How to Install Mod_Security on Direct Admin

What is mod_security or modsecurity?

ModSecurity is an open source intrusion detection and prevention engine for web applications. It operates embedded into the web server, acting as a powerful umbrella - shielding applications from attacks. ModSecurity supports both branches of the Apache web server.
This HOW-TO is for Apache 2.X only.

cd /usr/local/src

mkdir modsecurity2

cd modsecurity2

wget http://www.serverbuddies.com/files/modsecurity-apache_2.5.9.tar.gz

perl -pi -e ’s/ServerTokens Major/ServerTokens Full/’ /etc/httpd/conf/extra/httpd-default.conf

perl -pi -e ’s/ServerSignature Off/ServerSignature On/’ /etc/httpd/conf/extra/httpd-default.conf

perl -pi -e ’s/ServerSignature EMail/ServerSignature On/’ /etc/httpd/conf/extra/httpd-default.conf

tar xzf modsecurity-apache_2.5.9.tar.gz

cd modsecurity-apache_2.5.9

cd apache2

./configure

make

make test

make install

Now we download a pre-defined mod_sec ruleset,

cd /etc/modsecurity2/

wget http://www.serverbuddies.com/files/modsec.v2.rules.conf

Add the new compiled mod_security module into the apache configuration,

vi /etc/httpd/conf/httpd.conf

After:

LoadModule php5_module /usr/lib/apache/libphp5.so

Add:

For 32bit -

LoadFile /usr/lib/libxml2.so

LoadModule security2_module     /usr/lib/apache/mod_security2.so

For 64bit -

LoadFile /usr/lib64/libxml2.so

LoadModule security2_module    /usr/lib/apache/mod_security2.so

At the botton of the httpd.conf config file we add the following,

# ModSecurity2 config file.

Include /etc/modsecurity2/modsec.v2.rules.conf

Restart the webserver.

service httpd restart

Installation should be completed and mod_sec should be now loaded on your Apache webserver.