報錯

[root@Jaking ~]# service iptables save
The service command supports only basic LSB actions (start, stop, restart, try-restart, reload, force-reload, status). For other actions, please try to use systemctl.

解決方法

停止 firewalld

[root@Jaking ~]# systemctl stop firewalld
[root@Jaking ~]# systemctl mask firewalld
Created symlink from /etc/systemd/system/firewalld.service to /dev/null.

安裝 iptables-services

[root@Jaking ~]# yum install -y iptables-services

開啟 iptables

[root@Jaking ~]# service iptables start
Redirecting to /bin/systemctl start iptables.service

還可以使用 systemctl 來控制 iptables

systemctl [start|status|stop|restart|enable] iptables

把 iptables 加到開機啟動項中

[root@Jaking ~]# systemctl enable iptables
Created symlink from /etc/systemd/system/basic.target.wants/iptables.service to /usr/lib/systemd/system/iptables.service.

清空防火牆

[root@Jaking ~]# iptables -F

儲存防火牆規則

[root@Jaking ~]# service iptables save
iptables: Saving firewall rules to /etc/sysconfig/iptables: [  OK  ]
# 或者
[root@Jaking ~]# /usr/libexec/iptables/iptables.init save
iptables: Saving firewall rules to /etc/sysconfig