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                [toc] > linux防火墻有兩種?iptables、Firewalls。 ## 一、iptables防火墻 ### 1、基本操作 ``` # 查看防火墻狀態 service iptables status # 停止防火墻 service iptables stop # 啟動防火墻 service iptables start # 重啟防火墻 service iptables restart # 永久關閉防火墻 chkconfig iptables off # 永久關閉后重啟 chkconfig iptables on ``` ### 2、開啟80端口 ``` vim /etc/sysconfig/iptables # 加入如下代碼 -A INPUT -m state --state NEW -m tcp -p tcp --dport 80 -j ACCEPT ``` 保存退出后重啟防火墻 ``` service iptables restart ``` ## 二、firewall防火墻 1、查看firewall服務狀態 ``` systemctl status firewalld ``` 出現Active: active (running)切高亮顯示則表示是啟動狀態。 出現 Active: inactive (dead)灰色表示停止,看單詞也行。 2、查看firewall的狀態 ``` firewall-cmd --state ``` 3、開啟、重啟、關閉、firewalld.service服務 ``` # 開啟 service firewalld start # 重啟 service firewalld restart # 關閉 service firewalld stop ``` 4、查看防火墻規則 ``` firewall-cmd --list-all ``` 5、查詢、開放、關閉端口 ``` # 查詢端口是否開放 firewall-cmd --query-port=8080/tcp # 開放80端口 firewall-cmd --permanent --add-port=80/tcp # 移除端口 firewall-cmd --permanent --remove-port=8080/tcp #重啟防火墻(修改配置后要重啟防火墻) firewall-cmd --reload ``` 參數解釋 1、firwall-cmd:是Linux提供的操作firewall的一個工具; 2、--permanent:表示設置為持久; 3、--add-port:標識添加的端口;
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