III - Administrative Sensitive
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000516-DNS-000078
<GroupDescription></GroupDescription>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.
<VulnDiscussion>The best way for a zone administrator to minimize the impact of a key compromise is by limiting the validity period of RRSIGs...Rule Medium Severity -
SRG-APP-000516-DNS-000084
<GroupDescription></GroupDescription>Group -
NSEC3 must be used for all internal DNS zones.
<VulnDiscussion>NSEC records list the resource record types for the name, as well as the name of the next resource record. This information r...Rule Medium Severity -
SRG-APP-000516-DNS-000085
<GroupDescription></GroupDescription>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.
<VulnDiscussion>Poorly constructed NS records pose a security risk because they create conditions under which an adversary might be able to p...Rule High Severity -
SRG-APP-000516-DNS-000087
<GroupDescription></GroupDescription>Group -
All authoritative name servers for a zone must be located on different network segments.
<VulnDiscussion>Most enterprises have an authoritative primary server and a host of authoritative secondary name servers. It is essential tha...Rule Medium Severity -
SRG-APP-000516-DNS-000088
<GroupDescription></GroupDescription>Group -
All authoritative name servers for a zone must have the same version of zone information.
<VulnDiscussion>The only protection approach for content control of a DNS zone file is the use of a zone file integrity checker. The effectiv...Rule Medium Severity -
SRG-APP-000516-DNS-000089
<GroupDescription></GroupDescription>Group -
The Windows DNS Server must be configured to enable DNSSEC Resource Records (RRs).
<VulnDiscussion>The specification for a digital signature mechanism in the context of the DNS infrastructure is in the Internet Engineering T...Rule High Severity -
SRG-APP-000516-DNS-000090
<GroupDescription></GroupDescription>Group -
The digital signature algorithm used for DNSSEC-enabled zones must be FIPS-compatible.
<VulnDiscussion>The choice of digital signature algorithm will be based on recommended algorithms in well-known standards. NIST's Digital Sig...Rule Medium Severity -
SRG-APP-000516-DNS-000091
<GroupDescription></GroupDescription>Group -
For zones split between the external and internal sides of a network, the resource records (RRs) for the external hosts must be separate from the RRs for the internal hosts.
<VulnDiscussion>Authoritative name servers for an enterprise may be configured to receive requests from both external and internal clients. ...Rule Medium Severity -
SRG-APP-000516-DNS-000092
<GroupDescription></GroupDescription>Group -
In a split DNS configuration between the external and internal networks, the external name server must be configured to not be reachable from inside resolvers.
<VulnDiscussion>Instead of having the same set of authoritative name servers serve different types of clients, an enterprise could have two d...Rule Medium Severity -
SRG-APP-000516-DNS-000095
<GroupDescription></GroupDescription>Group -
Primary authoritative name servers must be configured to only receive zone transfer requests from specified secondary name servers.
<VulnDiscussion>Authoritative name servers (especially primary name servers) should be configured with an allow-transfer access control subst...Rule Medium Severity
Node 2
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