<ol><li value="2">Save Place your rule in iptables commands (i.e. Rules) within a bash script (.sh filebash) so you don't lose it and can rerun it easily.<br><br></li><li>If you are disconnected from a VM: Some of the traffic between your host and VirtManager goes through IPtables.<br> 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.</li></ol>