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NetApp Knowledge Base

How does Access Based Enumeration (ABE) work?

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Category:
ontap-9
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nas
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Applies to

  • ONTAP 9
  • Data ONTAP 8 7-Mode

Answer

  • When access-based enumeration (ABE) is enabled on a CIFS share, users who do not have permission to access a shared folder or file underneath it (whether through individual or group permission restrictions), do not see that shared resource displayed in their environment.
ABE does not hide the share, it only hides the folders/files created under it, based on the access permissions.​​
  • Local administrators still have unrestricted enumeration
  • Members of the BUILTIN\Administrators group are granted unrestricted access to the local system
  • Thus, an account in this group would be able to enumerate the entire directory
  • By default, ABE is disabled
  • Enabling ABE
    • For Data ONTAP 8 7-Mode
      • cifs shares -change sharename -accessbasedenum
    • For Data ONTAP 9
      • ::> cifs share properties add -vserver <vserver> -share-name <share> -share-properties access-based-enumeration
  • Disabling ABE
    • For Data ONTAP 8 7-Mode
      • cifs shares -change sharename -noaccessbasedenum
    • For Data ONTAP 9
      • ::> cifs share properties remove -vserver <vserver> -share-name <share> -share-properties access-based-enumeration

Additional Information

 

 

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