Mod_evasive is a module for Apache to provide evasive action in the event of an HTTP DoS or DDoS attack or brute force attack. It can be easily configured to talk to ipchains, firewalls, routers, and etcetera. mod_evasive reports abuses via email and syslog facilities. Detection is performed by creating an internal dynamic hash table of IP Addresses and URIs, and denying any single IP address from requesting the same page more than a few times per second or making more than 50 requests with the same child per second.
