Two-Person Control Administration: Preventing Administration Faults Through Duplication

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Executive Summary

Modern computing systems are complex and difficult to administer, making them more prone to system administration faults. Faults can occur simply due to mistakes in the process of administering a complex system. These mistakes can make the system insecure or unavailable. Faults can also occur due to a malicious act of the system administrator. Systems provide little protection against system administrators who install a backdoor or otherwise hide their actions. To prevent these types of system administration faults, the authors created ISE-T (I See Everything Twice), a system that applies the two-person control model to system administration. ISE-T requires two separate system administrators to perform each administration task. ISE-T then compares the results of the two administrators' actions for equivalence.

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