Fail2Ban monitors log files like /var/log/pwdfail or /var/log/apache/error_log and bans failure-prone addresses. It updates firewall rules to reject the IP address or executes user defined commands.
Please see code and download from https://github.com/fail2ban/fail2ban . SF Fail2ban portal might not be up-to-date
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Fail2Ban is just the tool that removes the headache of chasing and banning IP addresses. By setting up of some simple rules one can catch SSH attacks, constant probing of web vulnerability attacks. I wholeheartedly recommend Fail2Ban to any server administrator
O melhor programa para compartilhamento
I use fail2ban for 2 main reasons. The first is to automatically ban people trying to hack into the system by stopping IP traffic for a given time after a number of failed login attempts. I also use it to reduce load on RBL servers by blocking IP addresses that are returned by a RBL. This means an IP address will never be checked twice.
very good project
The best way to block those nasty bots and spammer. It's amazingly easy to configure and deploy.