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System interconnection

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Definition Edit

System interconnection is

the direct connection of two or more IT systems for the purpose of sharing data and other information resources.[1]

Overview Edit

A system interconnection has three basic components: two IT systems (System A and System B) and the mechanism by which they are joined (the “pipe” through which data is made available, exchanged, or passed one-way only).


Interconnection life cycle Edit

The four phases of the interconnection life cycle are:

  • Planning the interconnection: the participating organizations perform preliminary activities; examine all relevant technical, security, and administrative issues; and form an agreement governing the management, operation, and use of the interconnection.
  • Establishing the interconnection: the organizations develop and execute a plan for establishing the interconnection, including implementing or configuring appropriate security controls.
  • Maintaining the interconnection: the organizations actively maintain the interconnection after it is established to ensure that it operates properly and securely.
  • Disconnecting the interconnection: one or both organizations may choose to terminate the interconnection. The termination should be conducted in a planned manner to avoid disrupting the other party’s system. In response to an emergency, however, one or both organizations may decide to terminate the interconnection immediately.

References Edit

  1. NIST Special Publication 800-47, at D-2.

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