Centos7 Setting the firewall off

CentOS 7.0 defaults to using firewall as the firewall and must be reset if you want to use iptables.

1. Turn off the firewall

[Email protected] ~]# Systemctl stop Firewalld.service

2. Disable the firewall from starting

[Email protected] ~]# systemctl disable Firewalld.service

3. Installing the Iptables Service

Yum-y Install Iptables-services

4. Modify firewall configuration, such as add firewall Port 3306

Add the following rules

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

After saving exits

Restart the firewall for configuration to take effect

[Email protected] ~]# systemctl restart Iptables.service

Setting up a firewall boot

[Email protected] ~]# Systemctl enable Iptables.service

Restart the system for the settings to take effect

[email protected] ~]# reboot

Note:after MySQL is installed, the remote cannot connect successfully if the firewall is not turned off.

Centos7 Setting the firewall off