【非常重要】centos7 防火墙【firewall-cmd 常用命令】

待我称王封你为后i 2021-09-30 17:02 309阅读 0赞

参考常用命令：[https://www.cnblogs.com/klvchen/p/10063875.html][https_www.cnblogs.com_klvchen_p_10063875.html]

如果centos系统未安装防火墙，请参考：CentOS 7上安装配置FirewallD防火墙详解[https://www.linuxidc.com/Linux/2018-11/155155.htm][https_www.linuxidc.com_Linux_2018-11_155155.htm]

**更加全面的命令【如果禁止某个ip或ip端访问参考】：**[https://www.cnblogs.com/Crazy-Liu/p/13527997.html][https_www.cnblogs.com_Crazy-Liu_p_13527997.html]

# 开启防火墙
    systemctl start firewalld.service
    
    # 防火墙开机启动
    systemctl enable firewalld.service
    
    # 关闭防火墙
    systemctl stop firewalld.service
    
    # 查看防火墙状态
    firewall-cmd --state
    
    # 查看现有的规则
    iptables -nL
    
    # 重载防火墙配置
    firewall-cmd --reload
    
    # 添加单个单端口
    firewall-cmd --permanent --zone=public --add-port=81/tcp
    
    # 添加多个端口
    firewall-cmd --permanent --zone=public --add-port=8080-8083/tcp
    
    # 删除某个端口
    firewall-cmd --permanent --zone=public --remove-port=81/tcp
    
    # 针对某个 IP开放端口
    firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.142.166" port protocol="tcp" port="6379" accept"
    firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.0.233" accept"
    
    # 删除某个IP
    firewall-cmd --permanent --remove-rich-rule="rule family="ipv4" source address="192.168.142.166" port protocol="tcp" port="6379" accept"
    firewall-cmd --permanent --remove-rich-rule="rule family="ipv4" source address="192.168.1.51" accept"
    
    
    # 针对一个ip段访问
    firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.0.0/16" accept"
    firewall-cmd --permanent --add-rich-rule="rule family="ipv4" source address="192.168.1.0/24" port protocol="tcp" port="9200" accept"
    
    # 添加操作后别忘了执行重载
    firewall-cmd --reload

用法2：[https://blog.csdn.net/ywd1992/article/details/80401630][https_blog.csdn.net_ywd1992_article_details_80401630]

[https_www.cnblogs.com_klvchen_p_10063875.html]: https://www.cnblogs.com/klvchen/p/10063875.html
[https_www.linuxidc.com_Linux_2018-11_155155.htm]: https://www.linuxidc.com/Linux/2018-11/155155.htm
[https_www.cnblogs.com_Crazy-Liu_p_13527997.html]: https://www.cnblogs.com/Crazy-Liu/p/13527997.html
[https_blog.csdn.net_ywd1992_article_details_80401630]: https://blog.csdn.net/ywd1992/article/details/80401630