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Technical Engagement Training Course Catalog

If you are interested in having the Technical Engagement team deliver any of the courses from our catalog below, or would like more information, please contact us.

Course Code Course Course Details
TE01 ICANN's Technical Mission TE01-Content
TE02 DNS101 TE02-Content
TE03 DNSSEC101 TE03-Content
TE04 Advanced DNS TE04-Content
TE05 Advanced DNSSEC TE05-Content
TE06 Registry Operations for ccTLDs TE06-Content
TE07 OSINT: Fighting DNS Abuse (DNS Abuse for LEAs) TE07-Content
TE08 DNS Abuse: Threats and Mitigation TE08-Content
TE09 Introduction to RDAP for Domain Names Registrations TE09-Content
TE10 DNS Ecosystem Security TE10-Content
TE11 DNS for Internet Service Providers TE11-Content
TE12 Network Operation Security TE12-Content
TE13 UA: Email Address Internationalization (EAI) TE13-Content
TE14 UA: Universal Acceptance for Java Developers TE14-Content
TE15 Credential Management Lifecycle: Operational Best Practices TE15-Content
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"""" is not an IDN."