Apache mod_fortress

*** NOTE: replicated from the old application’s website, not updated since Jan 2003 ****   

Apache Application-level firewall/HTTP Intrusion detection system

mod_fortress is an application level firewall and intrusion detection system designed to intercept certain CGI/HTTP attacks by acting as a non-transparent proxy between an Apache server and an HTTP client. 
 

License

mod_fortress is released under the terms of the GNU General Public License. 
 

Download

• mod_fortress-1.0.tar.gz - For Apache 1.3.x and 2.0.x
• signatures.conf, httpd.conf directives
• now (1/23/2003) ships with Mandrake 9.0 Distributions, Package maintained by Oden Eriksson

Documentation

I haven’t written any documentation for it yet. But, you can find more information on it in the following books here:

Maximum Apache Security:   (ISBN: 067232380X)

and here: 

 Apache Webserver 2 (ISBN: 3827325668, in German)