htaccess question
 

I want to allow access to a folder only from links on certain pages. I know how to do this if pages are on the same domain. I have this code:

RewriteEngine On
RewriteCond %{HTTP_REFERER} !^http://([a-z0-9-]+\.)*domain.com/ [NC]
RewriteRule /* http://domain.com/enter.php [L,R]

But what if I want to allow access from several different domains and several different pages? Is that possible with htaccess?

I just got up so might be wrong, but i'm pretty sure in this case you can just add more of these lines..

RewriteCond %{HTTP_REFERER} !^http://([a-z0-9-]+\.)*domain.com/ [NC]

one for each domain, and it should work.

Check this out
http://www.htaccesstools.com/hotlink-protection/

It looks like it is working :) Thank you both!