Infoblox DNS servers must be configured to protect the authenticity of communications sessions for queries.

Severity	Group ID	Group Title	Version	Rule ID	Date	STIG Version
medium	V-214176	SRG-APP-000219-DNS-000030	IDNS-7X-000290	SV-214176r612370_rule	2020-12-10	2

Description
The underlying feature in the major threat associated with DNS query/response (i.e., forged response or response failure) is the integrity of DNS data returned in the response. An integral part of integrity verification is to ensure that valid data has originated from the right source. DNSSEC is required for securing the DNS query/response transaction by providing data origin authentication and data integrity verification through signature verification and the chain of trust.

Description

The underlying feature in the major threat associated with DNS query/response (i.e., forged response or response failure) is the integrity of DNS data returned in the response. An integral part of integrity verification is to ensure that valid data has originated from the right source. DNSSEC is required for securing the DNS query/response transaction by providing data origin authentication and data integrity verification through signature verification and the chain of trust.

ℹ️ Check
Note: For Infoblox DNS systems on a Classified network, this requirement is Not Applicable. Validate that DNSSEC validation is enabled by navigating to Data Management >> DNS >> Grid DNS properties, toggle Advanced Mode click on "DNSSEC" tab. When complete, click "Cancel" to exit the "Properties" screen. Note: DNSSEC validation is only applicable on a grid member where recursion is active. If both "Enable DNSSEC" and "Enable DNSSEC validation" are not enabled, this is a finding.

ℹ️ Check

Note: For Infoblox DNS systems on a Classified network, this requirement is Not Applicable. Validate that DNSSEC validation is enabled by navigating to Data Management >> DNS >> Grid DNS properties, toggle Advanced Mode click on "DNSSEC" tab. When complete, click "Cancel" to exit the "Properties" screen. Note: DNSSEC validation is only applicable on a grid member where recursion is active. If both "Enable DNSSEC" and "Enable DNSSEC validation" are not enabled, this is a finding.

✔️ Fix
DNSSEC validation is enabled by navigating to Data Management >> DNS >> Grid DNS properties, toggle Advanced Mode click on "DNSSEC" tab. Enable both "Enable DNSSEC" and "Enable DNSSEC validation". When complete, click "Save & Close" to save the changes and exit the "Properties" screen. Perform a service restart if necessary.