nanog mailing list archives

Re: TWC (AS11351) blocking all NTP?


From: "Livingood, Jason" <Jason_Livingood () cable comcast com>
Date: Mon, 3 Feb 2014 15:07:56 +0000

On 2/3/14, 1:02 AM, "Dobbins, Roland" <rdobbins () arbor net> wrote:

All that broadband access operators need to do is to a) enforce
antispoofing as close to their customers as possible,

Many probably do so already. But as well all know, it only takes a few
that donĀ¹t to create a large scale issue. IMHO if we want to change this
we need to (1) measure where and how anti-spoofing is not implemented, (2)
contact networks that have not implemented with recommendations on how to
do so (a la bcp38.info), and (3) failing reasonable response to #2 to
start a public running list of networks that have inadequate levels of
anti-spoofing (according to some reasonable standard, and probably more
nuanced than a binary result).

Jason



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