This is a small IP address blocking “firewall” for an old PHP based website. It’s totally basic, with no features at all. This is for those annoying situations when old software contains security holes, and you find out in the logs, when you see some queries with a long string of SQL-like code.
I downloaded Symfony and got this error. I rushed to build a new PHP, but that wasn’t the solution.
The new Google Search Console shows you what URLs were are causing 404 errors, and not in the index. A static archive of this old Drupal site worked okay, but I needed to redirect old URLs so they’d work again.
The new Google Search Console is awesome. It gives you a lot of details about problems on your site that will harm the Google indexing, and cause pages to be dropped from the index.