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My Unix World

不要迷恋Unix,Unix只是计算世界很小的一部分!

 
 
 

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Linux Security Sturcture on user layer  

2008-11-27 14:53:03|  分类: L-D-System |  标签: |举报 |字号 订阅

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1, users and groups
2, file access/management authority disaggregation (Anything is file)
3, person have component right of a file
4, so many users and so many files make up the security system of linux.
The key word is own, that means, somebody have own some authority of something.
Anther key word is disaggregation, a person only have one or some meta authority of something.
It's completely the same as authority of the real world: somebody own something or just a part of something.
 
On the other hand, Windows have a so complex security system which i can't understand, but now I know the AD and other authority policy is just some wrapper of the File Auhority system, the philosophy of windows is the far away from K.I.S.S. , the better.

Be note that, the most important thing for an security system is the security sturcture and policy, the are include computer, principle, law,etc. Which OS you chose is not important, no matter you use windows or Linux, or anything else. If an OS have a back door, it's just a hole in your boat, you can stopple it by some material, but if you don't know how boating and how to make it safe, that's the real bad thing.
So, when somebody agument for which system is more safty, just ignore that.
Unix is OK, windows is OK, Mac OS is OK too, what you need to do is be more familar with it, they are just tools for computing usage.

角色,系统看到的用户或者组,用一个数字表示,数字越小,权限越高。用户或者组,只是应用层面的概念,在系统的角度看,这种东西,称为角色。或者说,user和group是角色的一个alias,以便与我们的生活概念兼容。
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