Hi there. I just found , not really pretty thing at my server. On one of my sites i runned : PHP: <?php exec('find /var/www/clients/ -iname "*" | xargs grep "<?" -sl', $files3); print_r($files3); die(); And i got ALL files of ALL users with "<?" in it. I don't think, it's normally. Is it my fault , did i something wrong? Please, help!
Thats normal and not related to ispconfig, so i moved it to the server administration forum. On hosting servers were you want to prevent that, disable functions like exec, passthru, popend ans some others in the php.ini files for php cgi, php fpm and apache (but not in the cli php). You will find detailed tutorials when you google for instructions to harden php. And ensure that you use php mode fcgi, fpm or cgi and enable suexec.