nginx防盗链

location ~* \.(gif|jpg|png|swf|flv)$ {  
root html  
valid_referers none blocked *.nginxcn.com;  
if ($invalid_referer) {  
rewrite ^/ [www.nginx.cn](http://www.nginx.cn/)  
#return 404;  
}  
}

前面的root可以不要如果你在server{}中有设置可以不需要设定

原文: https://wizardforcel.gitbooks.io/nginx-doc/content/Text/7.5_doorchain.html