Downloading to your pc from a share

Hi Stephan, nice protocol but I have a few questions. I am not an IT man.

On the Duo, under "standard file protocols"
-check box for FTP is checked
-a non-standard port was chosen - xxxx does it matter wich portnumber?
-authentication mode is user
-upload resume is enabled
-passive ports are set to xxxx+1 to xxxx+5 Means just to portnumbers?
-masquerade as is set to the Duo host name. The name of your NAS, right?

Note my duo uses the user security model. What is that?

for each share on the Duo,
-ftp default access is set to read/write
-all other boxes left alone. What boxes?

On the router, TCP ports xxxx to xxxx+5 are forwarded to the Duo The 2 porst I put in the passive ports setting?
ddns is active, so I can use a uri to reach the router. uri means Uri Keller :)

In FileZilla's site manager This is the next step. First the NAS settings. But ma-be you can explain some other lines beneath here.
(general tab)
-host is to the ddns uri
-port is set to xxxx
-protocol is set to ftp
-encryption is set to require explicit FTP over TLS
-Logon type is normal
-user password set to my NAS credentials
(transfer settings tab)
-transfer mode is default.

This works for on my home network and over the internet (FileZilla automatically handles the masquerade issue).
Note that it would also connect if encryption were set to off, however, I don't do that.