Okey, i'm now running modsecurity 2 with owasp 2.7.1 Rules.
For those who want to protect their servers against WEB attacks on a Debian Squeeze read the following Manuals.
First (remember to change the paths in some commands, CHECK IT)
https://github.com/SpiderLabs/ModSec...ion_for_Apache
Second, download and install (follow INSTALL file inside the .tar) the rule set from
https://www.owasp.org/index.php/Cate...le_Set_Project
Third (Optional) - Bann Attackers with iptables
http://spamcleaner.org/en/misc/modsec2ipt.html