Ports required from DMZ to Internal for File Server (FTP)

We are implementing an FTP server in a DMZ, managed by a Cisco ASA. The server is a member server of the domain. I would like to know what ports need to be opened on the ASA so that users in the internal network can map a drive to the shared FTP root folder. Can anyone please help? Thanks in advance.
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ddnsAuthor Commented:
Thanks for your quick answer and link. But what about LDAP and other ports? Won't these need to be open due to the fact the server is participating in a domain? Thanks again...
you can try opening the ports one by one cause i m sure you dont want any extra ports opened...

LDAP use TCP port 389 for client communications and TCP port 636 for secure client communication ( SSL )

if you are using exchange on the same server you may find an error or you wont cause they both work on same port..
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Here's the answer from Microsoft:

oh its a member server then you wont need to open LDAP ports... sorry for last port...
TCP port 389 for client communications
TCP port 636 for SSL communications
TCP port 3268 for communications to Global Catalog server
TCP port 3269 for SSL communications to Global Catalog server
yeh dont open LDAP ports its member server just open the ports for FTP
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Networking Protocols

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