February 2003
Intermediate to advanced
560 pages
23h 11m
English
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Windows NT/2000/XP ACLs
Unix and Windows have different security models, and Windows NT/2000/XP has a security model that is different from Windows 95/98/Me. One area in which this is readily apparent is file protections. On Unix systems, the method used has traditionally been the 9-bit “user, group, other” system, in which read, write, and execute bits can be set separately for the owner of the file, the groups to which the owner belongs, and everyone else, respectively.
Windows 95/98/Me has a file-protection system that is essentially no protection at all. This family of operating systems was developed from MS-DOS, which was implemented as a non-networked, single-user system. Multiuser security simply was never added. One apparent exception to this is user-level security for shared files, which we will discuss in Chapter 9. Here, separate access permissions can be assigned to individual network client users or groups. However, user-level security on Windows 95/98/Me systems requires a Windows NT/2000 or Samba server to perform the actual authentication.
On Windows NT/2000/XP, user-level security is an extension of the native file security model, which involves access control lists (ACLs). This system is somewhat more extensive than the Unix security model, allowing the access rights on individual files to be set separately for any number of individual users and/or any number of arbitrary groups of users. Figure 8-3, Figure 8-4, and Figure 8-5 show the dialog boxes on a Windows ...
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