External drive (WD40000A4NC) remote access


I have this external drive (WD40000A4NC).

In my offices’ network I have one static ip, with some port forwards enabled.

I can access folders through windows (\ip) and administration area from my offices’ lan but from my home I can’t access drives’ folders.

Open ports: 21 (ftp), 443 (https), 445, 8082 (http)

Do I have to open new port?

Thank you

Port 21 should be enough

Log into the netadmin to change the FTP port number

Check this article 

Thank you for your answer, but I don’t think you understand correctly what I want.

I don’t want to access the drive through FTP, but through windows folder by typing \ip_of_drive

Thank you