Vulnerability V-259372

Note: This check is not applicable for Windows DNS Servers that host only Active Directory-integrated zones or for Windows DNS Servers on a classified network. In Windows, the NSEC3 salt values are automatically changed when the zone is re-signed. To validate: Log on to the DNS server using the Domain Admin or Enterprise Admin account or Local Administrator account. Press the Windows key + R and 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 windowpane. Determine the RRSIG NSEC3PARAM's Inception (in the Data column). Compare the Inception to the RRSIG DNSKEY Inception. The date and time should be the same. If the NSEC3PARAM's Inception date and time is different than the DNSKEY Inception date and time, 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 or Local Administrator account. Press the Windows key + R and 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" using either approved saved parameters or approved custom parameters. Revalidate the NSEC3PARAM Inception date and time against the DNSKEY date and time.