Date: Thu, 19 Jul 2001 16:33:05 -0500 From: Jeff Sapp <jasapp@pelennor.net> To: Beech Rintoul <akbeech@anchoragerescue.org> Cc: freebsd-questions@freebsd.org Subject: Re: netcraft uptime Message-ID: <20010719163305.A27165@pelennor.net> In-Reply-To: <01071912454000.51519@galaxy.anchoragerescue.org>; from akbeech@anchoragerescue.org on Thu, Jul 19, 2001 at 12:45:40PM -0800 References: <01071912454000.51519@galaxy.anchoragerescue.org>
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I believe that they figure a computer's uptime by looking at the timestamp option of tcp packets. The field is incremented every 500ms, and is set to 0 on reboot. You can turn the tcp options on by: sysctl -w net.inet.tcp.rfc1323=1 The rfc has lots of cool stuff and it's worth a read. Jeff On Thu, Jul 19, 2001 at 12:45:40PM -0800, Beech Rintoul wrote: > I was looking at netcraft's site today and noticed that uptime doesn't work > with FBSD servers. Anyboy have any info on this? Like how they do it and can > my server be configured to show it? > > TIA > > Beech > -- > Micro$oft: "Where can we make you go today?" > ------------------------------------------------------------------- > Beech Rintoul - IT Manager - Instructor - akbeech@anchoragerescue.org > /"\ ASCII Ribbon Campaign | Anchorage Gospel Rescue Mission > \ / - NO HTML/RTF in e-mail | P.O. Box 230510 > X - NO Word docs in e-mail | Anchorage, AK 99523-0510 > / \ ----------------------------------------------------------------- > > > > > > > > > > > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-questions" in the body of the message To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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