Ensuring Backup Plan Rule for EFS File Systems
This rule emphasizes the need to protect EFS file systems with a backup plan.
| Rule | EFS file systems should be protected by backup plan |
| Framework | NIST 800-171 Revision 2 |
| Severity | ✔ High |
Rule Description
According to NIST 800-171 Revision 2, it is required to implement a backup plan to protect EFS (Encrypting File System) file systems. This is important for maintaining data integrity, availability, and recoverability in the event of data loss or system failure. A backup plan ensures that critical data stored in EFS file systems can be restored to a previous state, minimizing the impact of potential disruptions or disasters.
Troubleshooting Steps (if applicable)
If you encounter any issues related to implementing or managing the backup plan for EFS file systems, you can follow these troubleshooting steps:
- 1.
Check EFS Configuration: Ensure that EFS is properly configured and enabled on the relevant file systems. Verify that encryption and decryption processes are working correctly.
- 2.
Review Backup Policy: Examine the existing backup policy to confirm that it aligns with the requirements outlined in NIST 800-171 Revision 2. Ensure that all relevant EFS file systems are included in the backup scope.
- 3.
Check Backup Schedule: Verify that regular backups are scheduled based on the criticality of data stored in EFS file systems. Ensure that backups are performed at an appropriate frequency to minimize data loss.
- 4.
Confirm Backup Storage: Ensure that backup data is stored securely, preferably in an off-site location or a cloud-based storage service. Confirm the accessibility and integrity of backup data.
- 5.
Validate Backup Restorability: Periodically test the restoration process of EFS file systems from the backups. Verify that the restored data is accurate, complete, and accessible.
- 6.
Monitor Backup Job Status: Implement a monitoring mechanism to keep track of backup job status. Receive notifications or alerts in case of any failed or incomplete backup processes.
- 7.
Troubleshoot Backup Failures: If backup failures occur, investigate and resolve the underlying issues promptly. This may involve addressing storage capacity, connectivity, or permissions problems.
Necessary Codes (if applicable)
There are no specific codes associated with this rule. However, it is recommended to use scripting or automation tools to streamline backup processes, automate backup scheduling, and validate the restorability of EFS file systems.
Step-by-step Guide for Remediation
Follow the steps below to ensure compliance with the NIST 800-171 Revision 2 requirement of implementing a backup plan for EFS file systems:
- 1.
Identify Critical EFS File Systems: Identify the EFS file systems that store critical data and are subject to backup and recovery requirements. This may include file systems hosting sensitive or important information.
- 2.
Define Backup Policy: Develop a backup policy that outlines the frequency, retention period, and scope of backups. Consider factors such as recovery point objectives (RPO) and recovery time objectives (RTO) while defining the policy.
- 3.
Select Backup Method: Determine the appropriate backup method based on your organization's requirements and available resources. Options include using cloud-based backup services, external storage devices, or network-attached storage (NAS).
- 4.
Configure Backup Schedule: Implement a backup schedule that aligns with the criticality of EFS file systems. Consider the frequency of file changes and the importance of data updates while establishing the backup intervals.
- 5.
Test Backup and Restoration: Periodically test the backup process to ensure the reliability and integrity of backed-up data. Verify that the restoration process works correctly and that restored data remains accessible and intact.
- 6.
Secure Backup Storage: Ensure that the backup data is securely stored according to your organization's security policies. Implement encryption, access controls, and regular auditing to protect against unauthorized access or data breaches.
- 7.
Monitor Backup Job Status: Regularly monitor the status of backup jobs to identify any failures or anomalies. Implement alerts or notifications to promptly address any issues that may affect the backup process.
- 8.
Document Backup Plan: Document the backup plan, including all configuration details, schedules, and storage locations. This documentation should also include procedures for monitoring, testing, and restoring EFS file systems from backups.
By following these steps, you can establish and maintain a backup plan that complies with NIST 800-171 Revision 2 requirements, ensuring the protection and recoverability of EFS file systems.