[CentOS] Simple IPTABLES Question

--On Wednesday, August 20, 2008 1:49 PM +0300 Jussi Hirvi 
<greenspot at greenspot.fi> wrote:

> Fail2ban keeps up blacklists of ip:s that have failed authentication too
> many times. What is "too many", and the duration of blacklisting can be
> configured easily in /etc/fail2ban.conf.

The installation is easy, but the configuration looks daunting. There's a 
bunch of "jails" and it looks like I need to study fail2ban's model to 
understand what those do.