[Ntp] Re: Gorry Fairhurst's No Objection on draft-ietf-ntp-over-ptp-06: (with COMMENT)
Miroslav Lichvar <mlichvar@redhat.com> Tue, 14 October 2025 14:00 UTC
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Date: Tue, 14 Oct 2025 15:59:44 +0200
From: Miroslav Lichvar <mlichvar@redhat.com>
To: Gorry Fairhurst <gorry@erg.abdn.ac.uk>
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Subject: [Ntp] Re: Gorry Fairhurst's No Objection on draft-ietf-ntp-over-ptp-06: (with COMMENT)
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On Tue, Sep 30, 2025 at 12:49:14AM -0700, Gorry Fairhurst via Datatracker wrote: > ---------------------------------------------------------------------- > COMMENT: > ---------------------------------------------------------------------- > > Thank you for preapring this document, and thanks to the review by Colin. > I do not see any new transport-related concerns. Thank you for the review. > The Security Considerations notes that “The PTP transport prevents NTP clients > from randomizing their source port”. I wanted to understand why, but then found > this text earlier: The paragraph in Security Considerations is now improved (in git) to explain the reason: The PTP transport prevents NTP clients from randomizing their source port as described in [RFC9109], because both requests and responses need to be sent to the PTP port in order to get a hardware receive timestamp and corrections from PTP transparent clocks. -- Miroslav Lichvar
- [Ntp] Gorry Fairhurst's No Objection on draft-iet… Gorry Fairhurst via Datatracker
- [Ntp] Re: Gorry Fairhurst's No Objection on draft… Miroslav Lichvar
- [Ntp] Re: Gorry Fairhurst's No Objection on draft… Gorry (erg)