CentOS 7.0 uses firewall as the firewall by default, and iptables must be reset
1. Turn off the firewall directly
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #Prohibit firewall from starting
2. Set iptables service
yum -y install iptables-services
If you want to modify the firewall configuration, such as adding firewall port 3306
vi /etc/sysconfig/iptables
add rules
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
After saving and exiting
systemctl restart iptables.service #Restart the firewall to make the configuration take effect
systemctl enable iptables.service #Set the firewall to start at boot
Finally, restart the system for the settings to take effect.
https://www.cnblogs.com/silent2012/archive/2015/07/28/4682770.html
CentOS 7.0 uses firewall as the firewall by default, and iptables must be reset
1. Turn off the firewall directly
systemctl stop firewalld.service #停止firewall
systemctl disable firewalld.service #Prohibit firewall from starting
2. Set iptables service
yum -y install iptables-services
If you want to modify the firewall configuration, such as adding firewall port 3306
vi /etc/sysconfig/iptables
add rules
-A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
After saving and exiting
systemctl restart iptables.service #Restart the firewall to make the configuration take effect
systemctl enable iptables.service #Set the firewall to start at boot
Finally, restart the system for the settings to take effect.
https://www.cnblogs.com/silent2012/archive/2015/07/28/4682770.html