The Windows DNS Server must be configured to enable DNSSEC Resource Records (RRs).

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259350	WDNS-22-000019	SV-259350r961863_rule		High

Description
The specification for a digital signature mechanism in the context of the DNS infrastructure is in the Internet Engineering Task Force's (IETF's) DNSSEC standard. In DNSSEC, trust in the public key (for signature verification) of the source is established not by going to a third party or a chain of third parties (as in public key infrastructure [PKI] chaining), but by starting from a trusted zone (such as the root zone) and establishing the chain of trust down to the current source of response through successive verifications of signature of the public key of a child by its parent. The public key of the trusted zone is called the trust anchor. After authenticating the source, the next process DNSSEC calls for is to authenticate the response. DNSSEC mechanisms involve two main processes: sign and serve and verify signature. Before a DNSSEC-signed zone can be deployed, a name server must be configured to enable DNSSEC processing.

Description

The specification for a digital signature mechanism in the context of the DNS infrastructure is in the Internet Engineering Task Force's (IETF's) DNSSEC standard. In DNSSEC, trust in the public key (for signature verification) of the source is established not by going to a third party or a chain of third parties (as in public key infrastructure [PKI] chaining), but by starting from a trusted zone (such as the root zone) and establishing the chain of trust down to the current source of response through successive verifications of signature of the public key of a child by its parent. The public key of the trusted zone is called the trust anchor. After authenticating the source, the next process DNSSEC calls for is to authenticate the response. DNSSEC mechanisms involve two main processes: sign and serve and verify signature. Before a DNSSEC-signed zone can be deployed, a name server must be configured to enable DNSSEC processing.

STIG	Date
Microsoft Windows Server Domain Name System (DNS) Security Technical Implementation Guide	2024-06-14

Details

Check Text ( C-63089r945254_chk )
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. 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 each zone. Review the RRs for each zone and verify all of the DNSSEC record types are included for the zone. Note: The DS (Delegation Signer) record should also exist but the requirement for it is validated under WDNS-22-000054. RRSIG (Resource Read Signature) DNSKEY (Public Key) NSEC3 (Next Secure 3) If the zone does not show all the DNSSEC record types, this is a finding.

Check Text ( C-63089r945254_chk )

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.

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 each zone.

Review the RRs for each zone and verify all of the DNSSEC record types are included for the zone.

Note: The DS (Delegation Signer) record should also exist but the requirement for it is validated under WDNS-22-000054.

RRSIG (Resource Read Signature)
DNSKEY (Public Key)
NSEC3 (Next Secure 3)

If the zone does not show all the DNSSEC record types, this is a finding.

Fix Text (F-62997r939754_fix)
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.

Fix Text (F-62997r939754_fix)

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.