aang. FTP-server

Har en synology diskstation DS-101j og vil gerne lave en ftp-server.
Diskstation har ip-adr.: 192.168.x.x
Diskstation sidder på en router.
Gjort som de skriver her:
If your Disk Station is using a private IP and the router with public IP, please follow steps below to connect to DS-101.

Enter the management UI of DS-101 and go to Service page to enable FTP service.
Setup the DMZ of the router from public IP to private IP. (You may find the DMZ on the “admin page” of your router.)
Open Microsoft Internet Explorer, and enter ftp://Router IP in the address field. (You can also connect to DS-101 in the office by entering ftp://DS-101 IP.)
Users can then access DS-101 through the Internet.

Note: FTP Ports of DS-101: 20 and 21.

Skal jeg gøre noget ved porte i router ?
Hvad skal jeg skriver i et ftp-program for at se min diskstation?
Bruger totalcommander´s ftp-program.