How do I turn off the firewall under Linux? How to view the current state of a firewall

Shutting down the firewall from the configuration menu is not working, simply do not install the firewall at the time of installation
To view the firewall status:
/etc/init.d/iptables status
To temporarily turn off the firewall:
/etc/init.d/iptables stop
Prevent firewalls from starting at system startup
/sbin/chkconfig--level 2345 iptables off
Restart Iptables:
/etc/init.d/iptables restart
Off Topic:
BT or mule slow not need to shut down the firewall, as long as the corresponding port open on it.
In the file
/etc/sysconfig/iptables
In the system's original configuration: The Rh-firewall-1-input rule chain adds a line like this:
-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 39764-j ACCEPT
-A rh-firewall-1-input-m state--state new-m udp-p UDP--dport 39764-j ACCEPT
If you find the original-j reject a class of statements, the above two sentences to put in front of it

Effective after reboot
Open: Chkconfig iptables on
OFF: chkconfig iptables off or/sbin/chkconfig--level 2345 iptables off

2) immediate effect, failure after reboot
Service Mode
Open: Service iptables start
Close: Service iptables stop
Iptables Way
To view the firewall status:
/etc/init.d/iptables status
To temporarily turn off the firewall:
/etc/init.d/iptables stop
Restart Iptables:
/etc/init.d/iptables restart

How do I turn off the firewall under Linux? How to view the current state of a firewall