[Ntp] Document Action: 'A Secure Selection and Filtering Mechanism for the Network Time Protocol with Khronos' to Informational RFC (draft-ietf-ntp-chronos-25.txt)
The IESG <iesg-secretary@ietf.org> Fri, 08 September 2023 16:09 UTC
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Date: Fri, 08 Sep 2023 09:09:38 -0700
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Subject: [Ntp] Document Action: 'A Secure Selection and Filtering Mechanism for the Network Time Protocol with Khronos' to Informational RFC (draft-ietf-ntp-chronos-25.txt)
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The IESG has approved the following document: - 'A Secure Selection and Filtering Mechanism for the Network Time Protocol with Khronos' (draft-ietf-ntp-chronos-25.txt) as Informational RFC This document is the product of the Network Time Protocols Working Group. The IESG contact persons are Erik Kline and Éric Vyncke. A URL of this Internet-Draft is: https://datatracker.ietf.org/doc/draft-ietf-ntp-chronos/ Technical Summary 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 specifies an extension to the NTPv4 client, named Khronos, which is used as a "watchdog" alongside NTPv4, and 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 any current or future time protocol. Working Group Summary The document has working groups consensus for publication. One person expressed opposition. Others either have added supportive comments or have been silent. Document Quality The authors have two PoC implementations: one in Python the other in C. In addition one ntpd project has setup a project to implement Khronos in the NTPd code base. Personnel The Document Shepherd for this document is Dieter Sibold. The Responsible Area Director is Erik Kline.