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how do i forward to filezila server from outside the network?

i have an external Driver with internal IP which i would like to connect to it with Filezila server which install on IP

i logged to the filezila server and i set user and share folder to the external driver which on ip

in the router i configure to forward port 21 to but when i am connecting through FZ client its not success to connect to FZ server

"Status:      Connection established, waiting for welcome message...
Error:      Could not connect to server"

but when i am changing in the router the port forwading from to its success to establish connection to the external driver but NOT through the FZ server

what should i have to change in the setting in order that FTP will done through FZ server

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3 Solutions
also forward port 20
Is there a firewall or ACL that may be blocking the traffic?
gvilbisAuthor Commented:
i added port 20 and open windows firewall to port 20 and 21 and its success to connect but it disconnecting after few sec

      230 Logged on
Status:      Connected
Status:      Retrieving directory listing...
Command:      PWD
Response:      257 "/" is current directory.
Command:      TYPE I
Response:      200 Type set to I
Command:      PASV
Response:      227 Entering Passive Mode (199,27,203,74,211,2)
Command:      MLSD
Response:      425 Can't open data connection.
Error:      Failed to retrieve directory listing
gvilbisAuthor Commented:
maybe because it pasive mode?

(000003)8/27/2012 0:55:20 AM - (not logged in) (> Connected, sending welcome message...
(000003)8/27/2012 0:55:20 AM - (not logged in) (> 220 Hi you accessing Gamma server
(000003)8/27/2012 0:55:20 AM - (not logged in) (> USER vlada
(000003)8/27/2012 0:55:20 AM - (not logged in) (> 331 Password required for vlada
(000003)8/27/2012 0:55:21 AM - (not logged in) (> PASS *********
(000003)8/27/2012 0:55:21 AM - vlada (> 230 Logged on
(000003)8/27/2012 0:55:21 AM - vlada (> PWD
(000003)8/27/2012 0:55:21 AM - vlada (> 257 "/" is current directory.
(000003)8/27/2012 0:55:21 AM - vlada (> TYPE I
(000003)8/27/2012 0:55:21 AM - vlada (> 200 Type set to I
(000003)8/27/2012 0:55:21 AM - vlada (> PASV
(000003)8/27/2012 0:55:21 AM - vlada (> 227 Entering Passive Mode (192,168,1,132,211,4)
(000003)8/27/2012 0:55:21 AM - vlada (> MLSD
(000003)8/27/2012 0:55:31 AM - vlada (> 425 Can't open data connection.
yes, FTP includes the IP address in the header, so you either need an FTP ALG (Application Layer Gateway) in the router to re-write the header or to use active mode on the filezilla server.

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