An administrator implements SELinux on a production web server. After implementing this, the web server no longer serves up files from users’ home directories. To rectify this, the administrator creates a new policy as the root user. This is an example of which of the following? (Select TWO).
A. Enforcing SELinux in the OS kernel is role-based access control B. Enforcing SELinux in the OS kernel is rule-based access control C. The policy added by the root user is mandatory access control D. Enforcing SELinux in the OS kernel is mandatory access control E. The policy added by the root user is role-based access control F. The policy added by the root user is rule-based access control
Answer: D,F
Explanation: Enforcing SELinux in the OS kernel is mandatory access control. SELinux is Security Enhanced Linux which is a locked down version of the OS kernel.
Mandatory Access Control (MAC) is a relatively inflexible method for how information access is permitted. In a MAC environment, all access capabilities are predefined. Users can’t share information unless their rights to share it are established by administrators. Consequently, administrators must make any changes that need to be made to such rights. This process enforces a rigid model of security. However, it is also considered the most secure security model.
The policy added by the root user is rule-based access control. The administrator has defined a policy that states that users folders should be served by the web server. Rule-Based Access Control (RBAC) uses the settings in preconfigured security policies to make all decisions.