"First, Core 10 is more secure out of the box than any prior
version of the Fedora operating system. How secure? It installs
both iptables and SELinux by default, and it does not give you the
option not to install them or turn them off initially. If you are
unfamiliar with these, especially SELinux, you should read up on
them. It has been ten years since I last worked with SELinux, so I
need to get back to the books...er...wikis.
"Second, vncserver does not install by default, nor do the twm
or xterm applications that the default configuration of vncserver
uses.
"So, first, install the package(s). I did a simple yum install
vncserver xterm twm."