The table below details how a rule will be apply to the current object and child objects based on the flags set in the access rule. Specifies that the ACE is not propagated to child objects. Specifies that no inheritance flags are set. This includes both container and leaf child objects. Specifies that the ACE is propagated only to child objects. Setting this flag to InheritOnly will cause the access rule to only apply to child objects of the container. See the table below for more detail on the three Propagation Flag options. In addtion to Inheritance Flags we can also set Propagation Flags. Propagate to child containers (directories).ĭo not propagate this permission to any child containers or objects. This indicates that we want our permission to be propagated to all child directories and files. You will most likely want to set both the ContainerInheritance and the ObjectInheritance flags. When creating access rules we will want to specify inheritance flags also. Remember, we haven’t changed anything on the filesystem yet. PS C:\Users\larntz\Documents> $acl.SetOwner($owner) PS C:\Users\larntz\Documents> $owner = New-Object ("BUILTIN\Administrators") We can only set the owner to the user currently running PowerShell or BUILTIN\Administrators.We need to be running powershell as Administrator.However, there are two limitations when setting ownership via PowerShell. This method takes one argument of type so first we need to create an object of that type and then we can set the owner. We will use the SetOwner() method on the ACL. Setting the owner in the ACL is almost as simple as viewing it. Once we’ve made the desired changes we have to apply it back to the directory or our changes will be lost. Now that we have our ACl object we can make modifications. \Directory\Īnother option would be to create a completely new, and empty, ACL object like this: PS C:\Users\larntz\Documents> $acl = New-Object PS C:\Users\larntz\Documents> $acl = Get-Acl. To do that we’ll just assing the output of Get-Acl to $acl. The easiest way to do that is to save the current ACL in a variable and then modify it. IdentityReference : WIN-UBFNHEQ8GII\Administratorīefore we can set an object’s ACL we need to build one. IdentityReference : BUILTIN\Administrators InheritanceFlags : ContainerInherit, ObjectInherit These latter two will be important when we start modifying rules. Now we can see which permissions were inherited and the InheritanceFlags and PropagationFlags. We can see a more detailed description of the access rules by selecting them specifically using this command (Get-Acl. Ownership is assigned to one user or group and there are no additional details. We can see from this example that WIN-UBFNHEQ8GII\Administrator is the owner and we have three Access rules granting FullControl. Our primary focus in this article will be on the Owner and Access objects. WIN-UBFNHEQ8GII\Administrator Allow FullControl Path : \FileSystem::C:\Users\Administrator\Documents\Directory\Īccess : NT AUTHORITY\SYSTEM Allow FullControl Running it in PowerShell will give the following output. We are going to use the Get-Acl cmdlet to view the current ACL. Everything here will work in Windows PowerShell 5, but not PowerShell 6 as of this writing – specifically, the SetAccessControl() method does not exist in PowerShell 6. When changing ownership of files or folders you must run PowerShell as an Administrator. This article should help you understand everything you need to know to manipulate security permissions with PowerShell. Changing NTFS Security Permissions using PowerShell Written byĬhanging NTFS permissions with PowerShell saves a lot of time when you need to make changes to a large group of files or when it is required as part of a larger automation project.
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