01-16-2014
Here's a description of active ftp vs passive ftp:
Active FTP vs. Passive FTP, a Definitive Explanation
In active mode the server needs to connect back to the client so the client firewall must allow that. If anyone has tweaked the firewall settings (you could compare the good machine to the bad machine) then that could do it. Hence my suggestion to try switching off that machines firewall.
In passive mode the client makes both stage connections so the firewall on the client won't be involved. Hence my suggestion to try switching into passive mode by the Windows client requesting 'quote pasv'.
As you can tell I'm saying that it looks like a problem on that client if you are sure nothing on the network has changed.
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FTP_PASV(3) 1 FTP_PASV(3)
ftp_pasv - Turns passive mode on or off
SYNOPSIS
bool ftp_pasv (resource $ftp_stream, bool $pasv)
DESCRIPTION
ftp_pasv(3) turns on or off passive mode. In passive mode, data connections are initiated by the client, rather than by the server. It may
be needed if the client is behind firewall.
Please note that ftp_pasv(3) can only be called after a successfull login or otherwise it will fail.
PARAMETERS
o $ftp_stream
- The link identifier of the FTP connection.
o $pasv
- If TRUE, the passive mode is turned on, else it's turned off.
RETURN VALUES
Returns TRUE on success or FALSE on failure.
EXAMPLES
Example #1
ftp_pasv(3) example
<?php
$file = 'somefile.txt';
$remote_file = 'readme.txt';
// set up basic connection
$conn_id = ftp_connect($ftp_server);
// login with username and password
$login_result = ftp_login($conn_id, $ftp_user_name, $ftp_user_pass);
// turn passive mode on
ftp_pasv($conn_id, true);
// upload a file
if (ftp_put($conn_id, $remote_file, $file, FTP_ASCII)) {
echo "successfully uploaded $file
";
} else {
echo "There was a problem while uploading $file
";
}
// close the connection
ftp_close($conn_id);
?>
PHP Documentation Group FTP_PASV(3)