How to remove the "File Transfer" Tab to prevent users from downloading files when accessing the environment through the NetScaler Gateway.

If you want to remove the "File Transfer Tab" from the full VPN gateway, you can create a custom portal theme and remove this option.

Once the portal theme is created using any of the default templates you can edit "Look and Feel" portion an deselect "Show File Transfer Tab"--- this will subsequently deselect "Show Enterprise File Shares Section and Show Personal File Shares Section"