[dnssd] Adam Roach's No Objection on draft-ietf-dnssd-prireq-05: (with COMMENT)
Adam Roach via Datatracker <noreply@ietf.org> Thu, 05 March 2020 04:50 UTC
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Date: Wed, 04 Mar 2020 20:50:02 -0800
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Subject: [dnssd] Adam Roach's No Objection on draft-ietf-dnssd-prireq-05: (with COMMENT)
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Adam Roach has entered the following ballot position for draft-ietf-dnssd-prireq-05: No Objection When responding, please keep the subject line intact and reply to all email addresses included in the To and CC lines. (Feel free to cut this introductory paragraph, however.) Please refer to https://www.ietf.org/iesg/statement/discuss-criteria.html for more information about IESG DISCUSS and COMMENT positions. The document, along with other ballot positions, can be found here: https://datatracker.ietf.org/doc/draft-ietf-dnssd-prireq/ ---------------------------------------------------------------------- COMMENT: ---------------------------------------------------------------------- Section 3.2: > Information conveyed via multicast messages can be > obtained by an on-link attacker, while unicast messages are only > available to MITM attackers. I don’t think this is accurate. Given that many of the environments under consideration (e.g., airport WiFi) use unencrypted wireless transmission combined with a captive portal. In these cases, an eavesdropper on the same channel can snoop on even unicast traffic without mounting an MITM attack. ---------------------------------------------------------------------- General: The document speaks of randomization of identifiers, including those commonly used by users to identify which services they want to connect to. While the current state of affairs may list a directory such as: • Adam’s iPhone • David’s Google Pixel 3 • Alice’s Laptop (allowing me to select something based on its published name) This document seems to propose a future state where such directories are instead presented as: • {da566203-0320-4604-aa14-f58ae7bea00c} • {6c0952a5-a573-4d92-9d4a-a4bc111a35d8} • {785bed6b-1355-4e7e-ad57-b5ce27e83e56} I find it a bit surprising that this document doesn’t include at least a cursory mention of the difficulty users may have in device rendezvous under such a scheme and potential solutions to such issues (e.g., using RFID or QR codes to provide pairing information).
- [dnssd] Adam Roach's No Objection on draft-ietf-d… Adam Roach via Datatracker
- Re: [dnssd] Adam Roach's No Objection on draft-ie… Adam Roach
- Re: [dnssd] Adam Roach's No Objection on draft-ie… Christian Huitema
- Re: [dnssd] Adam Roach's No Objection on draft-ie… Christian Huitema
- Re: [dnssd] Adam Roach's No Objection on draft-ie… Christian Huitema
- Re: [dnssd] Adam Roach's No Objection on draft-ie… Adam Roach