So I am making an apache module that performs a reverse and forward lookup on an incoming ip then blocks or accepts based on the config. It is made to prevent search engine spoofers from accessing your website additionally can be used for prevent specific agents from accessing the site.
It is still a work in progress albeit should be good to go in tests, if you guys have the time please let me know what your suggestions and/or concerns are. I hope it is
useful to anyone needing a way to prevent these bad boys from accessing a site.