Linux CentOS7 turn off the firewall CentOS6 close open close open CentOS firewall firewall
A, CentOS 7 to close the open firewall
1, start the firewall: systemctl Start firewalld
2, disable the firewall: systemctl STOP firewalld
3, set the boot: systemctl enable firewalld
4, stop and disable the boot: sytemctl disable firewalld
5, restart the firewall: Firewall-cmd --reload
6, view the status: systemctl Status firewalld
Two, CentOS 6 is closed to open the firewall
1, open the firewall (after the restart permanent): chkconfig iptables ON
2, turn off the firewall (after the restart permanent): chkconfig iptables OFF
3, open the firewall (with immediate effect, after the restart failure): Service iptables Start
4, turn off the firewall (with immediate effect, after the restart failure): Service iptables STOP
5, restart the firewall: Service iptables restartd
