25 Extensible Provisioning Protocol (EPP)

Prototypical answer:

25-1 EPP

TWNIC has begun to adopt EPP protocol for .tw TLD domain name registration since January 2004, and provide Chinese domain name registration since April 2005. Recently, RFC 5910 Domain Name System (DNS) Security Mapping for the EPP is also implemented. TWNIC is experienced in using EPP.

25-1-1 EPP Interface

.政府registry will provide both production and OT&E EPP servers for registrars, which include production domain name registration and management functions. Another independent test environment for registrars is to do R&D and testing. Figure 25-1 (Q25_attachment) shows .政府registry’s EPP structure.

EPP includes three major category functions (Table 25-1 EPP function, Q25_attachment):

The main features of the EPP implementation are:
- EPP is flexible to extend because it is based on XML.
- The UTF8 encoding allows EPP to be used for multi-lingual data collection.
- EPP uses Transaction Layer Security for data encryption during data transfer. There is no data leakage issue.
- Registry and registrar use the same interface (open standard) to communicate and reduce the complexity of the system.

A typical EPP session will be started by a hello command. After server responds a greeting, client must send out a login command for authentication. When the authentication completes, it means an EPP session is established, and client can send out query commands until the logout command is received. Figure 25-2 and 25-3 (Q25_attachment) show the typical EPP session between EPP client and EPP server.

25-1-2 Comply with RFCs and Specifications

The registry-registrar model is described and embodied in a number of IETF RFCs, ICANN contracts and practices, and registry-registrar agreements. As shown in Table 25-1, EPP is defined by the core set of RFCs that standardize the interface that registrars use to provision domains with the SRS. As a core component of the SRS architecture, the implementation is fully compliant with all EPP RFCs such as 3735, 3915, 5730-5734 and 5910 (Table 25-2 Comply with RFCs and Specifications, Q25_attachment).

25-2 Proprietary EPP Extensions

The .政府 registry will implement two proprietary EPP extensions for IDN and registry gateway functions, the extension will be implemented in compliance with all RFC specifications including RFC 3735 (Table 25-3 Proprietary EPP Extensions, Q25_attachment).

- IDN extension 〈EPP Schema〉 such as shown in Figure 25-4 (Q25_attachment)
- Registry gateway extension 〈EPP Schema〉 such as shown in Figure 25-5 (Q25_attachment)

25-3 Resourcing Plans

TWNIC supports all the necessary resources indicated in the New gTLD Applicant Guidebook and Registry Agreement. The following resources will be provided by TWNIC to support the .政府 TLD operation (Table 25-4 Resourcing Plans, Q25_attachment).

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