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FISMA Implementation Project FISMA

Government-wide Overlay Submissions

Government-wide category consists of overlay submissions from federal, state, tribal, and local governments. 

Select from overlays listed below for more information and to access the overlay.


Overlay Name


Technology or System

Closed Isolated Network


This overlay was developed by US Army Europe. A Closed Isolated Network is defined as a data communications enclave that operates in a single security domain, implements a security policy administered by a single authority, does not connect to any other network and has a single, common, continuous security perimeter.

POC Michael Naya





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Disclaimer Statement The National Institute of Standards and Technology (NIST) has established the Security Overlay Repository as a public service. Security control overlays are made available by NIST on an “AS IS” basis with NO WARRANTIES   Some submitted overlays may be available for free while others may be made available for a fee.  It is the responsibility of the User to comply with the Terms of Use of any given overlay. Overlay users are solely responsible for determining the appropriateness of using and distributing the security control overlays.  User assumes all risks associated with their use, including but not limited to compliance with applicable laws; damage to or loss of data, programs or equipment; and the unavailability or interruption of operation. NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT AND DATA ACCURACY

Created November 30, 2016, Updated December 03, 2020