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  • centos6,与centos7对于防火墙的操作

    CentOS 6.5

    1.开放指定端口
    /sbin/iptables -I INPUT -p tcp --dport 端口号 -j ACCEPT   //写入修改
    /etc/init.d/iptables save                                       //保存修改
    service iptables restart                                               //重启防火墙,修改生效
    2.关闭指定端口
    /sbin/iptables -I INPUT -p tcp --dport 端口号 -j DROP       //写入修改
    /etc/init.d/iptables save                                        //保存修改
    service iptables restart                                          //重启防火墙,修改生效
    3.查看端口状态
    /etc/init.d/iptables status


    CentOS 7
    1.防火墙操作
    启动: systemctl start firewalld
    查看状态: systemctl status firewalld 
    停止: systemctl disable firewalld
    禁用: systemctl stop firewalld
    2.开放指定端口
    firewall-cmd --zone=public --add-port=80/tcp --permanent   //开放端口
    firewall-cmd --reload                                                                   //重新载入,使其生效
    3.关闭指定端口
    firewall-cmd --zone=public --remove-port=80/tcp --permanent         //关闭端口
    firewall-cmd --reload                                                                   //重新载入,使其生效
    4.查看端口状态
    firewall-cmd --zone=public --query-port=80/tcp                         //查看端口状态

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  • 原文地址:https://www.cnblogs.com/zuokun/p/10577706.html
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