How to comprehend "security principal"?

  • Thread starter Thread starter Leo Zhang
  • Start date Start date
A "Security Principal" is an entity, represented by an object in the
directory, that has the ability to access directory resources such as, data
on drives, printers, objects in the directory itself, etc. Security
Principals are either assigned rights or inherit them.

In Active Directory, there are three recognized Security Principals: Users,
Computers, and Groups. In other directories, you might find that
Organizational Units are Security Principals as well (the subject of intense
debate at times).

-ds
 
Additionally, security principles are referenced by the OS using a SID that
is assigned to the principle.
The SID is a globally unique number that includes the domain SID and a
unique RID (relative identifier)

When a principle authenticates to the domain (only users and computers can
authenticate), it recieves a "token", which is a data structure that
contains, among other things, the SIDs of all the groups to which the
principle is a member.
The principle presents this token to any resource it wishes to access.
 
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