xamp and filezilla ftp

I have an installation of FileZilla up and running on my windows 7 64 bit system
The server is running fine and I can log into it using web and ftp clients
I have set up users with relevant shares pointing to my mapped drives on the computer
These shares are on a Buffalo NAS box
These mapped drives are completely accessible for file copy and downloading using the windows interface (explorer etc), and for all programs needing access to them

The problem is that when I use a ftp client to log into the ftp server, the login works fine but the folders in the share are not visible at all
If I use the C Drive on the local computer as a share then all folders are visible

Can someone please explain what is going on please
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I presume that the filzilla server runs as a service, under a service account.

I think that the mapped drives are not visible to the service user, or (if you use UNC path - \\NAS-BOX\... instead of Z:\...) the service user has insufficient rights to access the NAS.

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doctorbillTechAuthor Commented:
I am using the following mapped drive from the buffalo:
If you inspect the filezilla process with task manager: What user is running it ?

Have you tried to give an UNC path for the file share ?
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doctorbillTechAuthor Commented:
In filezilla you can only select drives / folders already mapped
You cannot add a folder using a UNC path
doctorbillTechAuthor Commented:
maybe I should add the filezilla  ftp logon user name to the Buffalo as a share user ?
I don't know if that helps, because one of the nice things in Filezilla is the fact that it doesn't rely on Windows users for its own user account stuff - to be precise, it gives a sh** on Windows user accounts - you can define them as needed w/o defining any of them in Windows and vice versa.

On the other side, it uses Windows' security scheme when storing its files on network shares. Tha implies that it connects to the buffalo with the account credentials it runs with (which might be a local service account).

Have you tried to look into the logs on the buffalo NAS ?
There should be traces of an unknown user trying to connect.

If you know the credentials (because Filezilla runs under a normal account credentials), the add that user to the Buffalos share users. If Filezilla runs as SYSTEM of some auto-created account, then change that behaviour.

Nevertheless I'm not sure if the mapped drives are visible to all users (which would be a security breach). If not, you could possibly put some NET USE command(s) into the registry of that user at HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run (OF THE USER UNDER WHICH FILZILLA RUNS).
doctorbillTechAuthor Commented:
I tried adding the windows users to the buffalo interface but still no joy
Any chance to inspect the security logs on the buffalo ?

Maybe it tells sth. like "Failed logon of user (...)"
doctorbillTechAuthor Commented:
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