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Second Security, Stability, and Resiliency (SSR2) Review Team Draft Report

Open Date: 24 January 2020 Close Date: 4 March 2020
Originating Organization: SSR2 Review Team via Multistakeholder Strategy and Strategic Initiatives (MSSI)
Categories/Tags: Reviews/Improvements, Accountability/Transparency
Brief Overview:

This Public Comment proceeding is on behalf of the second Security, Stability, and Resiliency Review Team (SSR2).

The SSR2 Review Team seeks to solicit input on its draft report. The report contains findings and recommendations in four key areas:

  • Implementation and impact of recommendations from the first SSR review.
  • Key stability issues within ICANN.
  • Security, stability, and resilience of the Domain Name System (DNS).
  • Future challenges.
Link: https://www.icann.org/public-comments/ssr2-rt-draft-report-2020-01-24-en

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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."