In this guide, we will demonstrate how to install fail2ban and configure it to monitor your Apache logs for intrusion attempts. Setting up fail2ban to monitor Apache logs is easy using the included configuration filters. Each fail2ban “jail” operates by checking the logs written by a service for patterns which indicate failed attempts. When users repeatedly fail to authenticate to a service (or engage in other suspicious activity), fail2ban can issue a temporary bans on the offending IP address by dynamically modifying the running firewall policy. Setting up fail2ban can help alleviate this problem. However, any publicly accessible password prompt is likely to attract brute force attempts from malicious users and bots. Protecting your web sites and applications with firewall policies and restricting access to certain areas with password authentication is a great starting point to securing your system.
When operating a web server, it is important to implement security measures to protect your site and users.
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