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One key point of the DGSA is showing that absolute protection is maintained
as additional systems are added to the Virtual Secure Network. The
authors address several areas which are in need of further research
to achieve this goal.
One of the questions they pose is what procedures need to be followed
to assure the tester/certifier that the security policy which is
supposed to be in force is the one being carried out. Another area of
interest is whether it is possible to standardize the expression of
policy so that this expression may be used automatically to generate
parameters or rules for an implementation of the policy.
Furthermore, they talk about how communication between virtual
machines can be implemented and refer to the Java Virtual Machine as