ModSecurity is a potent web application layer firewall for Apache web servers. It monitors the whole HTTP traffic to a site without affecting its operation and in case it identifies an intrusion attempt, it blocks it. The firewall additionally maintains a more thorough log for the site visitors than any server does, so you shall be able to monitor what is going on with your websites better than if you rely only on standard logs. ModSecurity uses security rules based on which it helps prevent attacks. For instance, it recognizes whether anyone is attempting to log in to the administration area of a particular script multiple times or if a request is sent to execute a file with a certain command. In these instances these attempts set off the corresponding rules and the firewall program blocks the attempts right away, then records comprehensive info about them within its logs. ModSecurity is amongst the very best software firewalls out there and it can easily protect your web applications against thousands of threats and vulnerabilities, particularly in case you don’t update them or their plugins frequently.