| Internet-Draft | Ranking DNS data | March 2024 |
| Hoffman, et al. | Expires 5 September 2024 | [Page] |
This document extends the list ranking the trustworthiness of domain name system (DNS) data (see Section 5.4.1 of [RFC2181]). The list is extended with entries for root server names and addresses built-in resolvers, and provided via a root hints file with the lowest trustworthiness, as wel as an entry for data which is verifiable DNSSEC secure with the highest trustworthiness. This document furthermore assigns ranked values to the positions of the list for easier reference and comparison of trustworthiness of DNS data.¶
This note is to be removed before publishing as an RFC.¶
Status information for this document may be found at https://datatracker.ietf.org/doc/draft-toorop-dnsop-ranking-dns-data/.¶
Discussion of this document takes place on the DNSOP Working Group mailing list (mailto:dnsop@ietf.org), which is archived at https://mailarchive.ietf.org/arch/browse/dnsop/. Subscribe at https://www.ietf.org/mailman/listinfo/dnsop/.¶
Source for this draft and an issue tracker can be found at https://github.com/NLnetLabs/draft-toorop-dnsop-ranking-dns-data.¶
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This Internet-Draft will expire on 5 September 2024.¶
Copyright (c) 2024 IETF Trust and the persons identified as the document authors. All rights reserved.¶
This document is subject to BCP 78 and the IETF Trust's Legal Provisions Relating to IETF Documents (https://trustee.ietf.org/license-info) in effect on the date of publication of this document. Please review these documents carefully, as they describe your rights and restrictions with respect to this document. Code Components extracted from this document must include Revised BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Revised BSD License.¶
This draft's intention is currently just to start re-evaluation and re-thinking of [RFC2181], Section 5.4.1 about ranking trustworthiness of DNS data.¶
| Value | Data |
|---|---|
| AAA | Data from a primary zone file other than occluded data, and all data that is verifiable DNSSEC secure regardless off were it came from |
| AA | Data from a zone transfer other than occluded data |
| A | The authoritative data included in the answer section of an authoritative reply |
| A- | Data from the authority section of an authoritative answer |
| BBB | Occluded data from a primary zone, or occluded data from a zone transfer |
| BB | Data from the answer section of a non-authoritative answer, and non-authoritative data from the answer section of authoritative answers |
| B | Additional information from an authoritative answer, Data from the authority section of a non-authoritative answer, Additional information from non-authoritative answers. |
| CCC | Names and addresses for the root servers from a hints file |
| CC | Names and addresses for the root servers built into resolver software |
This document does not require any IANA actions.¶
The process of replacing RRsets in a resolvers cache with the RRsets with a higher trustworthiness ranking, either passively or pro-actively by explicit querying, is crucial to the security of the DNS.¶
Thanks to all the people that contributed to the discussion surrounding the re-evaluation of how the trustworthiness of DNS data should be ranked.¶