Date: Mon, 1 Jul 2002 13:09:36 -0700 From: Ryan Grove <ryan@wonko.com> To: "Raja Velu" <raja@micronetusa.com> Cc: freebsd-questions@freebsd.org Subject: Re: Browser-based FTP access as part of a web page Message-ID: <200207011309.36946.ryan@wonko.com> In-Reply-To: <003f01c22115$195313e0$1d00a8c0@www.micronetusa.com> References: <003f01c22115$195313e0$1d00a8c0@www.micronetusa.com>
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On Monday 01 July 2002 08:36 am, Raja Velu wrote: *snip* > When the firewall is enabled, this frame comes up with a "No page to > display" error. I look at my "security" logs and I see communication > going on between BSD:21 and the web browser. However, all of a sudden, I > see that the web browser is trying to access some arbitrary port on the > BSD box (like 49254 etc.), which is being denied (obviously, as I have > opened up only the necessary ports). And the page returns an error. > > When I just type the FTP URL on the web browser, it works fine. It is not > working THROUGH this web page only. With the firewall open, it works fine > as none of the ports are protected. This sounds like the browser is trying to open a passive FTP session. Since the FTP server is behind a firewall, this will fail. I know that at least Internet Explorer has an option (buried deep in the advanced preferences) to turn off passive FTP, but I'm not sure about other browsers. This website has a good description of how passive FTP works: http://slacksite.com/other/ftp.html In addition, (and I hate to advertise, but it just might help you out) I wrote a GPL'ed PHP-based program called NotFTP that's extremely easy to get running and provides a web<->FTP gateway. It gives you the option to use passive or active FTP connections. You just might be able to modify it to suit your needs (or maybe you can use it without modifying it). You can find it at http://wonko.com/notftp/ Hope that helps. -- Ryan Grove ryan@wonko.com http://wonko.com/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the messagehelp
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