Out of Date Bogon Prefix

Nick Downey ndowney at mediacomcc.com
Wed Aug 6 16:22:23 CDT 2008


That makes sense. I am working on updating our M&P. Thanks.


Nick 

-----Original Message-----
From: Heather Schiller [mailto:heather.schiller at verizonbusiness.com] 
Sent: Wednesday, August 06, 2008 3:13 PM
To: Nick Downey
Cc: nanog at nanog.org
Subject: Re: Out of Date Bogon Prefix



Nick,

   You might want to take a closer look at who is really bogon filtering
you.  Emailing their upstream providers may not be the most effective method
for getting endsites to update their bogon filters.  They don't have to
listen to us when we forward your note on.  We can't force them to accept
traffic from you or update their filters.  As someone else pointed out,
directly contacting the folks who are filtering you may be time consuming
but typically draws the best results.

   I agree with the other comments that if you are going to use a form
letter please provide more details about the IP's you are using and your
ASN.  Please also pass this on to your colleagues Eric and Kevin, who I've
heard from lately :)

  --Heather

~*~*~*~*~*~*~*~*~*~*~*~
  Heather Schiller
  Customer Security
  IP Address Management
  1.800.900.0241
~*~*~*~*~*~*~*~*~*~*~*~

Nick Downey wrote:
> This is an heads-up from the Mediacom Network Operations Center about an
> issue we are seeing. We             
> 
> were recently given an IP scope from ARIN (American Registry for 
> Internet
> Numbers) that still
> 
> exists on older Bogon lists many web providers are currently using.
> 
> 
> A Bogon prefix is a route that should never appear in the Internet routing
> table. A packet routed                                     
> 
> over the public Internet (not including over VPN or other tunnels) 
> should never have a source
> 
> address in a Bogon range. These are commonly found as the source 
> addresses of DDoS attacks.
> 
> 
> The IP scope referenced is a 173.x.x.x. This IP scope was on the Bogon 
> list and was blocked by all
> 
> websites using a Bogon prefix up until February of 2008, when it was 
> released by IANA (Internet
> 
> Assigned Numbers Authority) for public use and an updated Bogon prefix 
> was provided. Mediacom
> 
> customers that are within this IP range are not able to reach a 
> website hosted by many organizations.
> 
> 
> 
>  
> 
> Mediacom is individually requesting that these providers update their 
> Bogon prefix to the most current version
> 
> to resolve this issue immediately. We are requesting assistance from 
> this community to make this issue known and to advise administrators 
> to update to the most current Bogon list.
>  
> We have provided some reference material that many may find helpful in 
> resolving this issue.
> Bogons are defined as Martians (private and reserved addresses defined 
> by <http://www.ietf.org/rfc/rfc1918.txt> RFC 1918 < 
> <http://www.faqs.org/rfcs/rfc1918.html>
> http://www.faqs.org/rfcs/rfc1918.html> and 
> <http://www.ietf.org/rfc/rfc3330.txt> RFC 3330 < 
> <http://www.faqs.org/rfcs/rfc3330.html>
> http://www.faqs.org/rfcs/rfc3330.html>) and netblocks that have not 
> been allocated to a regional internet registry (RIR) by the Internet 
> Assigned Numbers Authority < <http://www.iana.org/> 
> http://www.iana.org/>. IANA maintains a convenient IPv4 summary page < 
> <http://www.iana.org/assignments/ipv4-address-space>
> http://www.iana.org/assignments/ipv4-address-space> listing allocated 
> and reserved netblocks.
>  
> Please help to spread the word.
>  
> Nick Downey
> Director
> Network Operations Center
> Mediacom Communications
> Main (800)308-6715
> Secondary (515)267-1167
> ndowney at mediacomcc.com
>  
>  
>  
> 
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