You set this with the Allow access IP and Write access IP options in the FTP settings of the share.
which is only possible if you know the IP adresses.
For remote file access this is not an option.
Could you implement an FTP client with the requested feature?
Has there been any news since September?
Regards,
Manuel Koch
Sorry to say this was not addressed for the new release of 3.11. Most of our focus has been completing the developments of our new NAS R-3 products and I am not sure if this specific function will be available as well in the first few updates. If your request is immediate for purchase orders then please contact our sale person for your area as we are having many large orders coming in for special requests.