Is it possible to run a dedicated server on a virtualbox guest machine?
Naturally using NAT or network NAT and port-forwarding to port forward all the needed ports to host. In such a case the client should be connect to localhost, otherwise it is always possible to use Bridged Network configuration, giving the guest an network interface on the LAN.
I should have enough CPU computing power (intel i7-4820K) and RAM (16GB) to make it working...
Have you already done any trial about installing it in a virtualbox guest machine?
you can run lan/dedicated server on windows, mac and linux