ftp with permission Hierarchy

i want to configure my ftp with below given permission

1. I need to create one user named ' A'.
2. Need to create parent folder named 'A'.
3. Need to create another users named 'B' and 'C'
4. Need to create folders named 'B' and 'C' inside folder 'A'
5. user 'A' should have read-write access to the folder 'A' 'B' and 'C'
6. user 'B' should have read-write access to the folder 'B' only he should not have access to folder 'A' and folder 'C'
7. user 'c' should have read-write access to the folder 'c' only he should not have access to folder 'A' and folder 'B'

How can I do it using any FTP server. We are having global scape FTP server and microsoft IIS 6 , 7 and 7.5 servers. We can use any of thiem

Please suggest.

HershAsked:
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MidnightOneConnect With a Mentor Commented:
REmove Authenticated users from top level folder.

Assign permissions as attached
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HershAuthor Commented:
any update?
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arnoldCommented:

Create a virtual directory within FTP for each user B and c that points to the location within A. This will limit each user while A will have the rights to both.
This way when the FTP user logs in, it will match the virtual directory and will be settled there.

FTP service
default ftp site
   usera d:\somepath\somedir\A\
   userb d:\somepath\somedir\A\userb
   userc d:\somepath\somedir\A\userc
   
What will control is the security settings on the directory
userb and userc subdirectory will inherit the A and each will have the respective user with modify rights in the least and full rights at the most.

You could use deny read/write on A but then you would have to sever the child inherits from parent for the sub directories since deny is enforced first.
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HershAuthor Commented:
thanks
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