Systemd
systemctl list-units --type service --all systemctl status [service] systemctl enable [service]
Firewalld
firewall-cmd --list-all firewall-cmd --get-services cat /usr/lib/firewalld/services/[service].xml firewall-cmd --permanent --add-service=[service] firewall-cmd --add-port=[port]/[tcp or udp] firewall-cmd --reload
SELinux
getsebool -a | grep [service] setsebool -P [service]