ModSecurity

ModSecurity is a plugin for Apache web servers which acts as a web application layer firewall. It is employed to stop attacks against script-driven websites through the use of security rules which contain particular expressions. This way, the firewall can prevent hacking and spamming attempts and shield even websites that aren't updated regularly. As an example, multiple failed login attempts to a script administrator area or attempts to execute a specific file with the objective to get access to the script shall trigger particular rules, so ModSecurity shall block out these activities the minute it detects them. The firewall is very efficient since it screens the entire HTTP traffic to a website in real time without slowing it down, so it can easily prevent an attack before any harm is done. It furthermore keeps an exceptionally detailed log of all attack attempts that contains more information than conventional Apache logs, so you can later examine the data and take additional measures to enhance the security of your websites if necessary.