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Microsoft Windows Server Domain Name System (DNS) Security Technical Implementation Guide

Version: 2

Release: 5 Benchmark Date: 01 Jul 2026

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SV-259334r960735_ruleThe Windows DNS Server must restrict incoming dynamic update requests to known clients.
SV-259335r1156947_ruleThe Windows DNS Server must be configured to record who added/modified/deleted DNS zone information.
SV-259336r1156948_ruleThe Windows DNS Server must notify the DNS administrator in the event of an error validating another DNS server's identity.
SV-259337r1156965_ruleThe Windows DNS Server log must be enabled.
SV-259338r1028386_ruleThe "Manage auditing and security log" user right must be assigned only to authorized personnel.
SV-259339r961104_ruleThe validity period for the Resource Record Signatures (RRSIGs) covering the Delegation Signer (DS) Resource Record (RR) for a zone's delegated children must be no less than two days and no more than one week.
SV-259340r1156964_ruleThe Windows DNS name servers for a zone must be geographically dispersed.
SV-259341r1156949_ruleThe Windows DNS Server must prohibit recursion on authoritative name servers for which forwarders have not been configured for external queries.
SV-259342r1156949_ruleForwarders on an authoritative Windows DNS Server, if enabled for external resolution, must forward only to an internal, non-Active Directory (AD)-integrated DNS server or to the DOD Enterprise Recursive Services (ERS).
SV-259343r1156949_ruleThe Windows DNS Server with a caching name server role must restrict recursive query responses to only the IP addresses and IP address ranges of known supported clients.
SV-259344r1137675_ruleThe Windows DNS Server must implement cryptographic mechanisms to detect changes to information during transmission.
SV-259345r961863_ruleThe validity period for the Resource Record Signatures (RRSIGs) covering a zone's DNSKEY RRSet must be no less than two days and no more than one week.
SV-259346r1156952_ruleNSEC3 must be used for all internal DNS zones.
SV-259347r961863_ruleThe Windows DNS Server's zone files must have NS records that point to active name servers authoritative for the domain specified in that record.
SV-259348r1156953_ruleAll authoritative name servers for a zone must be located on different network segments.
SV-259349r961863_ruleAll authoritative name servers for a zone must have the same version of zone information.
SV-259350r1156954_ruleThe Windows DNS Server must be configured to enable DNSSEC Resource Records (RRs).
SV-259351r961863_ruleThe digital signature algorithm used for DNSSEC-enabled zones must be FIPS-compatible.
SV-259352r961863_ruleFor 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.
SV-259353r961863_ruleIn a split DNS configuration between the external and internal networks, the external name server must be configured to not be reachable from inside resolvers.
SV-259354r961863_rulePrimary authoritative name servers must be configured to only receive zone transfer requests from specified secondary name servers.
SV-259355r1156956_ruleThe Windows DNS Servers zone database files must not be accessible for edit/write by users and/or processes other than the Windows DNS Server service account and/or the DNS database administrator.
SV-259356r961863_ruleThe Windows DNS Server must implement internal/external role separation.
SV-259357r961863_ruleThe Windows DNS Server authoritative for local zones must only point root hints to the DNS servers that host the internal root domain.
SV-259358r961863_ruleThe Windows DNS Servers zone files must not include resource records that resolve to a fully qualified domain name residing in another zone.
SV-259359r1156962_ruleThe Windows DNS Server's zone files must not include CNAME records pointing to a zone with lesser security for more than six months.
SV-259360r961863_ruleNonroutable IPv6 link-local scope addresses must not be configured in any zone.
SV-259361r1018796_ruleAAAA addresses must not be configured in a zone for hosts that are not dual stack.
SV-259363r960999_ruleThe Windows DNS Server must uniquely identify the other DNS server before responding to a server-to-server transaction.
SV-259364r961503_ruleThe secondary Windows DNS name servers must cryptographically authenticate zone transfers from primary name servers.
SV-259365r960735_ruleThe Windows DNS primary server must only send zone transfers to a specific list of secondary name servers.
SV-259366r1156946_ruleThe Windows DNS Server must provide its identity with returned DNS information by enabling DNSSEC and TSIG/SIG(0).
SV-259367r1212357_ruleThe Windows DNS Server must be configured to enforce authorized access to the corresponding private key.
SV-259368r1212359_ruleThe Windows DNS Server key file must be owned by the account under which the Windows DNS Server service is run.
SV-259370r961041_ruleThe private key corresponding to the zone signing key (ZSK) must only be stored on the name server that does support dynamic updates.
SV-259371r1212361_ruleThe Windows DNS Server must implement a local cache of revocation data for PKI authentication.
SV-259372r961863_ruleThe salt value for zones signed using NSEC3 resource records (RRs) must be changed every time the zone is completely re-signed.
SV-259373r961101_ruleThe Windows DNS Server must include data origin with authoritative data the system returns in response to external name/address resolution queries.
SV-259374r1156950_ruleThe Windows DNS Server's IP address must be statically defined and configured locally on the server.
SV-259375r1156950_ruleThe Windows DNS Server must return data information in response to internal name/address resolution queries.
SV-259376r987696_ruleThe Windows DNS Server must use DNSSEC data within queries to confirm data origin to DNS resolvers.
SV-259377r961581_ruleWINS lookups must be disabled on the Windows DNS Server.
SV-259378r961581_ruleThe Windows DNS Server must use DNSSEC data within queries to confirm data integrity to DNS resolvers.
SV-259379r961104_ruleThe Windows DNS Server must be configured with the Delegation Signer (DS) Resource Records (RR) carrying the signature for the RR that contains the public key of the child zone.
SV-259380r961107_ruleThe Windows DNS Server must enforce approved authorizations between DNS servers using digital signatures in the Resource Record Set (RRSet).
SV-259381r961107_ruleThe Name Resolution Policy Table (NRPT) must be configured in Group Policy to enforce clients to request DNSSEC validation for a domain.
SV-259382r961107_ruleThe Windows DNS Server must be configured to validate an authentication chain of parent and child domains via response data.
SV-259383r961107_ruleTrust anchors must be exported from authoritative Windows DNS Servers and distributed to validating Windows DNS Servers.
SV-259384r961107_ruleAutomatic Update of Trust Anchors must be enabled on key rollover.
SV-259385r961584_ruleThe Windows DNS secondary servers must request data origin authentication verification from the primary server when requesting name/address resolution.
SV-259386r961587_ruleThe Windows DNS secondary server must request data integrity verification from the primary server when requesting name/address resolution.
SV-259387r961590_ruleThe Windows DNS secondary server must validate data integrity verification on the name/address resolution responses received from primary name servers.
SV-259388r961593_ruleThe Windows DNS secondary server must validate data origin verification authentication on the name/address resolution responses received from primary name servers.
SV-259389r1043178_ruleThe Windows DNS Server must protect the authenticity of zone transfers via transaction signing.
SV-259390r1043178_ruleThe Windows DNS Server must protect the authenticity of dynamic updates via transaction signing.
SV-259391r1043178_ruleThe Windows DNS Server must protect the authenticity of query responses via DNSSEC.
SV-259392r961596_ruleThe Windows DNS Server must use an approved DOD PKI certificate authority.
SV-259393r1028387_ruleThe Windows DNS Server must protect secret/private cryptographic keys while at rest.
SV-259394r961599_ruleThe Windows DNS Server must only contain zone records that have been validated annually.
SV-259395r961152_ruleThe Windows DNS Server must restrict individuals from using it for launching denial-of-service (DoS) attacks against other information systems.
SV-259396r961155_ruleThe Windows DNS Server must use DNS Notify to prevent denial of service (DoS) through increase in workload.
SV-259397r961632_ruleThe Windows DNS Server must protect the integrity of transmitted information.
SV-259398r961638_ruleThe Windows DNS Server must maintain the integrity of information during preparation for transmission.
SV-259399r961641_ruleThe Windows DNS Server must maintain the integrity of information during reception.
SV-259400r1137676_ruleThe Windows DNS Server must implement NIST FIPS-validated cryptography for provisioning digital signatures, generating cryptographic hashes, and protecting unclassified information requiring confidentiality.
SV-259401r961158_ruleThe Windows DNS Server must be configured to only allow zone information that reflects the environment for which it is authoritative, including IP ranges and IP versions.
SV-259402r1156951_ruleThe Windows DNS Server must follow procedures to re-role a secondary name server as the primary name server if the primary name server permanently loses functionality.
SV-259403r1001264_ruleThe DNS Name Server software must be configured to refuse queries for its version information.
SV-259404r1001265_ruleThe HINFO, RP, TXT, and LOC RR types must not be used in the zone SOA.
SV-259405r1156945_ruleThe Windows DNS Server must, when a component failure is detected, activate a notification to the system administrator.
SV-259406r961734_ruleThe Windows DNS Server must verify the correct operation of security functions upon startup and/or restart, upon command by a user with privileged access, and/or every 30 days.
SV-259407r961734_ruleThe Windows DNS Server must verify the correct operation of security functions upon system startup and/or restart, upon command by a user with privileged access, and/or every 30 days.
SV-259408r961737_ruleThe Windows DNS Server must log the event and notify the system administrator when anomalies in the operation of the signed zone transfers are discovered.
SV-259409r961185_ruleThe Windows DNS Server must be configured to notify the information system security officer (ISSO), information system security manager (ISSM), or DNS administrator when functionality of DNSSEC/TSIG has been removed or broken.
SV-259410r1156963_ruleA unique Transaction Signature (TSIG) key must be generated for each pair of communicating hosts.
SV-259411r961062_ruleThe DNS server implementation must employ strong authenticators in the establishment of nonlocal maintenance and diagnostic sessions.
SV-259412r961125_ruleIn the event of a system failure, the Windows DNS Server must preserve any information necessary to determine cause of failure and any information necessary to return to operations with least disruption to mission processes.
SV-259414r1156961_ruleThe private keys corresponding to both the zone signing key (ZSK) and the key signing key (KSK) must not be kept on the DNSSEC-aware primary authoritative name server when the name server does not support dynamic updates.
SV-259415r960948_ruleThe Windows DNS Server audit records must be backed up at least every seven days onto a different system or system component than the system or component being audited.
SV-259416r961863_ruleIn 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.
SV-259417r961155_ruleWindows DNS response rate limiting (RRL) must be enabled.