Configurando
$ firewall-config
Monitoramento:
$ firewall-applet
Removendo eco-resposta
$ systemctl status firewalld
$ firewall-cmd --state
$ firewall-cmd --permanent --zone=public --add-icmp-block=echo-reply
$ firewall-cmd --complete-reload
Desligando
$ sudo systemctl stop firewalld
$ sudo systemctl disable iptables.service