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Home > Forums > MIS/IT > Web Servers > Microsoft: Internet Information Server Forum

 prevent direct linking to images from outside site

thread41-281098
Streetdaddy (Programmer)
27 May 02 11:21
Is there an easy way to prevent other users from copying the URL of an image on my site, and then using it on another site or setting the image as a favourite?

Miles
busymiles@lan-house.net
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hads (TechnicalUser)
27 May 02 21:29
Hmm... Sorry I don't know how to do it for IIS, this is a good tip for apache http://alicorna.com/techtips.html#bandwidththeft but not sure if that helps much :(

Can anyone else enlighten us?


01101000011000010110010001110011
Streetdaddy (Programmer)
29 May 02 1:21
I've discovered this works if all your images are in a single folder. For other configurations, you might need to tweak it a bit.
 
     SetEnvIf Referer "^http://www.example.com/"; local_referal
     # Allow browsers that do not send Referer info
     SetEnvIf Referer "^$" local_referal
     <Directory /web/images>
        Order Deny,Allow
        Deny from all
        Allow from env=local_referal
     </Directory>

See also

http://apachetoday.com/news_story.php3?ltsn=2000-06-14-002-01-PS

I like the look of that .htaccess solution too ;)  thanks!

Miles

Those Micros~1 guys sure know what they doing!

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