From Microsoft Windows 2012 Server Domain Name System Security Technical Implementation Guide
Part of SRG-APP-000514-DNS-000075
Associated with: CCI-002450
Use of weak or untested encryption algorithms undermines the purposes of utilizing encryption to protect data. The application must implement cryptographic modules adhering to the higher standards approved by the federal government since this provides assurance they have been tested and validated.
Note: This check is Not applicable for Windows 2012 DNS Servers that only host Active Directory integrated zones or for Windows 2012 DNS servers on a Classified network. Log on to the DNS server using the Domain Admin or Enterprise Admin account. Press Windows Key + R, execute dnsmgmt.msc. On the opened DNS Manager snap-in from the left pane, expand the server name for the DNS server, and then expand Forward Lookup Zones. From the expanded list, click to select the zone. Review the zone's RRs in the right window pane. For zones signed with DNSSEC, review the DNSKEY encryption in the Data column. Example: [DNSKEY][RsaSha1][31021] Confirm the encryption algorithm specified in the DNSKEY's Data is at RsaSha1, at a minimum. If the specified encryption algorithm is not RsaSha1 or stronger, this is a finding.
Sign or re-sign, the hosted zone(s) on the DNS server being validated. Log on to the DNS server using the Domain Admin or Enterprise Admin account. Press Windows Key + R, execute dnsmgmt.msc. On the opened DNS Manager snap-in from the left pane, expand the server name for the DNS server, and then expand Forward Lookup Zones. From the expanded list, right-click to select the zone (repeat for each hosted zone), point to DNSSEC, and then click “Sign the Zone”, either using approved saved parameters or approved custom parameters.
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