From owner-freebsd-security Sun Aug 22 14: 9:35 1999 Delivered-To: freebsd-security@freebsd.org Received: from florence.pavilion.net (florence.pavilion.net [194.242.128.25]) by hub.freebsd.org (Postfix) with ESMTP id 97E2A15581 for ; Sun, 22 Aug 1999 14:09:27 -0700 (PDT) (envelope-from joe@florence.pavilion.net) Received: (from joe@localhost) by florence.pavilion.net (8.9.3/8.8.8) id WAA70914; Sun, 22 Aug 1999 22:08:32 +0100 (BST) (envelope-from joe) Date: Sun, 22 Aug 1999 22:08:32 +0100 From: Josef Karthauser To: Bigby Findrake Cc: jay d , "Rodney W. Grimes" , Evren Yurtesen , freebsd-security@FreeBSD.ORG Subject: Re: multiple machines in the same network Message-ID: <19990822220832.A70149@pavilion.net> References: <19990820192825.15974.rocketmail@web601.yahoomail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: ; from Bigby Findrake on Fri, Aug 20, 1999 at 12:46:28PM -0700 X-NCC-RegID: uk.pavilion Organisation: Pavilion Internet plc, 24 The Old Steine, Brighton, BN1 1EL, England Phone: +44-845-333-5000 Fax: +44-845-333-5001 Mobile: +44-403-596893 Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Fri, Aug 20, 1999 at 12:46:28PM -0700, Bigby Findrake wrote: > On Fri, 20 Aug 1999, jay d wrote: > > > What you really want is a VLAN capable switch. VLAN switches simply > > designate what ports on a switch can see what other ports on the same > > switch. I have to correct you though, Rodney, as sniffing is currently > > possible through switches. > > Please, do tell us how it's possible to sniff through switches. A switch only switches when it knows how where the destination mac addresses live. Most switches only have a fixed size table of mac addresses, so if you could somehow flood this table with bogus entries the switch would broadcast packets to destinations that it can't locate. The rest is an exercise for the reader, (although not on _my_ network please ;) Joe -- Josef Karthauser FreeBSD: How many times have you booted today? Technical Manager Viagra for your server (http://www.uk.freebsd.org) Pavilion Internet plc. [joe@pavilion.net, joe@uk.freebsd.org, joe@tao.org.uk] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message