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Definition Edit

A guard is

[a] processor that provides a filter between two disparate systems operating at different security levels or between a user terminal and a data base to filter out data that the user is not authorized to access.[1]

References Edit

  1. Department of Defense, National Computer Security Center, Glossary of Computer Security Terms (NCSC-TG-004, Ver. 1) (Oct. 21, 1988).

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