查看firewalld防火墙状态
# systemctl status firewalld
active(runing)代表运行
关闭firewalld防火墙,禁止开机启动
# systemctl stop firewalld && systemctl disable firewalld
检查firewalld防护墙状态
# systemctl status firewalld
如图所示,已经关闭
安装iptables-services服务
# yum install iptables-services #此处可以使用 yum install -y iptables-s* 来查询以“iptables-s”开头的安装包
启动iptables服务并设置开机自启
# systemctl start iptables && systemctl enable iptables
查看状态
#systemctl status iptables