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Domain Name System (DNS) Security Requirements Guide

Rules, Groups, and Values defined within the XCCDF Benchmark

  • The DNS server implementation must, for password-based authentication, store passwords using an approved salted key derivation function, preferably using a keyed hash.

    Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter pass...
    Rule Medium Severity
  • SRG-APP-000855

    Group
  • The DNS server implementation must, for password-based authentication, require immediate selection of a new password upon account recovery.

    Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter pass...
    Rule Medium Severity
  • SRG-APP-000860

    Group
  • The DNS server implementation must, for password-based authentication, allow user selection of long passwords and passphrases, including spaces and all printable characters.

    Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter pass...
    Rule Medium Severity
  • SRG-APP-000865

    Group
  • SRG-APP-000870

    Group
  • The DNS server implementation must, for password-based authentication, enforce organization-defined composition and complexity rules.

    Password-based authentication applies to passwords regardless of whether they are used in single-factor or multifactor authentication. Long passwords or passphrases are preferable over shorter pass...
    Rule Medium Severity
  • SRG-APP-000875

    Group
  • The DNS server implementation must, for public key-based authentication, implement a local cache of revocation data to support path discovery and validation.

    Public key cryptography is a valid authentication mechanism for individuals, machines, and devices. For PKI solutions, status information for certification paths includes certificate revocation lis...
    Rule Medium Severity
  • SRG-APP-000880

    Group
  • The DNS server implementation must protect nonlocal maintenance sessions by separating the maintenance session from other network sessions with the system by logically separated communications paths.

    Nonlocal maintenance and diagnostic activities are conducted by individuals who communicate through either an external or internal network. Communications paths can be logically separated using enc...
    Rule Medium Severity
  • SRG-APP-000910

    Group
  • The DNS server implementation must include only approved trust anchors in trust stores or certificate stores managed by the organization.

    Public key infrastructure (PKI) certificates are certificates with visibility external to organizational systems and certificates related to the internal operations of systems, such as application-...
    Rule Medium Severity
  • SRG-APP-000925

    Group
  • The DNS server implementation must compare the internal system clocks on an organization-defined frequency with organization-defined authoritative time source.

    Synchronization of internal system clocks with an authoritative source provides uniformity of time stamps for systems with multiple system clocks and systems connected over a network.
    Rule Medium Severity

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