An administrator in your organization is concerned about performance issues and believes that Security-Enhanced Linux (SELinux) may be impacting the system's performance negatively. The admin has decided to completely disable SELinux to test this theory. After changing the SELinux mode to 'disabled' and rebooting the system, what long-term security implications should the administrator be made aware of?
SELinux will automatically re-enable after an update, minimizing long-term security risks.
The system will rely solely on traditional Unix/Linux permissions, leading to potential security vulnerabilities.
The system performance will improve without any negative security implications since file permissions and ACLs continue to protect the system.
SELinux can be re-enabled without rebooting, thus no long-term security implications exist.
Disabling SELinux entirely can expose the system to vulnerabilities and security threats that SELinux would ordinarily mitigate. SELinux provides a layer of security by enforcing access control policies that are not managed by traditional Unix/Linux permissions. When disabled, these policies do not apply, leaving the system susceptible to unauthorized access and potential exploits. The administrator should be aware of the increased risk and consider alternative methods for diagnosing performance issues, such as permissive mode, without compromising on security.
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What is SELinux and why is it important?
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What does it mean for the system to rely solely on traditional Unix/Linux permissions?
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What alternatives exist to diagnose performance issues without disabling SELinux?