NTFS permissions for getting started with Windows Server R2 2

NTFS Permissions Overview:

In the office or other environment, some files stored on the computer often need to be read access by many people, in order to prevent someone from tampering with the file, the computer program's developers designed "file access", only assigned the modified permission, the visitor can modify its contents Only visitors who are assigned Read permissions are able to read their contents only. These permissions are assigned to a user account or group account, and the permissions assigned to the group account are automatically assigned to the members of the group, reducing the number of allocations.

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NTFS Permissions: users can access their resources after they have been assigned the correct access rights, and set permissions to prevent tampering and deletion of resources.

1. File System:

The file system is the method of organizing files on an external storage device ; common file systems: FAT, NTFS, EXT

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2 , NTFS File system features

NTFS (New Technology file system), which is the filesystem of the WINDOWSNT environment. The new technology file system is the Windows NT family (for example, Windows 2000, Windows XP, Windows Vista, Windows 7, and Windows 8.1) such as the limited-level dedicated file system (the file system where the drive letter of the operating system must be formatted as NTFS file system, 4096 cluster environment). NTFS replaces the old FAT file system.

NTFS has made several improvements to fat and HPFS, such as supporting metadata and using advanced data structures to improve performance, reliability, and disk space utilization, and to provide several additional extensibility features. The detailed definition of the file system is a trade secret and Microsoft has registered it as an intellectual property product.

NTFS Features:

ü Support size : NTFS can support partitions (called volumes if using dynamic disks) can be up to 2TB in size. The maximum size of the FAT32 support partition in Windows2000 is 32GB.

ü File System : NTFS is a recoverable file system. Users rarely need to run disk hotfixes on NTFS partitions. NTFS guarantees partition consistency by using standard transaction log and recovery techniques. NTFS uses log files and checkpoint information to automatically recover file system consistency when a system failure event occurs.

ü folder compression : NTFS supports compression of partitions, folders, and files. Any Windows-based application that reads and writes compressed files on an NTFS partition does not need to be decompressed by another program, and when the file is read, the file is automatically decompressed, and the file is automatically compressed when it is closed or saved.

ü efficient management of disk space:NTFS uses smaller clusters to manage disk space more efficiently. In the case of the FAT32 file system of Win 2000, the size of the cluster is 4KB when the partition size is 2GB~8GB, the size of the cluster is 8KB when the partition size is 8GB~16GB, and the cluster size is 16KB when the partition size is 16GB~32GB. While the NTFS file system of Win 2000, when the size of the partition is below 2GB, the cluster size is smaller than the corresponding FAT32 cluster, and when the partition size is above 2GB (2GB~2TB), the cluster size is 4KB. By contrast, NTFS can manage disk space more efficiently than FAT32, minimizing wasted disk space.

ü Better security : On NTFS partitions, you can set access permissions for shared resources, folders, and files. Licensing settings include two things: what groups or users are allowed to access folders, files, and shared resources, and what level of access the group or user who has access permissions can have. The settings for access permissions apply not only to users on the local computer, but also to network users who access files through shared folders on the network. Security is much higher than access to folders or files under the FAT32 file system

ü More features : NTFS supports disk quotas, NTFS uses a "change" log to track changes that occur in a record file.

3 , set file permissions :

file Permissions : Users can read, write and other access control, common file operation permissions.

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4 , Operations permissions for common folders

Lists the file names within the folder, creates and deletes files within the folder, and so on.

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5 , NTFS Partitioning of permissions: Granular partitioning of NTFS permissions

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6 , NTFS Permission rules:

L Accumulation of permissions : The user's effective permissions are the cumulative sum of all rights assigned to the user

Note: the user's effective permissions on a resource are the sum of the permissions assigned to the user and the individual group permissions that the user belongs to.

L deny permission : In the Access control list, deny permission is the highest priority

Note: in the Access control list, the Deny permission is the highest priority, and in the case of conflict, the Deny permission takes precedence.

L Inherit permissions : The access control list for a folder is inherited by its subfolders and files

Note: forced inheritance is enforced at the upper level, and de-inheritance operates under subordinate files

L Special privileges:

? Read permission : Allows the user to read the Access control List

? Change Permissions : Allow the user to change the access control list

? Take ownership : The user can become its owner

Due to time issues, relevant examples will continue to be updated in this article, please pay attention in real time.

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NTFS permissions for getting started with Windows Server R2 2