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 Tuesday, July 31, 2007

To aid in choosing a good DNSBL, Swa Frantzen proposes at the SANS Internet Storm Center several tips and tricks in gauging which blacklists are effective. Presented as well are several criteria that must be considered by the blacklist administrators. Among the criteria they suggest are:

  • Speed of reaction
  • Selection criteria
  • Goal of the blacklist
  • Ease of getting unlisted
  • Working Email contact to get unlisted
  • Out of band contact details
  • Blocking for the right reasons
  • Duration of a block
  • Automatic delisting
  • Granularity of the block
  • Security of the blacklist provider
  • Extortion
  • Warning to those getting listed

To read the full article, click here.