The End-To-End Internet (was Re: Blocking MX query)

Cutler James R james.cutler at
Wed Sep 5 22:21:09 UTC 2012

On Sep 5, 2012, at 5:12 PM, Izaac <izaac at> wrote:
>    Since tcp25 filtering has been so successful, we should deploy
>   filters for everything except tcp80 and tcp443 and maaaybe tcp21 --
>   but NAT already does so much to enhance the user experience there
>   already.  And what with ISP customers using their provided DNS and
>   mail service exclusively, there's no reason to permit udp53, tcp110,
>   tcp143, tcp993, tcp995 either.  Really, only evil people use anything
>   but the web.  Any other traffic undoubtedly a bot from which they
>   ought to be protected.


You do realize that that the NANOG mailing is archived and some helpful person will quote you to their favorite legislator?

James R. Cutler
james.cutler at

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