Friday, April 11, 2014

Mod-Security Installing Along with - Open Source Rules

Installing the Mod Security.

## For RHEL/CentOS 6.2/6.1/6/5.8 ##

Installing needed Modules

yum install gcc make
yum install libxml2 libxml2-devel httpd-devel pcre-devel curl-devel\

Installing the Mod-Security

## For RHEL/CentOS 6.2/6.1/6/5.8 ##
cd /usr/src
tar xzf modsecurity-apache_2.6.6.tar.gz
cd modsecurity-apache_2.6.6
make install
cp modsecurity.conf-recommended /etc/httpd/conf.d/modsecurity.conf

Adding the Mod-security Module to the Apache

# vi /etc/httpd/conf/httpd.conf
LoadModule unique_id_module modules/
LoadModule security2_module modules/

[root@54 modsecurity-apache_2.6.6]# httpd -t -D DUMP_MODULES |grep sec
security2_module (shared)
Syntax OK
[root@54 modsecurity-apache_2.6.6]#

<IfModule security2_module>
Include conf.d/modsecurity.conf


Adding new Mod-Security Rules ..

OWASP core rule set

tar zxvf modsecurity-crs_2.2.5.tar.gz
mv modsecurity-crs_2.2.5 modsecurity-crs

mv modsecurity-crs /etc/httpd/conf.d/

Adding the rules to httpd

<IfModule security2_module>
Include conf.d/modsecurity.conf
Include conf.d/modsecurity-crs/activated_rules/*.conf
Include conf.d/modsecurity-crs/base_rules/*.conf
Include conf.d/modsecurity-crs/optional_rules/*.conf
Include conf.d/modsecurity-crs/slr_rules/*.conf

More rules are available at
sudo wget -O SpiderLabs-owasp-modsecurity-crs.tar.gz

Now the Mod Security is in the detect mode . once we are set we need to move it to on mode

[root@54 conf]# cat /etc/httpd/conf.d/modsecurity.conf |grep SecRuleEngine -i

SecRuleEngine DetectionOnly

# when SecRuleEngine is set to DetectionOnly mode in order to minimize

[root@54 conf]#

Change to

SecRuleEngine on


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