----- Original Message ----- > From: "Mel Beckman via Outages" <outages@outages.org> > Subject: Re: [outages] DNS SERVFAIL for nist.gov
> I support many financial networks, and comply with the same FINRA rule 6820 > you > do. This rule doesn’t state that the time must be synchronized over the > Internet using public IP addresses, but only “to within a fifty (50) > millisecond tolerance of the time maintained by the atomic clock” at NIST . > Because GPS clock times are legally traceable to NIST, and deviation logs are They are? *Legally* traceable? I've just read the first couple pages of Judah's 2941 PDF, and the things it says to me suggest that you cannot make that assertion *about the GPS system*, only about specific measurements it produces, and that distinction seems material in this context. > available in real-time, there is no reason to depend on IP-based NTP over the > Internet, and good reason not to as today’s event demonstrates. The 1ms > accuracy is well within the 50ms limit. Are you missing it, or are you purposely ignoring what he said? He is *not* "depending on [...] NTP". He merely has to have it and log it to comply with FINRA, or so his counsel tells him. I'm declaring this part of the thread out-of-bounds for outages anyway; take it to -discuss please, if you want to continue ignoring Matt. :-) Cheers, -- jr '<admin/>' a -- Jay R. Ashworth Baylink j...@baylink.com Designer The Things I Think RFC 2100 Ashworth & Associates http://www.bcp38.info 2000 Land Rover DII St Petersburg FL USA BCP38: Ask For It By Name! +1 727 647 1274
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