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ICANN Announces Membership of Security Committee

At its November 2001 meeting, the ICANN Board directed the ICANN President to appoint a President's standing committee on the security and stability of the Internet's naming and address allocation systems (also known as the "Security Committee"). In February 2002, Dr. Steve Crocker was appointed chair of the Committee and at its March 2002 meeting, the Board approved the charter for the committee.

The membership of the Security Committee is now complete. The following individuals have graciously agreed to serve as members of the committee in addition to Dr. Crocker as Chair:

  • Alain Aina (Consultant)
  • Jaap Akkerhuis (SIDN)
  • Doug Barton (Yahoo!)
  • Steve Bellovin (ATT)
  • Rob Blokzijl (RIPE)
  • David Conrad (Nominum)
  • Steve Crocker (Consultant), Chair
  • Daniel Karrenberg (RIPE-NCC)
  • Mark Kosters (VeriSign)
  • Allison Mankin (ISI)
  • Ram Mohan (Afilias)
  • Russ Mundy (Network Associates Laboratories)
  • Jun Murai (Keio University)
  • Frederico Neves (registro.br)
  • Ray Plzak (ARIN)
  • Doron Shikmoni (ForeScout, ISOC-IL)
  • Ken Silva (VeriSign)
  • Bruce Tonkin (Melbourne IT)
  • Paul Vixie (ISC)
  • Rick Wesson (Alice's Registry)

Stuart Lynn, President of ICANN, noted that this is an "international committee of people who are experts in Internet security standards and operations. The ICANN and Internet community will undoubtedly benefit from their counsel and insight."


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Domain Name System
Internationalized Domain Name ,IDN,"IDNs are domain names that include characters used in the local representation of languages that are not written with the twenty-six letters of the basic Latin alphabet ""a-z"". An IDN can contain Latin letters with diacritical marks, as required by many European languages, or may consist of characters from non-Latin scripts such as Arabic or Chinese. Many languages also use other types of digits than the European ""0-9"". The basic Latin alphabet together with the European-Arabic digits are, for the purpose of domain names, termed ""ASCII characters"" (ASCII = American Standard Code for Information Interchange). These are also included in the broader range of ""Unicode characters"" that provides the basis for IDNs. The ""hostname rule"" requires that all domain names of the type under consideration here are stored in the DNS using only the ASCII characters listed above, with the one further addition of the hyphen ""-"". The Unicode form of an IDN therefore requires special encoding before it is entered into the DNS. The following terminology is used when distinguishing between these forms: A domain name consists of a series of ""labels"" (separated by ""dots""). The ASCII form of an IDN label is termed an ""A-label"". All operations defined in the DNS protocol use A-labels exclusively. The Unicode form, which a user expects to be displayed, is termed a ""U-label"". The difference may be illustrated with the Hindi word for ""test"" — परीका — appearing here as a U-label would (in the Devanagari script). A special form of ""ASCII compatible encoding"" (abbreviated ACE) is applied to this to produce the corresponding A-label: xn--11b5bs1di. A domain name that only includes ASCII letters, digits, and hyphens is termed an ""LDH label"". Although the definitions of A-labels and LDH-labels overlap, a name consisting exclusively of LDH labels, such as""icann.org"" is not an IDN."