You can enable or disable any apache module in Ubuntu using a2enmod and a2dismod, Not need to edit configuration file. Run the following command from root user To enable/disable a module: #a2enmod module_name #a2dismod module_name To enable modules #a2enmod expires #a2enmod headers #a2enmod rewrite #a2enmod mod-security #/etc/init.d/apache2 restart...