What is SELinux type?
The SELinux type identifier is a simple variable-length string that is defined in the policy and then associated to a security context. It is also used in the majority of SELinux language statements and rules used to build a policy that will, when loaded into the security server, enforce policy via the object managers.
How do I set SELinux type?
To make SELinux context changes that survive a file system relabel:
- Run the /usr/sbin/semanage fcontext -a options file-name | directory-name command, remembering to use the full path to the file or directory.
- Run the /sbin/restorecon -v file-name | directory-name command to apply the context changes.
What are the names of the labels in SELinux?
Labels are in the format user:role:type:level (level is optional). User, role, and level are used in more advanced implementations of SELinux, like with MLS.
What is SELinux and what does it do for Linux?
What is SELinux? Security-Enhanced Linux (SELinux) is a security architecture for Linux® systems that allows administrators to have more control over who can access the system. It was originally developed by the United States National Security Agency (NSA) as a series of patches to the Linux kernel using Linux Security Modules (LSM).
What do you need to know about SELinux enforcement?
Type enforcement is the part of an SELinux policy that defines whether a process running with a certain type can access a file labeled with a certain type. If SELinux has been disabled in your environment, you can enable SElinux by editing /etc/selinux/config and setting SELINUX=permissive.
How can I change the status of SELinux?
To change the SELinux status at runtime you can use the setenforce command. Its syntax is really simple: you specify the status you want to put SELinux in, choosing between Enforcing or Permissive or providing a boolean value referred to the enforcing status. What you cannot do with this command is to disable SELinux completely.