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Showing posts with label Operating System Classification. Show all posts
Showing posts with label Operating System Classification. Show all posts

Saturday, January 21, 2012

OS CLASSIFICATION


1.  We keep using so many OS's around in office,at home...some times windows...or a flavour of linux..UBUNTU..or the latest i touched upon was the upgraded BOSS..but was not aware that even OS have a classification.The classification is defined by Trusted Computer System Evaluation Criteria (TCSEC), a United States Government Department of Defense (DoD) standard that sets basic requirements for assessing the effectiveness of computer security controls built into a computer system. 

2.  TCSEC classifies any OS under 4 categories :

- D
- C
- B
- A 

3.  Few more things about the classication in point wise form :

- A has the highest security. 
- C, B and A are further classified as : C1, C2, B1, B2, B3 and A1.
- D defines Minimal protection
- C1 — Discretionary Security Protection
- C2 — Controlled Access Protection
- B1 — Labeled Security Protection
- B2 — Structured Protection
- B3 — Security Domains
- A1 — Verified Design

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