[Ntp] Fwd: Circular dependencies
Mark Andrews <marka@isc.org> Wed, 11 November 2020 23:08 UTC
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From: Mark Andrews <marka@isc.org>
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To: NTP WG <ntp@ietf.org>
Date: Thu, 12 Nov 2020 10:08:05 +1100
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Subject: [Ntp] Fwd: Circular dependencies
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> Begin forwarded message: > > From: Mark Andrews <marka@isc.org> > Subject: Re: [Ntp] Circular dependencies > Date: 12 November 2020 at 10:07:33 AEDT > To: Daniel Franke <dfoxfranke@gmail.com> > > You just need to set CD=1 to tell the validating resolver to not validate. > > DNSSEC doesn’t have a flag that says “just ignore timestamps” when validating > but you can do that in the application with CD=1 + DO=1 responses. > >> On 12 Nov 2020, at 09:42, Daniel Franke <dfoxfranke@gmail.com> wrote: >> >> Is there something wrong with "don't do that" as a solution? Nothing >> in NTS relies on or benefits from DNSSEC, so there's no reason to >> validate it. If the system resolver validates automatically and >> there's no way for an application to ask it not to, then the system >> resolver is (temporarily) broken and will need to be bypassed. >> >> On Wed, Nov 11, 2020 at 1:04 PM Watson Ladd <watsonbladd@gmail.com> wrote: >>> >>> Dear NTP WG, >>> >>> I just realized there is a mailing list bug report that's a lot more >>> interesting than it seems. They have a DNSSEC validating resolver and >>> were using an NTP daemon to set the clock (and the RTC was busted) But >>> the time is needed to verify liveness of the signatures for DNSSEC to >>> validate, and without the names don't resolve, including the NTP >>> server names. >>> >>> This is probably a bigger issue with NTS, as certs with IP addresses >>> are harder to get. Roughtime can use its own keys, but does still rely >>> on the DNS often, so it won't necessarily be a solution. Any ideas? >>> >>> Sincerely, >>> Watson Ladd >>> >>> _______________________________________________ >>> ntp mailing list >>> ntp@ietf.org >>> https://www.ietf.org/mailman/listinfo/ntp >> >> _______________________________________________ >> ntp mailing list >> ntp@ietf.org >> https://www.ietf.org/mailman/listinfo/ntp > > -- > Mark Andrews, ISC > 1 Seymour St., Dundas Valley, NSW 2117, Australia > PHONE: +61 2 9871 4742 INTERNET: marka@isc.org > -- Mark Andrews, ISC 1 Seymour St., Dundas Valley, NSW 2117, Australia PHONE: +61 2 9871 4742 INTERNET: marka@isc.org
- [Ntp] Circular dependencies Watson Ladd
- Re: [Ntp] Circular dependencies Tony Finch
- Re: [Ntp] Circular dependencies Daniel Franke
- Re: [Ntp] Circular dependencies Mark Andrews
- [Ntp] Fwd: Circular dependencies Mark Andrews
- Re: [Ntp] Circular dependencies Hal Murray
- Re: [Ntp] Circular dependencies Danny Mayer
- [Ntp] Antw: [EXT] Circular dependencies Ulrich Windl
- Re: [Ntp] Circular dependencies Philip Prindeville
- Re: [Ntp] Circular dependencies Warner Losh
- Re: [Ntp] Circular dependencies Warner Losh
- Re: [Ntp] Circular dependencies Hal Murray
- Re: [Ntp] Circular dependencies Mark Andrews
- Re: [Ntp] Circular dependencies Hal Murray
- Re: [Ntp] Circular dependencies Mark Andrews
- Re: [Ntp] Circular dependencies Mark Andrews