What firewall do I need to install under Linux? - they ask
This has been asked by a friend of mine some time ago. In short, you have the needed links over here: http://en.wikipedia.org/wiki/Netfilter As it was a phone call, I started the conversation by telling him that you don't necessarily need a firewall, or at least it's not a problem if you will only have time to configure the system in a week or so. "Really?" - he gasped. In short, I told him, you can trust an Ubuntu system (okay, not the best example of this but that's what he had at hand :->) much more than what you had before. You see he was accustomed to seeing malware taking over his w. system in a matter of minutes and having a need for re-installation many times despite taking precaution (firewall, virus scanners, etc.) _and_ having an I.T. background. He asked me how this could be true. I said it's simple. There exist many layers of protection that improve your security. You can install software packages that are signed by a trusted third party (the d