Firewalld provides a dynamically managed firewall with support for
network/firewall zones to define the trust level of network connections
or interfaces. It has support for IPv4, IPv6 firewall settings and for
ethernet bridges and has a separation of runtime and permanent
configuration options. It also supports an interface for services or applications to add firewall rules directly.
How to Start/Stop and Enable/Disable FirewallD Service
This command will work on CentOS/RHEL 7 or Fedora 18+
Check the Status of FirewallD
# systemctl status firewalld
Check the State of FirewallD
# firewall-cmd --state
Start FirewallD Service
# systemctl start firewalld
Stop FirewallD Service
# systemctl stop firewalld
Disable FirewallD Service
# systemctl disable firewalld
Enable FirewallD Service
# systemctl enable firewalld
Conclusion
Now, you have successfully learned how to disable/stop Firewalld services on centos7
