----- 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 jra@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