Thanks for your reply. Yeah, I have dozens of machines with licenses from a reseller (ionos) but I guess they do not give this kind of support since all of them are unmanaged VPS. I'll take a look at those links, thanks gain.
Hello!
In the last weeks our sites started to show random 403 forbidden errors.
It happens on different machines (both CentOS Linux 7.9.2009 (Core) Version 18.0.55 Update #2)
If you just F5, after the error, then you can navigate so it's not a permission problem.
Web Application Firewall is...