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security policy filter

Definition(s):

  A hardware and/or software component that performs one or more of the following functions: content verification to ensure the data type of the submitted content; content inspection to analyze the submitted content and verify that complies with a defined policy; malicious content checker that evaluates the content for malicious code; suspicious activity checker that evaluates or executes the content in a safe manner, such as in a sandbox or detonation chamber and monitors for suspicious activity; or content sanitization, cleansing, and transformation, which modifies the submitted content to comply with a defined policy.
Source(s):
NIST SP 800-53 Rev. 5

  A hardware and/or software component that performs one or more of the following functions: (i) content verification to ensure the data type of the submitted content; (ii) content inspection, analyzing the submitted content to verify it complies with a defined policy (e.g., allowed vs. disallowed file constructs and content portions); (iii) malicious content checker that evaluates the content for malicious code; (iv) suspicious activity checker that evaluates or executes the content in a safe manner, such as in a sandbox/detonation chamber and monitors for suspicious activity; or (v) content sanitization, cleansing, and transformation, which modifies the submitted content to comply with a defined policy.
Source(s):
NIST SP 800-53 Rev. 4 [Superseded] under Security Policy Filter