Kanstantin Reznichak wrote:
Hello,One of my servers was affected by TCP flood attack targeted to http service (Apache 2.2.8). Short attack description: an attacker opens large amount of TCP connections to Apache service and sends few bytes (for example, a single “GET / HTTP/1.1” line) to every opened connection. The HTTP service opens a new process for every such connection and waits for further input. After a short time, HTTPd runs out of connection limit and stops responding.Some of my servers are protected by state tracking firewall that protects them against such kind of attack.My question: is there possible to configure Apache HTTPd in order to protect it against these attacks?
Check out mod_limitipconn. You can restrict the number of simultaneous connections from individual IP addresses.
http://dominia.org/djao/limitipconn.html -- Justin Pasher --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: users-unsubscribe@xxxxxxxxxxxxxxxx " from the digest: users-digest-unsubscribe@xxxxxxxxxxxxxxxx For additional commands, e-mail: users-help@xxxxxxxxxxxxxxxx
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