[45372] in North American Network Operators' Group
Re: SlashDot: "Comcast Gunning for NAT Users"
daemon@ATHENA.MIT.EDU (Daniel Senie)
Thu Jan 31 17:41:57 2002
Message-Id: <5.1.0.14.2.20020131172620.04022cc0@mail.amaranth.net>
Date: Thu, 31 Jan 2002 17:36:07 -0500
To: nanog@merit.edu
From: Daniel Senie <dts@senie.com>
In-Reply-To: <20020131220240.GB22554@puck.nether.net>
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At 05:02 PM 1/31/02, Jared Mauch wrote:
> how to identify non-host based devices:
>
> 1) check out mac-address ranges
Many of the small boxes will spoof the MAC address of the PC behind them.
They do this so that cable modem companies who track mac addresses don't
need to be called to tell them.
Of course you then have Linksys which makes both a NAT-box and LAN cards.
So the MAC ranges are likely intermixed. On Cisco's, you can easily program
any MAC address you want.
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Daniel Senie dts@senie.com
Amaranth Networks Inc. http://www.amaranth.com
