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Practical_modern_SCADA_protocols_-_dnp3,_60870-5_and_Related_Systems

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UCA protocol 373<br />

An excellent reference for security issues (not specific to <strong>SCADA</strong>) can be found in<br />

‘Practices for securing Critical Information Assets’, published by the Critical Infrastructure<br />

Assurance Office. (http://www.iwar.org.uk/cip/resources/prac.pdf) contains useful<br />

reference material including security audit procedures.<br />

14.4 Summary<br />

The preceding discussion introduces the three foundations of UCA technology: a uniform<br />

communications infrastructure, a uniform application interface, <strong>and</strong> a uniform data<br />

model. These three elements combine to accomplish UCA’s goal of vendor <strong>and</strong> platform<br />

independence.<br />

UCA technology has self-configuration functions built in. This is a key advantage<br />

of UCA over other integration options. New UCA devices automatically integrate themselves<br />

into the UCA system when they are connected to the network.<br />

The end result of implementing UCA is to eliminate much of the effort currently<br />

required to integrate utility systems. This results in a true productivity increase for all<br />

parties, <strong>and</strong> equally benefits utilities, vendors, integrators <strong>and</strong> consultants. Eliminating<br />

effort leads to much more open access to information, reduces costs for everyone, <strong>and</strong><br />

allows everyone to focus on adding value to the information.<br />

Reference<br />

‘UCATM: From Inception to International St<strong>and</strong>ard’ a paper presented at IMTECH 2000,<br />

Seattle, April 2000, by Eric Von Sacken, Manager of <strong>Systems</strong> Development, Colorado<br />

Springs Utilities, Colorado Springs, CO <strong>and</strong> W. Fredrick Riddle, Senior Consultant, EMA<br />

Inc. St. Paul, MN.

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