From owner-freebsd-security Sun Dec 10 21:59:19 2000 From owner-freebsd-security@FreeBSD.ORG Sun Dec 10 21:59:17 2000 Return-Path: Delivered-To: freebsd-security@freebsd.org Received: from moek.pir.net (moek.pir.net [209.192.237.190]) by hub.freebsd.org (Postfix) with ESMTP id 4435F37B400 for ; Sun, 10 Dec 2000 21:59:17 -0800 (PST) Received: from pir by moek.pir.net with local (Exim) id 145LzY-0004Du-00 for freebsd-security@FreeBSD.ORG; Mon, 11 Dec 2000 00:59:16 -0500 Date: Mon, 11 Dec 2000 00:59:15 -0500 From: Peter Radcliffe To: freebsd-security@FreeBSD.ORG Subject: Re: DHCP beats MAC Address Message-ID: <20001211005915.D9158@pir.net> Reply-To: freebsd-security@freebsd.org Mail-Followup-To: freebsd-security@FreeBSD.ORG References: <01ee01c0632a$bdffad40$9214a8c0@plasmo> <001801c06334$3bcfd7a0$cc02a8c0@columbia.mentis.org> <001201c06336$aecd5550$aa240018@cx443070b> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <001201c06336$aecd5550$aa240018@cx443070b>; from data@irev.net on Sun, Dec 10, 2000 at 09:53:26PM -0800 X-fish: < X-Copy-On-Listmail: Please do NOT Cc: me on list mail. Sender: owner-freebsd-security@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Jeremiah Gowdy probably said: > Indeed, the cable modem does remember your MAC address, HOWEVER, rather than > resetting it, if you use DHCP, and you're using one of the services like > @Home that has an account number for the address, like CX13245125-A, then > the second computer to DHCP with the account number gets the address without Every cable modem I've seen in the US, although I have not seen the @home ones, filters on MAC addresses and only allows N through (where N is normally one or you pay for more). The cable modem lets through the first N MAC addresses it sees. In this case you have no choice but to reset the modem or change the MAC address. This has been hashed through on several FreeBSD lists before. P. -- pir pir@pir.net pir@net.tufts.edu To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-security" in the body of the message