CentOS7 关闭防火墙或开放端口
关闭防火墙
systemctl start firewalld.service
systemctl status firewalld.service
systemctl stop firewalld.service
# 设置开机启用防火墙
systemctl enable firewalld.service
# 设置开机禁用防火墙
systemctl disable firewalld.service
开放端口
查看开放的端口号
firewall-cmd --list-all
设置开放的端口号
firewall-cmd --add-service=http --permanent
firewall-cmd --add-port=3306/tcp --permanent
重启防火墙
firewall-cmd --reload