MA-4(1)

Requirement
1. Log [Assignment: organization-defined audit events] for nonlocal maintenance and diagnostic sessions; and
2. Review the audit records of the maintenance and diagnostic sessions to detect anomalous behavior.

Discussion

Audit logging for nonlocal maintenance is enforced by AU-2. Audit events are defined in AU-2a.

NIST 800-53A Assessment Guidance

Examine

[SELECT FROM: Maintenance policy; procedures addressing nonlocal system maintenance; list of audit events; system configuration settings and associated documentation; maintenance records; diagnostic records; audit records; reviews of maintenance and diagnostic session records; system security plan; other relevant documents or records].

Interview

[SELECT FROM: Organizational personnel with system maintenance responsibilities; organizational personnel with information security responsibilities; organizational personnel with audit and review responsibilities; system/network administrators].

Test

[SELECT FROM: Organizational processes for audit and review of nonlocal maintenance; mechanisms supporting and/or implementing audit and review of nonlocal maintenance].

ID	Assessment Objectives
MA-04(01)(a)[01]	<MA-04(01)_ODP[01] audit events> are logged for nonlocal maintenance sessions;
MA-04(01)(a)[02]	<MA-04(01)_ODP[02] audit events> are logged for nonlocal diagnostic sessions;
MA-04(01)(b)[01]	the audit records of the maintenance sessions are reviewed to detect anomalous behavior;
MA-04(01)(b)[02]	the audit records of the diagnostic sessions are reviewed to detect anomalous behavior.

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