TWC (AS11351) blocking all NTP?

William Herrin bill at
Tue Feb 4 19:28:22 UTC 2014

On Tue, Feb 4, 2014 at 2:08 PM, Doug Barton <dougb at> wrote:
> On 02/04/2014 08:04 AM, William Herrin wrote:
>> If just three of the transit-free networks rewrote their peering
>> contracts such that there was a $10k per day penalty for sending
>> packets with source addresses the peer should reasonably have known
>> were forged, this problem would go away in a matter of weeks.
> Won't work because no one will sign that contract.

Hi Doug,

Verizon Business is willing to do settlement-free peering with you but
you won't agree to a reciprocal penalty if either allows its customers
to forge packets? I call that a weed-out factor. Weed out the bad
actors because anyone else would consider that peering arrangement too
valuable to pass up.

Bill Herrin

William D. Herrin ................ herrin at  bill at
3005 Crane Dr. ...................... Web: <>
Falls Church, VA 22042-3004

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