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North American Network Operators Group

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Re: blocking unallocated subnets

  • From: Jon Lewis
  • Date: Fri Dec 02 14:54:31 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                |
_________ http://www.lewis.org/~jlewis/pgp for PGP public key_________




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