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mod_defensible es un módulo Apache 2.x destinados a bloquear los spammers / hackers / script kiddies utilizando servidores DNSBL. Se examinarán las IP del cliente y se comprobará que en uno o varios servidores DNSBL devuelven una página al cliente "403 Forbidden". Esta guía muestra cómo instalar y utilizar en conjunto con Apache 2 en un servidor Debian Etch. mod_defensible is an Apache 2.x module intended to block spammers/hackers/script kiddies using DNSBL servers.
It will look at the client IP and check it in one or several DNSBL
servers and return a 403 Forbidden page to the client. This guide shows
how to install and use it with Apache 2 on a Debian Etch server.
https://www.howtoforge.com/block-spammers-hackers-with-mod_defensible-on-apache2-debian-etch

https://www.howtoforge.com/block-spammers-hackers-with-mod_defensible-on-apache2-debian-etch
