Redirecting to /bin/systemctl restart iptables.service Failed to restart iptables.service: Unit not found.

This error message indicates that the "iptables.service" unit does not exist on your system, or it may have been renamed or removed.

The "iptables" service is responsible for managing the firewall rules on your Linux system. If you have recently updated your system or made changes to the firewall configuration, you may need to restart the firewall service to apply the changes.

To resolve this issue, you can try the following steps:

1. Verify that the "iptables" package is installed on your system by running the command:

   sudo yum list installed iptables

If the package is not installed, you can install it using the command:

   sudo yum install iptables

2. Check the name of the firewall service on your system by running the command:

   sudo systemctl list-unit-files | grep iptables

This will display a list of all the services on your system that contain the word "iptables".

3. Once you have identified the correct service name, restart the service using the command:

   sudo systemctl restart <service_name>

Replace `<service_name>` with the actual name of the service that you identified in step 2.

If the above steps do not resolve the issue, you may need to consult the documentation or seek assistance from your system administrator.