Legacy Environment

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Definitions:

A Custom environment containing older systems or applications that may need to be secured to meet today’s threats, but often use older, less secure communication mechanisms and need to be able to communicate with other systems.
Sources:
NIST SP 800-70 Rev. 4

Glossary Comments

Comments about specific definitions should be sent to the authors of the linked Source publication. For NIST publications, an email is usually found within the document.

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See NISTIR 7298 Rev. 3 for additional details.