Date: Mon, 31 Jul 2006 22:08:52 -0300 (ADT) From: User Freebsd <freebsd@hub.org> To: Xiao-Yong Jin <xj2106@columbia.edu> Cc: freebsd-questions@freebsd.org Subject: Re: Gotta start somewhere ... how many of us are really out there? Message-ID: <20060731220830.B27679@ganymede.hub.org> In-Reply-To: <871ws1v261.fsf@photon.homelinux.org> References: <20060728164526.E27679@ganymede.hub.org> <df9ac37c0607281319s5da0f64ese5fa57df1ef11a4d@mail.gmail.com> <ef10de9a0607282139i51fdde5ch58525fa3347364d2@mail.gmail.com> <87slklj9hu.fsf@photon.homelinux.org> <20060729021007.F27679@ganymede.hub.org> <44CD41EC.6030605@freebsd.org> <20060730233839.I27679@ganymede.hub.org> <44CDAA98.3030702@freebsd.org> <44CDE02F.4090604@dial.pipex.com> <44CE7DD0.9070902@childeric.freeserve.co.uk> <871ws1v261.fsf@photon.homelinux.org>
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On Mon, 31 Jul 2006, Xiao-Yong Jin wrote: > Chris Whitehouse <chris@childeric.freeserve.co.uk> writes: > >> Alex Zbyslaw wrote: >>> Counting portsnap and cvsup accesses is non-intrusive - i.e. nothing >>> sent from local host - will count systems from any version of >>> FreeBSD, but will never count everything because sites with multiple >>> hosts may easily have local propagation mechanisms. But you will >>> get an order of magnitude. However, how do you deal with systems >>> with variable IPs? I don't know enough about the internals of >>> either portsnap or cvsup to know if there is some kind of unique id >>> associated with hosts. If not, then you'd wildly over count for >>> many home-based, variable IP systems. >> >> Maybe not so many, my non-static ip hasn't changed since I signed up 3 >> years ago despite turning off the modem for the odd day or >> two. Another network I look after also hasn't changed in a year. >> > But one can't rely on that. You'll definitely see more than one ip > associated with my laptop, if I move it around. > > A more reliable way that I can think of is generating a unique ID > number when a system finishes installation or upon the first boot. > However, it may involve some additional privacy problem. What do you > think? How does Solaris generate its 'hostid'? Is it a hardware/sparc thing, or software? ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email . scrappy@hub.org MSN . scrappy@hub.org Yahoo . yscrappy Skype: hub.org ICQ . 7615664
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