Solve the Problem of Unit iptables. service failed to load, rhelcentos in RHEL 7/CentOS 7/Fedora

Solve the Problem of Unit iptables. service failed to load, rhelcentos in RHEL 7/CentOS 7/Fedora

After the firewall is configured, run service iptables save to display "Failed to restart iptables. service: Unit iptables. service failed to load: No such file or directory. "error: the firewall is managed by firewalld in CentOS 7, RHEL 7, or Fedora. Of course, you can restore the traditional management method. Or use the new command for management.

If you use traditional commands, run the following command:

Systemctl stop firewalld

Systemctl mask firewalld

And install iptables-services:

Yum install iptables-services

Set boot start:

Systemctl enable iptables

Systemctl [stop | start | restart | reload] iptables (executed separately)

Save settings:

Service iptables save or/usr/libexec/iptables. init save