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Security Linux News for Jan 21, 2001

  • Securing DNS with Transaction Signatures (Jan 21, 2001, 17:42)
    "The DNS works on a question-answer model. If a client needs information from the DNS it sends a question to a DNS server and the server returns an answer. Until recently it was only possible for a server to examine a question and determine whether or not to answer it based on the IP address the question originated from. This is not ideal."