Referer Spam

 RewriteEngine On
 #a known spamming site
 RewriteCond %{HTTP_REFERER} ^http://(.*\.)?egolddomain.(com|net)(/.*)?$ [NC,OR]
 #various "porno" words when separated by line breaks are probably spam
 RewriteCond %{HTTP_REFERER} ^http://.*(\b)porn(o(graph(y|er))?)?(\b).* [NC,OR]
 #referer url's with excessive - characters are probably spammers
 RewriteCond %{HTTP_REFERER} ^(http://www.)[a-z]+-[a-z]+- [NC,OR]
 #can add as many rules as desired following the pattern of the previous line
 #set an environment variable "BAD_GUY" so we can send their logs to a different file
 RewriteRule ^(.*) %{HTTP_REFERER} [R=301,E=BAD_GUY:1,L]
 #because we have set E=BAD_GUY above, we can do this in our log file:
 CustomLog /var/log/apache/access.log combined env=!BAD_GUY
 CustomLog /var/log/apache/access_bad.log combined env=BAD_GUY

See also

Retrieved from http://en.wikipedia.org/wiki/Referer_spam

Reprinted from Wikipedia, The Free-Content Encyclopedia under the GNU Free Documentation License.

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February 04 2012 04:08 UTC