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Assessment Title
Rule Text
The DNS server implementation must utilize cryptographic mechanisms to prevent unauthorized disclosure of non-DNS data stored on the DNS server.
Description
Discussion Text
Applications handling data requiring "data-at-rest" protections must employ cryptographic mechanisms to prevent unauthorized disclosure and modification of the information at rest.
Selection of a cryptographic mechanism is based on the need to protect the confidentiality of organizational information. The strength of mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).
The DNS server must protect the confidentiality of keys (for TSIG/SIG(0) and DNSSEC). There is no need to protect the confidentiality of DNS information because it is accessible by all devices that can contact the server.
Selection of a cryptographic mechanism is based on the need to protect the confidentiality of organizational information. The strength of mechanism is commensurate with the security category and/or classification of the information. Organizations have the flexibility to either encrypt all information on storage devices (i.e., full disk encryption) or encrypt specific data structures (e.g., files, records, or fields).
The DNS server must protect the confidentiality of keys (for TSIG/SIG(0) and DNSSEC). There is no need to protect the confidentiality of DNS information because it is accessible by all devices that can contact the server.
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