Date: Sun, 21 Dec 2014 23:30:10 -0700 From: Kurt Seifried <kseifried@...hat.com> To: oss-security@...ts.openwall.com Subject: Re: can we talk about secure time? On 21/12/14 10:51 PM, Hanno Böck wrote: > On Sun, 21 Dec 2014 12:31:07 +0100 > Florian Weimer <fw@...eb.enyo.de> wrote: > >> Some folks want to run their servers within a few milliseconds of each >> other, and do not care so much about security or resiliency. > > I perfectly understand that some people need more accuracy than tlsdate > can give. However it's probably rare, right? I don't see any reason why > average consumer hardware (Desktop, smartphone etc.) would have any > problem with the 1-2 sec max inaccuracy of tlsdate. Having to reconcile multiple logs/events across widely distributed systems, especially in high volume situations, 1-2 seconds is a deal breaker. Or people running SCADA systems for industrial plants. Or people that run financial systems. A lot of them care very much about security, and require accurate time, or else there's really no point to this all. To say nothing of a post incident forensics response, where loose time would make things a lot harder to figure out. So it's not an either/or situation (care about security, or have accurate time, sometimes we need both). -- Kurt Seifried -- Red Hat -- Product Security -- Cloud PGP A90B F995 7350 148F 66BF 7554 160D 4553 5E26 7993 Download attachment "signature.asc" of type "application/pgp-signature" (820 bytes)
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