You can follow the steps below to access FTP, FTPS, SFTP using localtonet:

  1. Install Localtonet App: Complete the installation steps tailored for your operating system. Downloads
  2. Set Up Your AuthToken: Navigate within the Localtonet app and select the provided AuthToken.
  3. Initialize the Tunnel: Proceed to the TCP-UDP Page, select TCP Protocol Type, determine the Server, and specify the listening IP and Port values (Standard Port 22 for FTP, FTPS, SFTP). Subsequently, create and activate your tunnel by pressing the Start button from the list.

And that's actually it! No further adjustments should be required at your network or router end. Through these steps, you can easily FTP, FTPS, SFTP using Localtonet. 

There is another safer and much easier way to do this. Using the FileServer Tunnel on Localtonet. You can review this Blog about using FileServer Tunnel with Localtonet.