From owner-freebsd-hackers@FreeBSD.ORG Wed Nov 24 22:46:14 2004 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 491BE16A4CF for ; Wed, 24 Nov 2004 22:46:14 +0000 (GMT) Received: from wolf.bytecraft.au.com (wolf.bytecraft.au.com [203.39.118.1]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7A2AB43D45 for ; Wed, 24 Nov 2004 22:46:12 +0000 (GMT) (envelope-from MTaylor@bytecraft.com.au) Received: from localhost (localhost [127.0.0.1])iAOMk1Im018172; Thu, 25 Nov 2004 09:46:01 +1100 (EST) (envelope-from MTaylor@bytecraft.com.au) Received: from wolf.bytecraft.au.com ([127.0.0.1]) by localhost (wolf.bytecraft.au.com [127.0.0.1]) (amavisd-new, port 10024) with LMTP id 17755-03; Thu, 25 Nov 2004 09:46:00 +1100 (EST) Received: from svmarshal.bytecraft.au.com ([10.0.0.4])iAOMjpAP018149; Thu, 25 Nov 2004 09:45:52 +1100 (EST) (envelope-from MTaylor@bytecraft.com.au) Received: from svmailmel.bytecraft.internal (Not Verified[10.0.0.24]) by svmarshal.bytecraft.au.com with MailMarshal (v5,0,3,78) id ; Thu, 25 Nov 2004 09:45:51 +1100 Received: from [10.0.17.42] ([10.0.17.42]) by svmailmel.bytecraft.internal with Microsoft SMTPSVC(6.0.3790.211); Thu, 25 Nov 2004 09:43:04 +1100 From: Murray Taylor To: "Haulmark, Chris" In-Reply-To: <6FC9F9894A9F8C49A722CF9F2132FC22027656CC@ms05.mailstreet2003.net> References: <6FC9F9894A9F8C49A722CF9F2132FC22027656CC@ms05.mailstreet2003.net> Content-Type: text/plain Organization: Bytecraft Systems Message-Id: <1101336350.40202.147.camel@wstaylorm.dand06.au.bytecraft.au.com> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Thu, 25 Nov 2004 09:45:51 +1100 Content-Transfer-Encoding: 7bit X-OriginalArrivalTime: 24 Nov 2004 22:43:04.0865 (UTC) FILETIME=[F6040910:01C4D276] cc: freebsd-hackers@freebsd.org cc: simon.roberts@earthlink.net Subject: RE: Network monitoring X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 24 Nov 2004 22:46:14 -0000 On Thu, 2004-11-25 at 08:27, Haulmark, Chris wrote: > Someone broke the silence: > > > I apologize that this probably isn't the most relevant > > list to ask this on. Suggestions for better lists will be welcome. > > > > I'm trying to monitor traffice on a 100BaseT ethernet > > network link. I split the line, put a "hub" in and am > > trying to run tcpdump on a box off the side of the > > hub. > > > > Unfortunately, it turns out the hub isn't a hub, it's > > a "switching hub" (what's not a switch about this? I > > don't get it). Consequently, all I see are arp > > packets, bootp packets, and the odd broadcast. I went > > to a local store to buy a hub, and guess what, they > > sold me another switching hub, so that has to be > > returned :( > > > > So, the question is, can anyone tell me the > > manufacturer and product name of a real (dumb) hub? I > > could use 10baseT instead if necessary, I just need > > something cheap that is a simple repeater. Of course, > > nobody advertizes "our hub really is a totally dumb > > hub, not like those fancy switching hubs the > > competition sells" ;> > > > > Any suggestions? > > > > I ran into the similar problem. I just looked elsewhere for a cheap hub. Ebay was the favorite place for me. For you, just swing by a Pop/Mom/Family kind of computer stores. They might sell few old hubs that doesn't have switching capabilities at a low price. > > Chris Haulmark > > > Thanks > > Simon > > > > Would this work for you 1 - install a second NIC in the BSD box 2 - configure it as a bridge with no IP numbers on the NICs (Ahm jist sittin' 'ere, passin' stuff thru!) 3 - tcpdump -i fxp0 or tcpdump -i fxp1 as appropriate A NIC is easier to get than a dumb hub these days ... -- Murray Taylor Special Projects Engineer --------------------------------- Bytecraft Systems & Entertainment P: +61 3 8710 2555 F: +61 3 8710 2599 D: +61 3 9238 4275 M: +61 417 319 256 E: murraytaylor@bytecraftsystems.com or visit us on the web http://www.bytecraftsystems.com http://www.bytecraftentertainment.com --------------------------------------------------------------- The information transmitted in this e-mail is for the exclusive use of the intended addressee and may contain confidential and/or privileged material. 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