernel security module that provides a mechanism for supporting access control security policies, including mandatory access controls (MAC). SELinux is a set of kernel modifications and user-space tools that have been added to various Linux distributions. [source]
CentOS7 comes with selinux installed by default however some basic images of CentOS7 do require a manual effort to install it.
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yum install policycoreutils policycoreutils-python selinux-policy selinux-policy-targeted libselinux-utils setroubleshoot-server setools setools-console mcstrans |
To start SELinux, you can run
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systemctl start selinux |
To enable SELinux on boot, you can run
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systemctl enable selinux |
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