Re: [Ntp] Roughtime and Delay Attacks
Tony Finch <dot@dotat.at> Tue, 02 April 2019 15:26 UTC
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Date: Tue, 02 Apr 2019 16:26:53 +0100
From: Tony Finch <dot@dotat.at>
To: kristof.teichel@ptb.de
cc: Tal Mizrahi <tal.mizrahi.phd@gmail.com>, ntp@ietf.org, Aanchal Malhotra <aanchal4@bu.edu>, Watson Ladd <watsonbladd@gmail.com>
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Subject: Re: [Ntp] Roughtime and Delay Attacks
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kristof.teichel@ptb.de <kristof.teichel@ptb.de> wrote: > - Roughtime (AFAIK) still needs to include some considerations of RTT in > its analysis somehow (see below). Maybe roughtime clients should use the Chronos clock selection algorithm, because it is supposed to be resistant to delay attacks. https://tools.ietf.org/html/draft-schiff-ntp-chronos-02 Tony. -- f.anthony.n.finch <dot@dotat.at> http://dotat.at/ North Foreland to Selsey Bill: Westerly or southwesterly 5 or 6, becoming variable 3 or 4. Slight, occasionally moderate at first. Rain or showers, occasionally thundery. Good, occasionally moderate.
- [Ntp] Roughtime and Delay Attacks Tal Mizrahi
- Re: [Ntp] Roughtime and Delay Attacks kristof.teichel
- Re: [Ntp] Roughtime and Delay Attacks Tal Mizrahi
- Re: [Ntp] Roughtime and Delay Attacks Tony Finch
- Re: [Ntp] Roughtime and Delay Attacks kristof.teichel
- Re: [Ntp] Roughtime and Delay Attacks Hal Murray
- Re: [Ntp] Roughtime and Delay Attacks kristof.teichel
- Re: [Ntp] Roughtime and Delay Attacks Stewart Bryant
- Re: [Ntp] Roughtime and Delay Attacks Watson Ladd
- Re: [Ntp] Roughtime and Delay Attacks Greg.Dowd
- Re: [Ntp] Roughtime and Delay Attacks Joachim Fabini
- Re: [Ntp] Roughtime and Delay Attacks Stewart Bryant