How to block referral spam using Nginx?

Question

I\'m running two mongrels under an Nginx server. I keep getting requests for a nonexistent file. The IP addresses change frequently but the referring URL stays the same. I\'d

Answer 1

https://calomel.org/nginx.html

Block most "referrer spam" -- "more of an annoyance than a problem"

nginx.conf

    ## Deny certain Referers (case insensitive)
    ## The ~* makes it case insensitive as opposed to just a ~
 if ($http_referer ~* (babes|click|diamond|forsale|girl|jewelry|love|nudit|organic|poker|porn|poweroversoftware|sex|teen|video|webcam|zippo))
    {  return 403;   }