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Division 3.2 CCN/CSI SERVICE DEFINITION AND CHARACTERISTICS

Original text. Later amendments are not shown.

The Common Communication Network / Common System Interface is a tool for exchange of tax information between the National Administrations in the field of Taxation and Anti-Fraud. The main characteristics of the CCN/CSI system infrastructure are listed hereafter:

Table 5

Characteristics of the services provided by CCN/CSI

TRANS-EUROPEANCCN/CSI offers a global WAN access to Service Requesters through a number of Points of Presence (PoP) in every Member State, acceding countries and the Kingdom of Norway. The CCN/CSI network backbone offers the required capacity and resilience to provide the Service Requesters with a high availability rate.
MULTI-PLATFORMAllows the interoperability between heterogeneous platforms (Windows, Linux, Solaris, AIX, HPUX, SVR4, IBM MVS, etc.) through a highly portable communication stack (CSI) installed on standard national Application Platforms.
MULTI-PROTOCOL

Supports various protocols and exchange paradigms:

  • CSI protocol supporting asynchronous and synchronous (request/response) communication paradigms (CCN/CSI channel);

  • HTTP/S protocol for interactive access to CCN Intranet services (CCN Intranet channel);

  • POP, IMAP, SMTP protocols for the exchange of e-mail between NA users but also between applications (CCN Mail III channel).

SECURE

Information exchanges over the CCN/CSI network are protected to ensure optimal confidentiality and data integrity. Security services include:

  • Site-to-site IPSec256-bits encryption and protection against unwanted accesses enforced by Firewall/encryption devices deployed at every CCN/CSI site;

  • Access control mechanisms (authentication, authorisation, accounting) at site level enforced at CCN Gateway and supported by local administration tools (ADM3G);

  • Session-level security enforced by message-level encryption (CSI secure), SSL v.3 mutual authentication and encryption (HTTPS), POP-S and IMAP-S (secure e-mail transport).

MANAGED

The CCN/CSI infrastructure also provides Service Requesters with managed services including:

  • Central Monitoring;

  • Event logging;

  • Production of statistics on CSI and CCN Mail III message exchanges (size, number of messages, matrix) and statistics on CCN gateways and CCN Mail III;

  • User management (ADM3G) and directory services;

  • CSI stacks validation;

  • Portal services:

    • CCN Portal: on-line access to statistics, on-line remote API proxies (RAP) management;

    • ITSM Portal: on-line Newsletter, on-line documentation and CSI stack packages, CCN Frequently Asked Questions (FAQ);

  • ACT (Application Configuration Tool);

  • Services calls tracking and on-line support.

Notes on Attachment

Footnotes

f1

OJ L 195, 1.8.2018, p. 3.