An example application of the trusted network interpretation

The National Computer Security Center has issued guidance for trusted computer networks called the Trusted Network Interpretation (TNI) of the Trusted Computer System Evaluation Criteria (TCSEC). The TNI provides requirements for trusted computer networks that extend the guidance provided for traditional stand-alone computer systems by the TCSEC. It is expected that this Department of Defense (DOD) technical security guidance will be used as the basis for certification of DOD network system acquisitions. The author presents three major steps illustrating an application of the TNI. The steps are: formulating a TNI view; determining the appropriate TNI security requirements that will apply; and formulation of a network security architecture based on the allocation of the determined security requirements