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FOREWORD The Trusted Product Evaluation Questionnaire is the latest in a series of technical documents that are being published by the National Computer Security Center under the Technical Guidelines Programs. It is the goal of the Technical Guidelines Program to assure that each process in the Trusted Product Evaluation Program and the features of the Department of Defense Trusted Computer Systems Evaluation Criteria will be discussed in detail and provide the proper interpretations with specific guidance. These publications are designed to provide insight to the Department of Defense Trusted Computer Systems Evaluation Criteria requirements for the computer security vendor and developer, as well as the technical evaluator. The specific questions in the Trusted Product Evaluation Questionnaire provide a set of good practices related to necessary system security and system security documentation. This questionnaire has been written to help the vendor understand what technical information is required concerning the system for a product evaluation. From the vendor's responses, the evaluator may obtain an understanding of the security of the system applying for evaluation. As the Director, National Computer Security Center, I invite your recommendations for revision to this technical guideline. We plan to review this document when the need arises