In this article I will show how to install and configure fail2ban
on a Mandriva 2008.1 system. Fail2ban is a tool that observes login
attempts to various services, e.g. SSH, FTP, SMTP, Apache, etc., and if
it finds failed login attempts again and again from the same IP address
or host, fail2ban stops further login attempts from that IP
address/host by blocking it with an iptables firewall rule.