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XCCDF
BIND 9.x Security Technical Implementation Guide
SRG-APP-000516-DNS-000084
SRG-APP-000516-DNS-000084
An XCCDF Group - A logical subset of the XCCDF Benchmark
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SRG-APP-000516-DNS-000084
1 Rule
<GroupDescription></GroupDescription>
A BIND 9.x server NSEC3 must be used for all internal DNS zones.
Medium Severity
<VulnDiscussion>To ensure that RRs associated with a query are really missing in a zone file and have not been removed in transit, the DNSSEC mechanism provides a means for authenticating the nonexistence of an RR. It generates a special RR called an NSEC (or NSEC3) RR that lists the RRTypes associated with an owner name as well as the next name in the zone file. It sends this special RR, along with its signatures, to the resolving name server. By verifying the signature, a DNSSEC-aware resolving name server can determine which authoritative owner name exists in a zone and which authoritative RRTypes exist at those owner names.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>