Doesnt have to be a difference if you don't want to have it. For us, our fileserver
is also a regular cpuserver used just for the web, mail, and the like. But you could
certainly use it to export your fossil to the network and nothing else; and it would
behave like the old worm. In fact, we are not even exporting venti, since it
runs only on a loopback interface to service fossil requests.