centOS6.9 Firewall shutdown and open

Sometimes, we need to operate the firewall of the system, and today we will explain how to turn on and off the firewall under the CentOS6.9 system.

Input: Cat/etc/issue view version

(i) Through service orders

Service command on and off firewall for immediate effect, the next time you restart the machine will automatically recover.

View firewall Status: Service iptables status, remember in CentOS6.9 is input iptables, some online tutorials using service iptable Status command is not feasible.

Shutdown Firewall: Service iptables stop

Open firewall: Service iptables start

Summarize:

Open firewall: Service iptables start

Shutdown Firewall: Service iptables stop

View firewall Status: Service iptables status

(ii) through:/etc/init.d/iptables operation

View firewall Status:/etc/init.d/iptables/status

Shutdown firewall:/etc/init.d/iptables Stop (this is a temporary shutdown, shutdown is currently running the firewall, reboot after the firewall will start, because it is boot-initiated)

This is a temporary shutdown, shutdown is currently running the firewall, reboot after the firewall will start, because it is boot, it is equivalent to/etc/init.d/iptables start

(iii) need to turn on the boot does not start, using the Chkconfig command

Permanently open firewall: Chkconfig iptables on

View status: Chkconfig--list iptables

To permanently shut down the firewall:

Chkconfig iptables off