draft-ietf-dnsop-bad-dns-res-02.txt

bind 9.3结合mysql数据库

      recursive name server should periodically check the performance of
      all of a zone's name servers to adjust its determination of the
      best-performing one.































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3. IANA considerations

   There are no new IANA considerations introduced by this
   Internet-Draft.















































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4. Security considerations

   Name server and resolver misbehaviors identical or similar to those
   discussed in this document expose the root and TLD name servers to
   increased risk of both intentional and unintentional denial of
   service.

   We believe that implementation of the recommendations offered in this
   document will reduce the amount of unnecessary traffic seen at root
   and TLD name servers, thus reducing the opportunity for an attacker
   to use such queries to his or her advantage.








































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5. Internationalization considerations

   We do not believe this document introduces any new
   internationalization considerations to the DNS protocol
   specification.














































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Normative References

   [1]  Bradner, S., "Key words for use in RFCs to Indicate Requirement
        Levels", BCP 14, RFC 2119, March 1997.

   [2]  Mockapetris, P., "Domain names - concepts and facilities", STD
        13, RFC 1034, November 1987.

   [3]  Mockapetris, P., "Domain names - implementation and
        specification", STD 13, RFC 1035, November 1987.

   [4]  Elz, R. and R. Bush, "Clarifications to the DNS Specification",
        RFC 2181, July 1997.

   [5]  Andrews, M., "Negative Caching of DNS Queries (DNS NCACHE)", RFC
        2308, March 1998.

   [6]  Vixie, P., Thomson, S., Rekhter, Y. and J. Bound, "Dynamic
        Updates in the Domain Name System (DNS UPDATE)", RFC 2136, April
        1997.

   [7]  Rekhter, Y., Moskowitz, R., Karrenberg, D., Groot, G. and E.
        Lear, "Address Allocation for Private Internets", BCP 5, RFC
        1918, February 1996.

   [8]  <http://www.as112.net>


Authors' Addresses

   Matt Larson
   VeriSign, Inc.
   21345 Ridgetop Circle
   Dulles, VA  20166-6503
   USA

   EMail: [e-mail]


   Piet Barber
   VeriSign, Inc.
   21345 Ridgetop Circle
   Dulles, VA  20166-6503
   USA

   EMail: [e-mail]





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Intellectual Property Statement

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   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
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Acknowledgement

   Funding for the RFC Editor function is currently provided by the
   Internet Society.











































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