Hi,

I've installed Knoppix and connected to the net. I understood there's no firewall and that by default 'all ports are closed'. However, (and excuse me for being such a newbie), I don't understand if this means the computer is actually secure or not.

I'm not running a server. My computer is a pure client. If all ports are closed, and are only opened when I willingly open them to access a network resource, that should be secure enough, right?

Or can this be exploited?

In short, what should I do to get decent security using my Knoppix box (installed to the HD) on the network?