The reason for this is because many firewalls do not allow incoming connections to the site, but do allow users to establish outgoing connections. A passive data connection is established by the client to the server, whereas the default is for the server to establish the connection to the client, which firewalls may object to. Of course, you now may have problems with sites whose primitive FTP servers do not support passive mode.
Martin, -- Martin Marconcini | UNIX, MS-DOS and Windows ... | (also known as the Good, the bad and the | ugly..) -----Original Message----- From: Daniel de los Reyes [mailto:[EMAIL PROTECTED] Sent: Monday, March 12, 2001 5:14 PM To: Martin Marconcini Cc: Lista de Debian-User Subject: What is Passive mode anyway? Can somebody explain what Passive mode is, so maybe I can understand my way out of this? El Mon, Mar 12, 2001 at 05:09:42PM -0300, Martin Marconcini dijo: -| 1) Indeed you can't do it on Internet Explorer as far as I know. -| 2) I believe that no matter which client you will be using, if you wish to -| use an ftp server and pass through a firewall, you will have to enable -| passive mode on every client. -| -| Best Regards, -| -| -- -| Martin Marconcini | UNIX, MS-DOS and Windows ... -| | (also known as the Good, the bad and the -| | ugly..) -| -| -----Original Message----- -| From: Daniel de los Reyes [mailto:[EMAIL PROTECTED] -| Sent: Monday, March 12, 2001 5:07 PM -| To: Martin Marconcini -| Cc: Lista de Debian-User -| Subject: Re: ProFTP server not serving win clients!! -| -| -| El Mon, Mar 12, 2001 at 04:39:02PM -0300, Martin Marconcini dijo: -| -| You probably need to enable PASSIVE Mode on the Windows FTP CLient. -| -| -| -| That will make it. -| -| -| -| 1. I can't find a way to do this in Internet Explorer. -| 2. Isn't there any other way? I can't tell everybody to enable PASSIVE -| mode... -| -| -| -| -| -| Regards, -| -| -| -| -- -| -| Martin Marconcini | UNIX, MS-DOS and Windows ... -| -| | (also known as the Good, the bad and the -| -| | ugly..) -| -| -| -| -| -| -| -| -----Original Message----- -| -| From: Daniel de los Reyes [mailto:[EMAIL PROTECTED] -| -| Sent: Monday, March 12, 2001 4:11 PM -| -| To: Lista de Debian-User -| -| Subject: ProFTP server not serving win clients!! -| -| -| -| -| -| I have set a ProFTP server running on port 2100. It is perfectly -| accesible -| -| from any Linux ftp client, even from browsers as Mozilla or Konqueror. -| -| The strange thing is that it can be accesed from clients running on -| windoze. -| -| Thy get the error: -| -| -| -| An error hapened when openning the folder in the FTP server.Check your -| -| access permissions to this folder. -| -| Details: -| -| 200 Type set to A -| -| 500 Illegal PORT Command -| -| -| -| What is all this about? -| -| -- -| -| ______________________________ -| -| Daniel de los Reyes -| -| S2-Selling Soluciones -| -| Valencia Spain -| -| e-mail: [EMAIL PROTECTED] -| -| Powered by Debian GNU-Linux 2.2r2 -| -| ______________________________ -| -| -| -| -| -| -- -| -| To UNSUBSCRIBE, email to [EMAIL PROTECTED] -| -| with a subject of "unsubscribe". Trouble? Contact -| -| [EMAIL PROTECTED] -| -| -| -| -- -| ______________________________ -| Daniel de los Reyes -| S2-Selling Soluciones -| Valencia Spain -| e-mail: [EMAIL PROTECTED] -| Powered by Debian GNU-Linux 2.2r2 -| ______________________________ -| -- ______________________________ Daniel de los Reyes S2-Selling Soluciones Valencia Spain e-mail: [EMAIL PROTECTED] Powered by Debian GNU-Linux 2.2r2 ______________________________