centos7 iptables 安装与添加端口

1.安装

systemctl stop firewalld

systemctl mask firewalld

yum install iptables-services

2.开机启动

systemctl enable iptables

3.相关命令

systemctl stop iptables

systemctl start iptables

systemctl restart iptables

systemctl reload iptables

service iptables save

4.添加端口

vi /etc/sysconfig/iptables

然后在文本中添加需要的端口