[solved] FTP Firewall Problem. INetGet() is OK, IExplore.exe fails.

[Exit]

I'm using my FTP server as software update server. This is realized with the INetGet() function and works very well.

Now I wanted to distribute the software by sending the URL to the customers instead of a ZIP file.

Unfortunately, this method works only, if the "Windows firewall" is disabled on my server.

I have opened port 20 and 21, but no luck.

This is a little script to demonstrate the behavior.

$FTPname = "ftp://autoit@anonym.dyndns.org/AutoItTest.txt" ; altered to a non exsistend address
$LOCname = @TempDir & "\~AutoIt.txt"
$RC = InetGet($FTPname, $LOCname, 1)
If $RC = 0 Then Exit MsgBox(0, "FTP Test", "Server is down. Try later.", 30)
ShellExecuteWait($LOCname) ; browse the text file.
FileDelete($LOCname)
ShellExecuteWait("iexplore.exe", $FTPname)

Just let it run and you will see, that IEXPLORE.EXE will get a time out.

Belive me or not: If I disable the firewall, the browser shows the result like INETGET.

What can I define in my firewall to allow the browser to get the file?

TIA forumer100

Edited August 16, 2009 by forumer100

[Exit]

The browser tried to switch to passive mode and if sucessfull, the windows firewall refused the random ports.

The solution was to disable PASV in my FTP server.