I - Mission Critical Public
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000516-DNS-000078
Group -
The validity period for the Resource Record Signatures (RRSIGs) covering a zone's DNSKEY RRSet must be no less than two days and no more than one week.
The best way for a zone administrator to minimize the impact of a key compromise is by limiting the validity period of RRSIGs in the zone and the parent zone. This strategy limits the time during w...Rule Medium Severity -
SRG-APP-000516-DNS-000084
Group -
NSEC3 must be used for all internal DNS zones.
NSEC records list the resource record types for the name, as well as the name of the next resource record. This information reveals that the resource record type for the name queried, or the resour...Rule Medium Severity -
SRG-APP-000516-DNS-000085
Group -
The Windows DNS Server's zone files must have NS records that point to active name servers authoritative for the domain specified in that record.
Poorly constructed NS records pose a security risk because they create conditions under which an adversary might be able to provide the missing authoritative name services that are improperly speci...Rule High Severity -
SRG-APP-000516-DNS-000087
Group -
All authoritative name servers for a zone must be located on different network segments.
Most enterprises have an authoritative primary server and a host of authoritative secondary name servers. It is essential that these authoritative name servers for an enterprise be located on diffe...Rule Medium Severity -
SRG-APP-000516-DNS-000088
Group -
All authoritative name servers for a zone must have the same version of zone information.
The only protection approach for content control of a DNS zone file is the use of a zone file integrity checker. The effectiveness of integrity checking using a zone file integrity checker depends ...Rule Medium Severity
Node 2
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