[CentOS] Firewall for virtual machines

>Huh? I've *NEVER* heard great things about WinDoze firewall...

That's only because the interface for it is far too complicated for most people
to comprehend. Netsh and/or the registry.

Simply because what the gui reveals is little of the feature scope, most think it
doesn't do much. It's almost like iptables in capacity (almost I said) with some
additional functionality in that it can control access on a program by program basis.
Pretty "great" if you ask me:)