III - Administrative Classified
Rules and Groups employed by this XCCDF Profile
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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 DNS zone file is the use of a zone file integrity checker. The effectiven...Rule Medium Severity -
SRG-APP-000516-DNS-000089
<GroupDescription></GroupDescription>Group -
An authoritative name server must be configured to enable DNSSEC resource records.
<VulnDiscussion>The specification for a digital signature mechanism in the context of the DNS infrastructure is in the Internet Engineering T...Rule Medium 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 High 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, where separate name servers are used 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-000093
<GroupDescription></GroupDescription>Group -
In a split DNS configuration, where separate name servers are used between the external and internal networks, the internal name server must be configured to not be reachable from outside 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 sub-s...Rule Medium Severity -
SRG-APP-000516-DNS-000099
<GroupDescription></GroupDescription>Group -
The Infoblox system must use a security policy that limits the propagation of access rights.
<VulnDiscussion>Discretionary Access Control (DAC) is based on the premise that individual users are "owners" of objects and therefore have d...Rule Medium Severity -
SRG-APP-000516-DNS-000101
<GroupDescription></GroupDescription>Group -
The DNS implementation must implement internal/external role separation.
<VulnDiscussion>DNS servers with an internal role only process name/address resolution requests from within the organization (i.e., internal ...Rule Medium Severity -
SRG-APP-000516-DNS-000102
<GroupDescription></GroupDescription>Group -
The Infoblox DNS server must use current and valid root name servers.
<VulnDiscussion>All caching name servers must be authoritative for the root zone because, without this starting point, they would have no kno...Rule Medium Severity
Node 2
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