I've looked and I've not found a difinitive guide to installing dos_evasive on a cpanel server. Here's what I'm attmpting to do:
cd /usr/local/src
wget http://www.nuclearelephant.com/projects/mod_evasive/mod_evasive_1.10.1.tar.gz
tar zxpf mod_evasive.1.10.1.tar.gz...