Some times we need to hide apache banner information, because hackers check version details, before attacking a sever, If you close this door, it is more difficult for them to exploit any system holes and thus making vulnerability scanners work harder and in some cases impossible without knowing version information.

mod_qos gives some fine-grained opportunities to scale the number of used connections and to defend an attack according to bandwidth limits. Unfortunately it is only available as source-package and there are many possible settings, wich might be hard to set up for this special case. So I provide the way that helped me.