Skip site navigation (1)Skip section navigation (2)
Date:      Mon, 11 Dec 2000 01:15:35 -0500 (EST)
From:      Mitch Collinsworth <mitch@ccmr.cornell.edu>
To:        freebsd-security@FreeBSD.ORG
Subject:   Re: DHCP beats MAC Address
Message-ID:  <Pine.LNX.4.10.10012110112110.16586-100000@opal.ccmr.cornell.edu>
In-Reply-To: <20001211005915.D9158@pir.net>

next in thread | previous in thread | raw e-mail | index | archive | help
On Mon, 11 Dec 2000, Peter Radcliffe wrote:

> Jeremiah Gowdy <data@irev.net> 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.

Well like you said you haven't seen the @home setup.  Jeremiah's
description matches my experience with @home.  You can use multiple
systems (i.e. mac addresses) without resetting the cable modem, but
you have to re-use the account #.

-Mitch



To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-security" in the body of the message




Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?Pine.LNX.4.10.10012110112110.16586-100000>