Linux System Modify firewall configuration __linux

Modify Linux system firewall configuration need to modify

/etc/sysconfig/iptables

If you want to open which port, add a

-A rh-firewall-1-input-m state--state new-m tcp-p TCP--dport 3306-j ACCEPT

On it, where 3306 is the port number to open, and then restart the Linux Firewall service.

Linux to stop/start the Firewall service command:

After logging in with Root, execute the/sbin

Service Iptables stop-stopping

Service iptables Start--Startup

To start the service manually:

/sbin Rvice iptables Restart

To start when the system boots:

/sbin/chkconfig--level 345 iptables on

The IPChains service cannot run concurrently with the Iptables service. To determine if the IPChains service is disabled, execute the following command:

/sbin/chkconfig--level 345 IPChains off