About mod_evasive related 403 errors

Symptoms

When using the Apache module mod_evasive, you may encounter 403 errors.

Description 

The 403 error occurs when Apache blocks a user who has made too many requests in a short period. If legitimate users frequently encounter 403 errors, it may be necessary to adjust the mod_evasive configuration.

Workaround

1. Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
2. Open /etc/apache2/conf.d/300-mod_evasive.conf in your preferred text editor.
3. Locate the DOSPageCount line.
4. Change the DOSPageCount value to the desired value.

   DOSPageCount 40

   Please note that "40" must be replaced with the desired value.
5. Locate the DOSSiteCount line.
6. Change the DOSSiteCount value to the desired value.

   DOSSiteCount 200

   Please note that "200" must be replaced with the desired value.
7. Save the changes and exit the text editor.
8. Rebuild the Apache configuration.

   /usr/local/cpanel/scripts/rebuildhttpdconf

9. Restart Apache.

   /usr/local/cpanel/scripts/restartsrv_httpd

Additional resources

Apache Module — Evasive