Fortuitously, today I found a note that some years ago I marked as "critical", so here I am to share it with those who might need it one day 
When nearly four years ago I moved Serverland from a virtual server to a real one, I thought that it was a good idea to continue to be virtualized, so I installed VMWare Server (it's free!).
Then, the shockingly low performance in accessing the virtual disks, led me to uninstall it, but at the time I had a problem: in the Windows version of VMware Server, there is a convenient panel for configuring the virtual network, but in linux version is absent ... what we can do?
The answer is here: http://www.howforge.com/port-forward-in-vmware-server-for-linux