CentOS7中禁用firewall,安装iptables

1、禁用firewall

需要停止 firewalld 服务，并将其设置为在启动时不自动启动。

1）检查防火墙状态

sudo systemctl status firewalld

2）停止并禁用它

sudo systemctl stop firewalld
sudo systemctl disable firewalld

2、安装iptables

1）安装iptables

sudo yum install iptables-services

2）启动iptables防火墙

systemctl start iptables.service

3）设置开机自动启动

systemctl enable iptables.service

4）检查iptables状态

sudo systemctl status iptables