From owner-freebsd-security Sun Jul 7 0:33:48 2002 Delivered-To: freebsd-security@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 3A76437B400 for ; Sun, 7 Jul 2002 00:33:46 -0700 (PDT) Received: from kilgore.blindfaith.org (adsl-64-163-155-3.dsl.snfc21.pacbell.net [64.163.155.3]) by mx1.FreeBSD.org (Postfix) with ESMTP id 6A7AE43E3B for ; Sun, 7 Jul 2002 00:33:45 -0700 (PDT) (envelope-from blyon@blindfaith.org) Received: from kilgore.blindfaith.org (localhost.blindfaith.org [127.0.0.1]) by kilgore.blindfaith.org (8.12.2/8.12.2) with ESMTP id g677XfHB004796; Sun, 7 Jul 2002 00:33:41 -0700 (PDT) (envelope-from blyon@blindfaith.org) Received: from localhost (blyon@localhost) by kilgore.blindfaith.org (8.12.2/8.12.2/Submit) with ESMTP id g677XbWO004793; Sun, 7 Jul 2002 00:33:37 -0700 (PDT) (envelope-from blyon@blindfaith.org) X-Authentication-Warning: kilgore.blindfaith.org: blyon owned process doing -bs Date: Sun, 7 Jul 2002 00:33:37 -0700 (PDT) From: Ben Lyon To: "David G . Andersen" Cc: Ross Wheeler , twig les , Brian Reichert , Kim Okasawa , _@r4k.net, freebsd-security@FreeBSD.ORG Subject: Re: NTP security - (was Any security issues with root's cron job?) In-Reply-To: <20020705224406.B23004@cs.utah.edu> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org Ship over to truetime.com and have a look-see. Nice self-contained 1U GPS stratum 1 timeservers. Less than $2000 if I remember correctly.. -------------------------------------------------------------------- Ben Lyon blyon@blindfaith.org On Fri, 5 Jul 2002, David G . Andersen wrote: > Ross Wheeler just mooed: > > > > Whip over to ebay, buy a cheap second-hand GPS and cable, stick it into > > one of your servers and presto - instant "stratum 1" time reference for > > One thing to note with this approach is that you have to pick > your GPS carefully. Hand-helds often have really terrible time output; > a friend of mine used his PCMCIA GPS and was getting worse-than-NTP > time from it. If you can find it, look for a model that's optimized > for time synch. Trimble, UT+, etc. There's a good list of them in > the NTP faq at http://www.ntp.org/ > > > under a hundred bucks. Under your control (I can't see anyone taking over > > or DoSing the whole of the GPS network any time soon, do you?) > > Certainly not to attack one internet site, at least. :) > > -Dave > > -- > work: dga@lcs.mit.edu me: dga@pobox.com > MIT Laboratory for Computer Science http://www.angio.net/ > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-security" in the body of the message > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message