NIST 800-53 AC-3

Access Enforcement

Return to master list of NIST 800-53 controls.


Automated Inspection items for NIST SP 800-53 AC-3 assessment.

Automated Inspection items are efficient enough that they can usually be part of a CA-7 Continuous Monitoring program on a daily (or in some cases hourly) basis, simultaneously meeting the requirements of RA-5 Vulnerability Scanning. While NIST 800-53 allows Continuous Monitoring results to be used for CA-2 Security Assessments and CA-4 Security Certification, a separate run using the same automated Inspection items in combination with more laborious items for CA-2 and CA-4 adds no significant burden.

Depending on FIPS 199 impact level and whether the Industrial Control Systems (ICS/SCADA) subset of 800-53 is chosen,  LJK/Security™ starter templates provide automated Inspection items as follows:

NIST SP 800-53 R2 AC-3
Description  Automated Tests
Each Username is prohibited access on secondary days.
(UAF,HOURSSEC,ABSOLUTHI)
(UAF,HOURSSEC,ABSOLUTLO)
Each Username is restricted to a period between 7 and 13 hours of access on primary days.
(UAF,HOURSPRI,ABSOLUTHI)
(UAF,HOURSPRI,ABSOLUTLO)
The location of SYSUAF is consistent across a cluster.
(VMS,SYSUAF,LOCATION)
NIST SP 800-53 R2 AC-3(1)
Description  Automated Tests
Special files are accessible only to System and Owner.
(DISK,CHECKPROT,ABSOLUTHI)
Special files are owned by SYSTEM.
(DISK,CHECKPROT,OWNER)
Special files have no UIC identifiers in ACLs.
(DISK,CHECKPROT,ACLNOUIC)
Special files have no generic identifiers in ACLs.
(DISK,CHECKPROT,ACLNOGEN)
Special files have no system identifiers in ACLs.
(DISK,CHECKPROT,ACLNOSYS)
Successful access to special files is audited.
(DISK,CHECKPROT,AUSREQUIRE)
System parameter NISCS_CONV_BOOT is disabled.
(VMS,CONVBOOT,PROHIBITED)
(VMS,CONVBOOT,REQUIRED)
NIST SP 800-53 R2 AC-3(ICS-1)
Description  Automated Tests
Sufficient ICS functions require dual authorization.
(VMS,SECONDARY,PERCENTHI)
(VMS,SECONDARY,PERCENTLO)

Manual Inspection items for NIST SP 800-53 AC-3 assessment.

Manual Inspection items are useful mainly for CA-2 Security Assessments and CA-4 Security Certification. For most environments they are too laborious to include in CA-7 Continuous Monitoring.

Depending on FIPS 199 impact level and whether the Industrial Control Systems (ICS/SCADA) subset of 800-53 is chosen,  LJK/Security™ starter templates provide Manual Inspection items in the following groups:

Determination Statement Number Group Names
NIST SP 800-53 R2 AC-3
ACCOUNTS
NIST SP 800-53 R2 AC-3(1)
ACCOUNTS
POLICY
NIST SP 800-53 R2 AC-3(ICS-1)
ACCOUNTS
POLICY

Manual Invasive Testing items for NIST SP 800-53 AC-3 assessment.

Manual Invasive Testing items are useful mainly for CA-2 Security Assessments and CA-4 Security Certification. For most environments they are too laborious to include in CA-7 Continuous Monitoring. The level of effort required and the degree of invasiveness are so high (in most cases making up for lack of Common Criteria evaluation) that arrangement as a Common Control is almost always a requirement for execution.

Depending on FIPS 199 impact level and whether the Industrial Control Systems (ICS/SCADA) subset of 800-53 is chosen,  LJK/Security™ starter templates provide Manual Invasive Testing items in the following groups:

Determination Statement Number Group Names
NIST SP 800-53 R2 AC-3
TEST_VMS_ACCESS
NIST SP 800-53 R2 AC-3(1)
TEST_VMS_PRIV

Descriptions above apply to  LJK/Security™ Version 3.0.

The notation NIST SP 800-53 above refers in particular to NIST Special Publication 800-53 Revision 2.

Those NIST Special Publications specify security standards in support of FISMA for US Federal Government civil activities.

Return to master list of NIST 800-53 controls.


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