Block images

[pedroz]

RewriteCond %{HTTP_REFERER} !^http://www.domain.com/.*$ [NC]
RewriteCond %{HTTP_REFERER} !^http://www.domain.com$ [NC]
RewriteCond %{REQUEST_URI} !^media [NC]
RewriteRule \.(jpg|jpeg|gif|png)$ http://www.domain.com/stop.bmp [R,NC,L]

This is blocking all images in media folder to be shown from outside servers. I know HTTP_REFERER is not very powerful but enough for this work…

PROBLEM:

• If you try to open in the browser: http://www.domain.com/media/1.jpg
  Firefox and IExplorer: Blocked! stop.bmp shown.

• If you try to open in the browser: http://www.domain.com/box/close.png
  Firefox: allows to open ok
  IExplorer: blocks again, when it was suppose to allow.

Can you please explain me the reason?

Regards,

[pedroz]

thanks for ur reply.

cleaned all cache but not working.

[felgall]

You should convert that BMP into a web graphics format so that browsers other than Internet Exploder can display it and so that it doesn’t take thousands of times longer than necessary to download.

[dklynn]

pedro,

While cacheing may be a (temporary) problem, my first reaction was that your {HTTP_REFERER} regex could be vastly improved. Give this a try:

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^http://(www\\.)?domain\\.com [NC]
RewriteCond %{REQUEST_URI} !^media [NC]
RewriteRule \\.(jpg|jpeg|gif|png)$ http://www.domain.com/stop.bmp [R=301,[COLOR="Magenta"]NC,[/COLOR]L]

I am NOT fond of your use of NC but, if your {path/filename}.{image extension} mixes case of letters, then leave it alone.

Note that you’ve permitted images from other than the media directory to be served.

Regards,

DK

[rpkamp]

Sounds to me like a caching problem in IE, since IE has no influence over what the webserver does or doesn’t allow. Have you tried clearing your cache?