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Difficulty: MediumChange Management and Security Impacts

An enterprise security operations team needs to update core firewall access control lists (ACLs) to accommodate a new external application service. Place the standard security change management workflow steps in the correct chronological order from first to last.

  1. 1Perform a security impact analysis, define the change scope, and draft a documented backout plan.
  2. 2Submit the change request to the Change Advisory Board (CAB) for formal review and authorization.
  3. 3Validate the firewall rule modifications and backout procedures within a dedicated staging environment.
  4. 4Implement the firewall rule modifications on production systems during the authorized maintenance window.
  5. 5Conduct a post-implementation review (PIR) and audit logs to verify security posture before closing the ticket.

Answer

The correct sequence for the change control workflow is: 1) Perform security impact analysis and document backout plan, 2) Submit change request to CAB for authorization, 3) Validate changes in a staging environment, 4) Implement changes in production during authorized window, and 5) Conduct post-implementation review.
A structured change management workflow ensures security oversight by requiring initial risk assessment and backout planning, CAB authorization, pre-deployment staging validation, scheduled production execution, and final post-implementation verification.

Step-by-Step Solution

1
Analyze security impact and draft change documentation.
A clear scope, security assessment, and rollback strategy are documented.
Change management policy requires thorough risk assessment before seeking organizational approval.
2
Submit proposal for CAB review.
The Change Advisory Board evaluates business risk and approves implementation.
Formal authorization ensures change alignment with organizational risk tolerance and operational schedules.
3
Execute testing in staging environment.
The proposed rule set and backout steps are validated as safe and functional.
Pre-production testing prevents unexpected outages or unintended security exposure on live networks.
4
Deploy modifications into production.
Firewall ACL updates are applied during the scheduled change window.
Execution within maintenance windows minimizes business disruption during system updates.
5
Perform post-implementation review.
Production security baselines are audited and the change ticket is closed.
Post-implementation audit confirms successful deployment and verifies no drift from baseline security requirements.

Key Concept

Formal Change Management Workflow and Security Impact Lifecycle
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Topics

Change Management and Security Impacts

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