DoS protection keeps your sites and the data contained on them safe from potential attacks and is always active on FORPSI Linux servers.
If the server receives too many requests from the same client or IP address, it is blocked, and an error message 429 "Too Many Requests" appears on the screen.
This error is displayed only to the client/IP from which the requests originate. After a certain period, the website is made accessible to the client/IP again. If the same situation repeats, the website is blocked again for that visitor.
Causes that generate a high number of requests from the same client/IP include, for example:
- DoS attack attempts.
- Malfunctioning plugins or themes on WordPress.
If the error is encountered by the website administrator, it is most likely caused by a malfunctioning theme or plugin.
To check the number of requests coming to the website, open the browser, navigate to the website, and press the F12 key. This will open a screen similar to the one below, where you can check the number of requests:
If the F12 key does not work, we recommend trying the key combination fn+F12 or using a different browser.
In most cases, the request loop can be eliminated by disabling the plugin or theme causing the issue.