Currently Nginx can block IP on application level and thus send a 403 forbidden message back to the client.

I wonder if there's a way to block any request at the socket level, preferably not even sending a FIN message to the client but simply dropping the packet. Right now i'm using iptables but i'm really looking to have such feature on nginx itself, and if not supported right on current build, how could I have a hook to the socket and control it on a home made server module/handler?

Cheers,
__Jr