blocking unallocated subnets

Jon Lewis jlewis at lewis.org
Fri Dec 2 19:53:25 UTC 2005


On Fri, 2 Dec 2005, John S. Bucy wrote:

> I work for a large email provider and we've run into trouble
> delivering mail to certain sites after bringing up new servers in a
> recently allocated subnet of 72/8.  Apparently, some folks decided it
> would be a good policy to protect their nameservers from ddos attacks
> to silently drop requests from unallocated subnets.  So they obtained
> a list of subnets at some point in the past, deployed it and then
> never updated it.

Welcome to 2002.  Have a look at http://69box.atlantic.net/

----------------------------------------------------------------------
  Jon Lewis                   |  I route
  Senior Network Engineer     |  therefore you are
  Atlantic Net                |
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