[Ntp] 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: [Ntp] 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,
        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
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