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Errors after NGINX Wallarm node installation

If some errors occur after NGINX Wallarm node installation, check this troubleshooting guide to address them. If you did not find relevant details here, please contact Wallarm technical support.

File Download Scenarios Fail

If your file download scenarios fail after installing a filter node, the issue is in the request size exceeding the limit set in the client_max_body_size directive in the Wallarm configuration file.

Change the value in client_max_body_size in the directive location for the address that accepts the file uploads. Changing only the location value protects the main page from getting large requests.

Change the value in client_max_body_size:

  1. Open for editing the the /etc/nginx/sites-enabled/default file.

  2. Put in the new value:

    location /file/upload {
 client_max_body_size 16m;
}

    /file/upload is the address that accepts the file uploads.

Detailed directive description is available in the official NGINX documentation.

Why does not the filtering node block attacks when operating in blocking mode (wallarm_mode block)?

Using the wallarm_mode directive is only one of several methods of traffic filtration mode configuration. Some of these configuration methods have a higher priority than the wallarm_mode directive value.

If you have configured blocking mode via wallarm_mode block but Wallarm filtering node does not block attacks, please ensure that filtration mode is not overridden using other configuration methods:

More details on filtration mode configuration methods →