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Re: [dns-privacy] RFC 9103 on DNS Zone Transfer over TLS

Brian Haberman <brian@innovationslab.net> Tue, 24 August 2021 11:36 UTC

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From: Brian Haberman <brian@innovationslab.net>
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Date: Tue, 24 Aug 2021 07:36:03 -0400
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Subject: Re: [dns-privacy] RFC 9103 on DNS Zone Transfer over TLS
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Thanks to everyone who helped move this document through the process!

On 8/24/21 12:28 AM, rfc-editor@rfc-editor.org wrote:
> A new Request for Comments is now available in online RFC libraries.
> 
>         
>         RFC 9103
> 
>         Title:      DNS Zone Transfer over TLS 
>         Author:     W. Toorop,
>                     S. Dickinson,
>                     S. Sahib,
>                     P. Aras,
>                     A. Mankin
>         Status:     Standards Track
>         Stream:     IETF
>         Date:       August 2021
>         Mailbox:    willem@nlnetlabs.nl,
>                     sara@sinodun.com,
>                     shivankaulsahib@gmail.com,
>                     paras@salesforce.com,
>                     allison.mankin@gmail.com
>         Pages:      32
>         Updates:    RFC 1995, RFC 5936, RFC 7766
> 
>         I-D Tag:    draft-ietf-dprive-xfr-over-tls-12.txt
> 
>         URL:        https://www.rfc-editor.org/info/rfc9103
> 
>         DOI:        10.17487/RFC9103
> 
> DNS zone transfers are transmitted in cleartext, which gives
> attackers the opportunity to collect the content of a zone by
> eavesdropping on network connections. The DNS Transaction Signature
> (TSIG) mechanism is specified to restrict direct zone transfer to
> authorized clients only, but it does not add confidentiality. This
> document specifies the use of TLS, rather than cleartext, to prevent
> zone content collection via passive monitoring of zone transfers: XFR
> over TLS (XoT). Additionally, this specification updates RFC 1995 and
> RFC 5936 with respect to efficient use of TCP connections and RFC
> 7766 with respect to the recommended number of connections between a
> client and server for each transport.
> 
> This document is a product of the DNS PRIVate Exchange Working Group of the IETF.
> 
> This is now a Proposed Standard.
> 
> STANDARDS TRACK: This document specifies an Internet Standards Track
> protocol for the Internet community, and requests discussion and suggestions
> for improvements.  Please refer to the current edition of the Official
> Internet Protocol Standards (https://www.rfc-editor.org/standards) for the 
> standardization state and status of this protocol.  Distribution of this 
> memo is unlimited.
> 
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> 
> The RFC Editor Team
> Association Management Solutions, LLC
> 
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