Firewall par aapache

Configurar

firewall-cmd –add-service=http –add-service=https –permanent

firewall-cmd –reload

Firewall-cmd –get-default-zone

Firewall-cmd –list-all

Firewall-cmd –get-zones

Firewall-cmd –zone=home –list-all

Firewall-cmd –zone=public –add-service=http

Firewall-cmd –zone=public –list-services

Firewall-cmd –zone=public –add-port=3500/udp

Fuente: https://www.solvetic.com/tutoriales/article/3467-firewall-centos-7-configurar-habilitar-deshabilitar-crear-reglas/