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CentOS 7.X防火墙firewall改为iptables防火墙
CentOS 7.0默认使用的是firewall作为防火墙,这里改为iptables防火墙。1、关闭firewal...
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16
2018/10

CentOS 7.X防火墙firewall改为iptables防火墙

CentOS 7.0默认使用的是firewall作为防火墙,这里改为iptables防火墙。

1、关闭firewall:

systemctl stop firewalld.service
systemctl disable firewalld.service
systemctl mask firewalld.service

2、安装iptables防火墙

yum install iptables-services -y

3.启动设置防火墙

systemctl enable iptables
systemctl start iptables

4.查看防火墙状态

systemctl status iptables

5.编辑防火墙,增加端口

vi /etc/sysconfig/iptables #编辑防火墙配置文件

-A INPUT -m state --state NEW -m tcp -p tcp --dport 22 -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

:wq! #保存退出

6.重启配置,重启系统

systemctl restart iptables.service #重启防火墙使配置生效
systemctl enable iptables.service #设置防火墙开机启动

这是我的配置:

: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 80 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 888 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 8888 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 443 -j ACCEPT
-A INPUT -p tcp -m state --state NEW -m tcp --dport 3306 -j ACCEPT
-A INPUT -j REJECT --reject-with icmp-host-prohibited
-A FORWARD -j REJECT --reject-with icmp-host-prohibited
Last modification:October 16th, 2018 at 08:30 pm
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