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  • The type of users who will be directly or indirectly accessing the system.

  • The type of data, including classification levels, compartments, and categories, that are processed on the system.

  • The type of levels of users, their need to know, and formal access approvals that the users will have.



DEDICATED SECURITY MODE

In this mode of operation, all users must have:

  • Signed NDA for ''ALL'' information on the system.

  • Proper clearance for ''ALL'' information on the system.

  • Formal access approval for ''ALL'' information on the system.

  • A valid Need To Know for ''ALL'' information on the system.


All users can access ''ALL'' data.


SYSTEM HIGH SECURITY MODE

In this mode of operation, all users must have have:

  • Signed NDA for ''ALL'' information on the system.

  • Proper clearance for ''ALL'' information on the system.

  • Formal access approval for ''ALL'' information on the system.

  • A valid Need To Know for ''SOME'' information on the system.


All users can access ''SOME'' data, based on their Need To Know .


COMPARTMENTED SECURITY MODE

In this mode of operation, all users must have have:

  • Signed NDA for ''ALL'' information on the system.

  • Proper clearance for ''ALL'' information on the system.

  • Formal access approval for ''SOME'' information they will access on the system.

  • A valid Need To Know for ''SOME'' information on the system.


All users can access ''SOME'' data, based on their Need To Know and formal access approval.


MULTILEVEL SECURITY MODE

In this mode of operation, all users must have have:

  • Signed NDA for ''ALL'' information on the system.

  • Proper clearance for ''SOME'' information on the system.

  • Formal access approval for ''SOME'' information on the system.

  • A valid Need To Know for ''SOME'' information on the system.


All users can access ''SOME'' data, based on their Need To Know , clearance and formal access approval.


SEE ALSO



REFERENCES

  • Krutz, Ronald L. and Vines, Russell Dean, The CISSP Prep Guide; Gold Edition, Wiley Publishing, Inc., Indianapolis, Indiana, 2003.