吴本清博客 - NickorWu - 吴先生

1、关闭firewall：

systemctl stop firewalld.service #停止firewall

systemctl disable firewalld.service #禁止firewall开机启动

2、安装iptables防火墙

 #安装
 yum install iptables-services

编辑防火墙配置文件

vi /etc/sysconfig/iptables

# sample configuration for iptables service
# you can edit this manually or use system-config-firewall
# please do not ask us to add additional ports/services to this default configuration
 *filter
 :INPUT ACCEPT [0:0]
 :FORWARD ACCEPT [0:0]
 :OUTPUT ACCEPT [0:0]
 -A INPUT -m state --state RELATED,ESTABLISHED -j ACCEPT
 -A INPUT -p icmp -j ACCEPT
 -A INPUT -i lo -j ACCEPT

-A INPUT -p tcp -m state --state NEW -m tcp --dport 22 -j ACCEPT
 -A INPUT -p tcp -m state --state NEW -m tcp --dport 21 -j ACCEPT
 -A INPUT -p tcp -m state --state NEW -m tcp --dport 20 -j ACCEPT
 -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT
 -A INPUT -m state --state NEW -m tcp -p tcp --dport 3306 -j ACCEPT
 -A INPUT -j REJECT --reject-with icmp-host-prohibited
 -A FORWARD -j REJECT --reject-with icmp-host-prohibited
 COMMIT

:wq! #保存退出

systemctl restart iptables.service #最后重启防火墙使配置生效

systemctl enable iptables.service #设置防火墙开机启动

3、查看iptables端口情况

iptables -L -n

4、关闭SELINUX

vi /etc/selinux/config

#SELINUX=enforcing #注释掉
#SELINUXTYPE=targeted #注释掉
SELINUX=disabled #增加

:wq! #保存退出

setenforce 0 #使配置立即生效

转载：http://blog.csdn.net/u012486840/article/details/53161555
如有版权问题，请联系笔者删除