How to use ESXi 5 as an NTP server - OR - How to permanently add custom firewall rules? Recently my attention was caught by a question posted to the VMware Community forums that sounds odd at first sight: Is it possible to configure ESXi 5.0 to act as a NTP server? I wondered why should you try to do this? On the one hand it is not recommended to use ESXi for anything else than the task that it wa