Reading this I'm almost certain the firewall vendor is Palo Alto Networks. They included a PAN-OS setting verbatim and the SELinux config matches my experience.
Further indication is that PHP 7.4.33 and PHP 8.30.0 are mentioned which are an exact match for PAN-OS 11.1/11.2 and 12.1/12.2 respectively
public markets point to FORTINET
Further indication is that PHP 7.4.33 and PHP 8.30.0 are mentioned which are an exact match for PAN-OS 11.1/11.2 and 12.1/12.2 respectively