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�������պ����ѧ ������ʵ������ϵͳ�����ص�ʵ����, ���� 100191
Computer network defense policy model
Xia Chunhe, Wei Yudi, Li Xiaojian, He Wei*
State Key Laboratory of Virtual Reality Technology and System, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

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ժҪ Ŀǰ�������������о���ȱ���߲�������ϸ���IJ��Խ�ģ����,����ڷ���Or-BACģ��(Organization Based Access Control model)�Ļ�����,���������������Ϊ���г���,��������������������ģ��(CNDPM,Computer Network Defense Policy Model).��ģ�ͶԱ�����������Ӧ�Ȳ��Խ���ͳһ��ģ,�������ɫ����ͼ����Զ�����ķ���,����߷����Ч��,ͬʱ�����˲��Ե�������Ƶ�����,��ϸ��Ϊ����ķ�������.�������˲��Ե��걸�ԡ���Ч�Ժ�һ���Ե���ʽ������������.ʵ����������,��ģ�ͱ�ʾ�ļ���������������,�ܹ���Ч��ת��Ϊ��������,���нϺõ�ʵ���Ժ���չ��.
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Abstract�� Recent research on computer network defense is lack of a method which is able to model policy in high level and refine policy conveniently, hence computer network defense policy model (CNDPM) was presented to abstract network defense control behavior on the basis of organization based access control model (Or-BAC). The CNDPM provides a common method to model protection, detection and response policy, and introduces automatic assignment mechanism of role as well as view and activity to improve efficiency, also provides derivation principles to refine policy to concrete defense rule. Moreover, completeness, validity and consistency of policy are studied through formal analysis. The example shows that computer network defense policies modeled by CNDPM can be refined to defense rules conveniently and efficiently. The CNDPM model is characterized by good expansibility and practicability.
Keywords�� computer network defense (CND)   policy   PPDR model   refinement     
Received 2007-09-06;

��������ίԱ�Ṳ����Ŀ����ƻ�����������Ŀ(JD100060517); ����863�ƻ�������Ŀ(2007AA01Z407)

About author: �Ĵ���(1965-),��,���պ�����,����,xch@buaa.edu.cn.
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Xia Chunhe, Wei Yudi, Li Xiaojian, He Wei.Computer network defense policy model[J]  JOURNAL OF BEIJING UNIVERSITY OF AERONAUTICS AND A, 2008,V34(8): 925-929
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