解决CentOS7关闭/开启防火墙出现Unit iptables.service failed to load: No such file or directory.
CentOS7中执行
firewall-cmd –reload
查看
firewall-cmd –zone= public –query-port=80/tcp
删除
firewall-cmd –zone= public –remove-port=80/tcp –permanent
并且安装iptables-services:
设置开机启动:
保存设置:
- service iptables start/stop
service iptables start/stop
会报错Failed to start iptables.service: Unit iptables.service failed to load: No such file or directory.
在CentOS 7或RHEL 7或Fedora中防火墙由firewalld来管理,
如果要添加范围例外端口 如 1000-2000
语法命令如下:启用区域端口和协议组合
firewall-cmd [–zone=<zone>] –add-port=<port>[-<port>]/<protocol> [–timeout=<seconds>]
此举将启用端口和协议的组合。端口可以是一个单独的端口 <port> 或者是一个端口范围 <port>-<port> 。协议可以是 tcp 或 udp。
实际命令如下:
firewall-cmd –zone=public –add-port=80/tcp –permanent (–permanent永久生效,没有此参数重启后失效)
firewall-cmd –zone=public –add-port=1000-2000/tcp –permanent
firewall-cmd –reload
查看
firewall-cmd –zone= public –query-port=80/tcp
删除
firewall-cmd –zone= public –remove-port=80/tcp –permanent
当然你可以还原传统的管理方式。
执行一下命令:
- systemctl stop firewalld
- systemctl mask firewalld
systemctl stop firewalld
systemctl mask firewalld
并且安装iptables-services:
- yum install iptables-services
yum install iptables-services
设置开机启动:
- systemctl enable iptables
systemctl enable iptables
- systemctl stop iptables
- systemctl start iptables
- systemctl restart iptables
- systemctl reload iptables
systemctl stop iptables
systemctl start iptables
systemctl restart iptables
systemctl reload iptables
保存设置:
- service iptables save
service iptables save
OK,再试一下应该就好使了
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
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