[olug] Installfest thanks and a question

Brian Wiese bwiese at cotse.com
Wed Jan 9 20:58:43 UTC 2002


Have you tried enabling "passive" mode on your ftp client? 

I've had this problem before, trying to access ftp sites from behind my
firewall.  The way traditional "active" ftp works  is that your client
sends a request to the ftp server (port 21), then the server tries to
initiate a connection on one of the client's ports for the 'data'
transfer.  Since the server (on the internet) initiated this, the firewall
will block it. But if you, as the client initiate the port to transfer the
data on (passive), everything goes fine.

Look for the passive connection option, check it by default.  It console
ftp connection, issue teh command 'pasv' usually or something like that.
:)

http://searchnetworking.techtarget.com/sDefinition/0,,sid7_gci512897,00.html

(first explaination that came up on the google search. :)

On Wed, 09 Jan 2002 12:05:40 +0000
Joe Mastandrea <joem at sarpy.com> wrote:


> WS_FTP to post to her web site.  From the error messages, I'm guessing 
> that the web server she wants is seeing her private address on the 
> "safe" side of the firewall.


-- 
Brian Wiese

-----------
bwiese at cotse.net

"FREEDOM!"  - Braveheart

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