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# Restore defaults
* Start with the default settings. When you install Iptables in CentOS it already has some rules predefined. You will get the default rules if you restart the iptables service.
* Save your rule in a bash script (.sh file) so you don't lose it and can rerun it easily.
{{Admon/important |Disconnected from VMs|Some of the traffic between your host and VirtManager goes through IPtables. When you mess with IPtables rules on the host - you may end up losing the console connection to the virtual machines. Don't worry, they're still running and you can still use them.}}
* If your command didn't work - the easiest thing to do is:
** Reload the default rules. You can do that by restarting the iptables service(you can also do that at the beginning of your shell script).
** Then run your script with all the working iptables commands that you already finished.
** Go back to writing the rule that didn't work.