Wierd Ftp connection problem from client to server

From: vineeta (vineetaa_02_at_indiatimes.com)
Date: 09/16/03


Date: 16 Sep 2003 07:43:09 -0700

Hi All,
  One of my customers is trying to connect via "CuteFTP" to our server
in active mode.(Basically,he turned off "PASV" mode at his end in
cuteftp software)and it comes out with this error:

425: can't build data connection: Address already in use

He is using Windows XP client and connecting to a Free-Bsd
server.Now,the server I have has 2 External IP addresses: X.X.X.129
and X.X.X.133

The wierd part is that he can connect via Active mode of CuteFTP to
X.X.X.133 but not X.X.X.129

I am not sure what this means?

I asked him to give me the output using the debug option of FTP.The
output is:

ftp -d X.X.X.129
Connected to X.X.X.129.
220 xyz.com FTP server (Version 6.00LS) ready.
User (X.X.X.129 :xyz): abc
---> USER abc
331 Password required for abc.
Password:
---> PASS XXXX
230 User abc logged in.
ftp> ls
---> PORT X,Y,Z,A,17,246
200 PORT command successful.
---> NLST
425 Can't build data connection: Address already in use
ftp> bye
---> QUIT
221 Goodbye.

ftp>

Any help would be really appreciated.

Thanks,
Vineeta



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