Working with file type definitions
Use the page to create and manage up to 32 file types (groups of file extensions) that can be explicitly blocked in category filters (see Managing traffic based on file type).
Important: Custom file types and custom additions to predefined types are used in extension-based enforcement, but not true file type analysis. See Enforcement based on file
extension and Enforcement based on file analysis for more information.
- Click on a file type to see the file extensions associated with that type.
- To add extensions to the selected file type, click Add Extension, and then see Adding file extensions to a file type for further instructions.
- To create a new file type, click Add File Type, and then see Adding custom file types for further instructions.
- To delete a custom file type or extension, select an item, and then click Delete.
You cannot delete pre-defined file types, or delete the file extensions associated with them.
You can, however, add file extensions associated with a pre-defined file type to a custom file type. The file extension is then filtered and logged according to the settings associated with the custom file type. You cannot add the same extension to multiple custom file types.
When you are finished making changes to file type definitions, click OK. Changes are not implemented until you click Save and Deploy.