PROTECTION - The operating system's protection mechanisms        83/08/03

  There are two fundamental object protection mechanisms: access
  control lists (ACLs) and protected subsystems.  By object protection
  mechanisms we mean the ways that objects (files, directories, etc.) can
  be protected, as opposed to the way the operating system protects its
  own integrity.

  "ACLs" are  primarly a way of specifying WHO can access an object (with
  the ordinary type of operations, like read, write, and delete for files).
  Type 'HELP PROTECTION ACLS' for detailed information about ACLs.

  "Protected subsystems" are a way of specifying HOW an object can be
  accessed (in more complicated ways than just read, write, and delete).
  A protected subsystem is a way to guarantee the integrity and/or privacy
  of data.  Type 'HELP PROTECTION PROTECTED_SUBSYSTEMS' for detailed
  information about protected subsystems.


RELATED TOPICS

  More information is available.  Type:

  - HELP PROTECTION ACLS
    for detailed information about ACLs.

  - HELP PROTECTION RIGHTS
    for a summary of protection rights used with ACLs.

  - HELP PROTECTION SIDS
    for a summary of ACL subject identifier (SID) syntax.

  - HELP PROTECTION PROTECTED_SUBS
    for detailed information about protected subsystems.