[168794] in North American Network Operators' Group
Re: BCP38 [Was: Re: TWC (AS11351) blocking all NTP?]
daemon@ATHENA.MIT.EDU (Livingood, Jason)
Tue Feb 4 19:35:46 2014
From: "Livingood, Jason" <Jason_Livingood@cable.comcast.com>
To: North American Network Operators' Group <nanog@nanog.org>
Date: Wed, 5 Feb 2014 00:31:58 +0000
In-Reply-To: <m21tzilbms.wl%randy@psg.com>
Errors-To: nanog-bounces+nanog.discuss=bloom-picayune.mit.edu@nanog.org
>>Can somebody explain to me why those who run eyeball networks are able
>> to block outbound packets when the customer hasn't paid their bill,
>> but can't seem to block packets that shouldn't be coming from that
>> cablemodem?
>
>i suspect the non-payment case is solved at a layer below three
In a DOCSIS network the source address verification (as Tony said) is
typically done on the CMTS IIRC. Turning a customer off for non-payment is
done in an accounts management / billing system.
While I am sure continuing to agree with each other that spoofing is bad,
we lack actionable data. ;-) As I said in another thread, I think someone
/ some group needs to invest to collect actual data and share the results
openly.=20
So any volunteers out there? I=B9m sure there are lots of ways to underwrit=
e
independent research on the subject (contact me off-list).
Jason
=20
