From owner-freebsd-security Fri Aug 20 20:27:55 1999 Delivered-To: freebsd-security@freebsd.org Received: from Genesis.Denninger.Net (209-176-244-82.inil.com [209.176.244.82]) by hub.freebsd.org (Postfix) with ESMTP id EE085153E5 for ; Fri, 20 Aug 1999 20:27:32 -0700 (PDT) (envelope-from karl@Genesis.Denninger.Net) Received: (from karl@localhost) by Genesis.Denninger.Net (8.9.3/8.8.2) id WAA83968; Fri, 20 Aug 1999 22:24:19 -0500 (CDT) Message-ID: <19990820222419.A83963@Denninger.Net> Date: Fri, 20 Aug 1999 22:24:19 -0500 From: Karl Denninger To: Jon Hamilton , Greg Black Cc: Will Andrews , Brett Glass , freebsd-security@FreeBSD.ORG Subject: Re: Securelevel 3 ant setting time References: <19990820214657.1605.qmail@alice.gba.oz.au> <19990821031948.09B2B1D@woodstock.monkey.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.2i In-Reply-To: <19990821031948.09B2B1D@woodstock.monkey.net>; from Jon Hamilton on Fri, Aug 20, 1999 at 10:19:48PM -0500 Organization: Karl's Sushi and Packet Smashers X-Die-Spammers: Spammers will be LARTed and the remains fed to my cat Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Fri, Aug 20, 1999 at 10:19:48PM -0500, Jon Hamilton wrote: > > In message <19990820214657.1605.qmail@alice.gba.oz.au>, Greg Black wrote: > } > Xntpd is not that difficult. Unlike ntpdate, it can update your system cloc > } k > } > while also acting as a time server for your local network, reducing bandwid > } th > } > costs (yes, minimal, if you have a very small network, but still worth time > } and > } > money.) It is also more reliable and far more featureful than ntpdate (hey, > } > encryption compensation!). > } > } Just as a bit of extra information, xntpd is useless for small > } networks that don't have constant connectivity to time servers. > > Absolutely untrue. There's value in keeping a group of machines > synchronized to _each other_, regardless of whether they're also > synchronized to the correct time. It is true that _for some purposes_ > xntpd isn't all that useful in an intermittently-connected scenario, > but that doesn't render it completely devoid of any value. > > -- > Jon Hamilton > hamilton@pobox.com Its not at all difficult to wire a GPS to be the "master" upon which XNTPD syncs. Without PPS output you won't be COMPLETELY accurate, but a few tens of milliseconds should be good enough for most purposes :-) -- -- Karl Denninger (karl@denninger.net) Web: childrens-justice.org Tired of the broken divorce system in the United States and what it's doing to our kids? SIGN the online petition for equal parental - and children's - rights at the above URL. Make a difference in a kid's life today. Real-time chat now available from the above web page To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message