[thelist] hotlinking

DESCHAMPS Stéphane DSI/SICOR stephane.deschamps at francetelecom.com
Fri Oct 31 03:54:35 CST 2003

John C Bullas wrote:

> >http://www.allmyfaqs.com/faq.pl?Prevent_bandwidth_theft
> Implemented in each graphic images directory

There was a discussion here a few months ago that said that more and more firewalls hide referer information to prevent easy hacking of some sort (sorry, no time to re-google the thread, but I thought you'd like to know anyway).

Thus if you check the referer that asks for you images and there's no HTTP_REFERER, you'll send the bad.gif image to someone who's earnestly browsing your site with a browser set to normal settings but with an ISP who's restricted the feature.

You might want to be careful with this method.

s t e f

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