Thank you, Comcast.
cma at cmadams.net
Fri Feb 26 17:42:15 UTC 2016
Once upon a time, Brielle Bruns <bruns at 2mbit.com> said:
> 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. Connection tracking sorta makes it
> stateful to a point, but it can get ugly with enough traffic.
Sending queries from port 53 has been considered bad behavior and
deprecated for what, 15 years now?
Chris Adams <cma at cmadams.net>
More information about the NANOG