If you can Deny All IP access Your FTP Fileziilla Server and only 1 or more IP Access Your FTP Filezilla Server, Exp 192.168.1.1. So you can do it.
- Setting Account.
- Select the account to be executed.
- Input “*” in the following ip addresses are not allow to connect to the server.
- Input IP Address Access 192.168.1.1 Exclude the followiing IPs from the list of disallowed IPs, thus enabling access again:
- you can configure in below picture.