Unit iptables.service failed to load - RHEL 7/ CentOS 7/Fedora 中的防火墙
2017-07-02 21:01
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第一次使用 CentOS 7,配置防火墙的时候, iptables 服务不能用了,有的时候命令能成功,有的时候又不行,特别是那些写入的操作和服务相关的。在执行
下面就说一下如何在 Cent7 中像以前一样使用 iptables :
首先关闭并卸载 firewalld
安装iptables-services
设置开机启动:
启动服务
保存设置:
开放某个端口 在/etc/sysconfig/iptables里添加
至于新的
开放端口
查询端口是否开放
service iptables start/stop和
service iptables save之类的服务命令时会出现
Failed to restart iptables.service: Unit iptables.service failed to load: No such file or directory.的错误日志。原因是 CentOS 7 升级防火墙为 一个叫
firewalld的库了。
下面就说一下如何在 Cent7 中像以前一样使用 iptables :
首先关闭并卸载 firewalld
systemctl stop firewalld systemctl mask firewalld
安装iptables-services
yum install iptables-services
设置开机启动:
systemctl enable iptables
启动服务
systemctl stop iptables systemctl start iptables systemctl restart iptables systemctl reload iptables
保存设置:
service iptables save
开放某个端口 在/etc/sysconfig/iptables里添加
-A RH-Firewall-1-INPUT -m state --state NEW -m tcp -p tcp --dport 8080 -j ACCEPT
至于新的
fairwalld的用法最主要有两条:
开放端口
firewall-cmd --permanent --add-port=80/tcp
查询端口是否开放
firewall-cmd --permanent --query-port=80/tcp
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