RFC 9523 on A Secure Selection and Filtering Mechanism for the Network Time Protocol with Khronos
rfc-editor@rfc-editor.org Wed, 21 February 2024 23:28 UTC
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Subject: RFC 9523 on A Secure Selection and Filtering Mechanism for the Network Time Protocol with Khronos
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A new Request for Comments is now available in online RFC libraries. RFC 9523 Title: A Secure Selection and Filtering Mechanism for the Network Time Protocol with Khronos Author: N. Rozen-Schiff, D. Dolev, T. Mizrahi, M. Schapira Status: Informational Stream: IETF Date: February 2024 Mailbox: neta.r.schiff@gmail.com, danny.dolev@mail.huji.ac.il, tal.mizrahi.phd@gmail.com, schapiram@huji.ac.il Pages: 13 Updates/Obsoletes/SeeAlso: None I-D Tag: draft-ietf-ntp-chronos-25.txt URL: https://www.rfc-editor.org/info/rfc9523 DOI: 10.17487/RFC9523 The Network Time Protocol version 4 (NTPv4), as defined in RFC 5905, is the mechanism used by NTP clients to synchronize with NTP servers across the Internet. This document describes a companion application to the NTPv4 client, named "Khronos", that is used as a "watchdog" alongside NTPv4 and that provides improved security against time-shifting attacks. Khronos involves changes to the NTP client's system process only. Since it does not affect the wire protocol, the Khronos mechanism is applicable to current and future time protocols. This document is a product of the Network Time Protocols Working Group of the IETF. INFORMATIONAL: This memo provides information for the Internet community. It does not specify an Internet standard of any kind. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see https://www.ietf.org/mailman/listinfo/ietf-announce https://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see https://www.rfc-editor.org/search For downloading RFCs, see https://www.rfc-editor.org/retrieve/bulk Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team Association Management Solutions, LLC