Jdownloads really needs captcha

Friday, 03 June 2011

Jdownloads really needs captcha, in the last few weeks my download page
has been hit by bots that are downloading every one of my 100+
downloads. I have disabled the ability to download all simultaneously
(no checkboxes) each download occurs within a very short space of time
of the previous and all from, the same IP address. This happens
regularly and I have to ban the IP addresses because the bots return in
a week or two. My bandwidth is being used up by these bots.

I do not have registration enabled on my site for downloaders as the
registration function is dedicated to another function. Turning on
registration for downloads is not an option for me.

I have tried to implemement Cedric Walter's security images and although
I can get the captcha code to show it has to work with a form.
Unfortunately Jdownloads provides a link but not via a form which
defeats the captcha.

Jdownloads needs the ability to integrate captcha tools or at the very
least some modifications to allow 3rd party developers to implement
their own captcha. The developer Arno made the suggestion that I
use a list of blocked ip addresses but this is not so helpful as I have a
list of blocked IP addresses already. The trouble is that the bots are
hitting me from various ip addresses and are disguising themselves by
changing their ip address ranges. Also, I can only take the action after
the event, as they have already hit my site and I have already incurred
the bandwidth penalty. I am constantly updating the bot list which is a pain.

I have Cedric Walter's security images up and running and it displays
the captcha on the download page. The trouble is that the download page
does not use a form and so the captcha cannot intercept the form and
interact with it. You can see it partially working here:

http://lightquick.co.uk/downloads/steampunk-cpu-gpu-temperature-monitor-yahoo-widget.html

The captcha displays but does not interact with the download link. I
think it is time for jdownload to have a decent captcha facility, or a
change to allow 3rd party captchas to integrate with it. Perhaps the
download link could take the downloader to an additional simple
confirmation form that the 3rd party captcha could work with? This
means the developer would have minimal changes to do, just the
addition of a form.

{mmsimg mmsblog_00082_01.jpg test-captcha.jpg}

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