356141
Descrição
Mapa Mental por Craig Parker, atualizado more than 1 year ago
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Criado por Craig Parker
aproximadamente 11 anos atrás
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U3. Labels & Access Control
- Information may only flow from an entity with a particular
security label to an entity with at least the same label
- Low level subject may not read up
- high level subject may not write down
- Principles of Bell-LaPladula
- Principles of Bell-LaPladula
- high level subject may not write down
- Low level subject may not read up
- Protection Rings
- Different subjects & Objects given
different numbers (labels)
- OS enforces control of the layers being accessed
- OS controls outer layers accessing inner layers
- All done in a controlled manner
- All done in a controlled manner
- OS controls outer layers accessing inner layers
- OS enforces control of the layers being accessed
- Figure shows lowest number as most important
- Different subjects & Objects given
different numbers (labels)
- VSTa Microkernel
- Needs work??
- Needs work??
- Bell-LaPladula
- Based on a confidentiality policy
- When a subject reads and object,
info flows from Object to Subject
- When writing to an object, info
flows from Subject to Object
- Can write up or on your level, but cant read up
- Can write on your level and read
down, but cant write down
- Based on a confidentiality policy
Anexos de mídia
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