I have an iMac where I would like to access the files remotely on my iPhone. I downloaded an app called 'FE File Explorer' and it works well as long as I am connected to my local WiFi network. It does not work when I am not connected to my WiFi network. Looks like File Explorer is connecting to my mac using SMB. I am not sure how to get this working... Do I need to allow port forwarding on my router? I tried to add some ports I found online to my router for port forwarding, but that did not work. I tried the ports for SFTP (20 and 21), HTTP (80), 135, 136, 137, and 445. Does anyone know how to get this working?