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  • CentOS 7.0,启用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       #停止firewall

    systemctl disable firewalld.service    #禁止firewall开机启动

    2、安装iptables防火墙

    yum install iptables-services      #安装

    vi /etc/sysconfig/iptables         #编辑防火墙配置文件

    # 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 -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
    -A INPUT -m state --state NEW -m tcp -p tcp --dport 5672 -j ACCEPT
    -A INPUT -m state --state NEW -m tcp -p tcp --dport 15672 -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

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  • 原文地址:https://www.cnblogs.com/liaojie970/p/6141981.html
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