// Aula 2 - Gerenciando os Units

# systemctl status firewalld

# systemctl status iptables

# yum install -y iptables-services

# systemctl status iptables

# systemctl status firewalld

# systemctl start firewalld

# systemctl start iptables

# systemctl status iptables

# systemctl status firewalld

# systemctl start firewalld

# systemctl status firewalld

# systemctl status iptables

# systemctl mask iptables

# systemctl status iptables

# systemctl --type=target

# systemctl --type=target --all