Restricting File Names

For security reasons you may want to create a set of rules for the working environment where many users have access to a central resource, such as files and folders in FileCloud Server. In this case, you may want to make sure that certain files are not available.

To restrict names of files that can be uploaded:

  1. In the admin portal, go to Settings > Misc > General.
  2. Add the file names to the Disallowed File Names field. 
    Separate multiple names with |

    Files matching or including any term entered are not uploaded. If you do not specify an extension, files matching or including the term and any extension are not uploaded.


To understand how to create a list of file names, use the examples below.

(warning) If you leave an empty space in your list:

  • In the User Portal, all files are blocked from being uploaded.
  • The Sync client does not check for restricted names.


(warning) If you add an extension to the file name, then only the combination of name + extension is restricted.

(lightbulb)  To manage file extensions ONLY, you can either create a list of file extensions to restrict, or create a list of file extensions to allow.  See Manage File Extensions for instructions.

ExampleDescriptionImpact on Uploading Files
attack | threat.exe |

Restrict any file from being uploaded if it contains any of the 3 strings in the file name:

  • attack
  • threat.exe
  • empty

The following files cannot be uploaded by users:

  • *attack*.*
  • *threat.exe
  • Any file

The following files can be uploaded by users:

  • No files can be uploaded until the empty delimiter is removed.
attack | threat.exe

Restrict any file from being uploaded if it contains any of the 2 strings in the file name:

  • attack
  • threat.exe

The following files cannot be uploaded by users:

  • *attack*.*
  • *threat.exe

The following files can be uploaded by users:

  • Any file not containing attack
  • Any file not containing threat.exe
  • threat.* (where * is NOT .exe)