This may well sound like a very stupid question, so here goes…up to very recently I had two firewall in place. The first guarding the whole network / DMZ and acting as the gateway, which I regularly check, and the second being the Nethserver firewall between the DMZ and Lan. As I am in the process of renewing the first firewall I started to wonder about the Nethserver firewall.
So here is the question, do I actually need to do anything to the Nethserver firewall or does it act from default. Secondly can I actually get my hands dirty and block IP addresses from suspected hackers…do I need to add rules?