Centos7关闭firewall，并使用iptables防火墙

2018年8月20日 156

关闭默认的firewall防火墙

systemctl stop firewalld.service 关闭防火墙

systemctl disable firewalld.service 关闭开机启动
开启iptables
yum -y install iptables

yum -y install iptables-services

service iptables restart

chkconfig iptables on或者systemctl enable iptables.service开机自启
编辑防火墙文件

vim /etc/sysconfig/iptables
# sampleconfiguration for iptables service

# # you can edit thismanually or use system-config-firewall

# # please do not askus 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 21 -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 80 -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

COMMIT 
添加防火墙命令

/sbin/iptables -I INPUT -p tcp --dport 80 -j ACCEPT
查看本机关于IPTABLES的设置情况

iptables -L -n