nanog mailing list archives

Re: Thank you, Comcast.


From: "Roland Dobbins" <rdobbins () arbor net>
Date: Sat, 27 Feb 2016 00:25:01 +0700

On 27 Feb 2016, at 0:16, Brielle Bruns wrote:

UDP is a fun protocol - stateless, so blocking a DST of 53/UDP to the customer also will block responses to recursive queries that originate from SRC 53/UDP.

Which are relatively rare, these days. Any device doing this by default is likely running out-of-date software that is abusable in multiple ways.

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Roland Dobbins <rdobbins () arbor net>


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