When the ISP block it only by DNS 
Filtering???
I think to block 1 side is a DNS Filtering the 
easyest and fastest way.
Greetings
Xaver
  ----- Original Message ----- 
  
  
  Sent: Tuesday, February 17, 2009 4:50 
  PM
  Subject: Re: [swinog] Post from Canton de 
  Vaud
  
You're assuming that the biggest ISPs will apply the filtering 
  at the entrance of their network, which is not necesseraly true. They can also 
  decide to filter closer to their access equipments. This would mean that 
  peerings with other ISPs or BGP-tiered enterprises would be 
  unfiltered.
Depending where the filtering is applied, professional 
  access could also be prevented to be filtered.
  
  
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