II - Mission Support Classified
Rules and Groups employed by this XCCDF Profile
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SRG-APP-000516-DNS-000078
Group -
A BIND 9.x server validity period for the RRSIGs covering a zones 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 in the parent zone. This strategy limits the time durin...Rule Medium Severity -
SRG-APP-000516-DNS-000084
Group -
A BIND 9.x server NSEC3 must be used for all internal DNS zones.
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...Rule Medium Severity -
SRG-APP-000516-DNS-000085
Group -
Every NS record in a zone file on a BIND 9.x server must point to an active name server and that name server must be 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 Medium Severity -
SRG-APP-000516-DNS-000087
Group -
On a BIND 9.x server 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 -
On a BIND 9.x server all authoritative name servers for a zone must have the same version of zone information.
It is important to maintain the integrity of a zone file. The serial number of the SOA record is used to indicate to secondary name server that a change to the zone has occurred and a zone transfer...Rule Medium Severity
Node 2
The content of the drawer really is up to you. It could have form fields, definition lists, text lists, labels, charts, progress bars, etc. Spacing recommendation is 24px margins. You can put tabs in here, and can also make the drawer scrollable.