Date: Wed, 6 Dec 2006 11:53:25 -0600 From: Josh Paetzel <josh@tcbug.org> To: Julian Elischer <julian@elischer.org> Cc: freebsd-net@freebsd.org, Benjamin Adams <freebsdworld@gmail.com>, Brett Glass <brett@lariat.net> Subject: Re: Bandwidth Monitoring program Message-ID: <200612061153.26040.josh@tcbug.org> In-Reply-To: <4576EB9D.2040300@elischer.org> References: <6199c3dc0612050848g16a0911dga145485ba14bf21f@mail.gmail.com> <200612060313.23621.josh@tcbug.org> <4576EB9D.2040300@elischer.org>
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On Wednesday 06 December 2006 10:11, Julian Elischer wrote: > Josh Paetzel wrote: > > On Tuesday 05 December 2006 23:52, Brett Glass wrote: > >> Add a few IPFW "count" rules to count the bytes and packets. > >> Then, periodically harvest and reset the counters via a cron job > >> and write the results to a file. You can then prepare tables and > >> charts which are as simple or as fancy as you please, without > >> resorting to SNMP (which isn't secure). A little bit of code in > >> your favorite scripting language will do it. And of course you > >> can output to a graphing package, though for me a simple > >> histogram using asterisks has sufficient precision in most > >> cases. > >> > >> --Brett Glass > > > > Just curious.....but where is he going to run ipfw? I seriously > > doubt his router can run it, and what good is it going to do him > > to run it on a machine on the network if the network is switched? > > It's not going to be able to see any of the traffic other than > > what that specific machine is sending/receiving. > > run ipfw in layer 2 after turning on promiscuous mode and attaching > it to a hub. > > I do it all the time. > He specifically said in his original post that putting a machine between the router and his lan wasn't an option. His question was, "Is there a program where I can see whats going on from the computer on that network?" The answer to that question is, if he's on a switched network, no. Not without a topology change. If he can't put a box between the switch and router how likely is it that he's going to be able to put a hub between the switch and router and then attach a box to that? -- Thanks, Josh Paetzel
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