STIGQter: STIG Summary: Infoblox 8.x DNS Security Technical Implementation Guide Version: 1 Release: 3 Benchmark Date: 01 Jul 2026:

The Infoblox DNS service member implementation must follow procedures to promote a secondary DNS service member to the role of primary DNS service member in the event the current primary DNS service member permanently loses functionality.

DISA Rule

SV-233896r1156951_rule

Vulnerability Number

V-233896

Group Title

SRG-APP-000451-DNS-000069

Rule Version

IDNS-8X-400038

Severity

CAT II

CCI(s)

• CCI-000366 - Implement the security configuration settings.
• CCI-002775 - Implement organization-defined fail-safe procedures when organization-defined failure conditions occur.

Weight

10

Fix Recommendation

1. Refer to the Infoblox NIOS Administrator Guide, Chapters "Deploying a Grid", and "Configuring DNS Zones", section "Assigning Zone Authority to DNS service members", if necessary.
2. Configure a Grid Manager Candidate or define a local policy to promote a secondary DNS service member.

Check Contents

Validation of this configuration item requires review of the network architecture and security configuration in addition to DNS service member configuration to validate external DNS service members are not accessible from the internal network when a split DNS configuration is implemented.

1. Navigate to Data Management >> DNS >> Members tab.
2. Review the network configuration and access control of each Infoblox member that has the DNS service running.
3. Select each grid member and click "Edit".
4. Review the "Queries" tab to verify that both queries and recursion options are enabled and allowed only from the respective client networks.

If a split DNS configuration is not used, this is not a finding.

If there is no access control configured or access control does not restrict queries and recursion to the respective client network, this is a finding.

Vulnerability Number

V-233896

Documentable

False

Rule Version

IDNS-8X-400038

Severity Override Guidance

Validation of this configuration item requires review of the network architecture and security configuration in addition to DNS service member configuration to validate external DNS service members are not accessible from the internal network when a split DNS configuration is implemented.

1. Navigate to Data Management >> DNS >> Members tab.
2. Review the network configuration and access control of each Infoblox member that has the DNS service running.
3. Select each grid member and click "Edit".
4. Review the "Queries" tab to verify that both queries and recursion options are enabled and allowed only from the respective client networks.

If a split DNS configuration is not used, this is not a finding.

If there is no access control configured or access control does not restrict queries and recursion to the respective client network, this is a finding.

Check Content Reference

M

Target Key

5251