I want to block a specific IP (lets say 220.127.116.11) to have no access to any of my internal network (not even the orange DMZ network)
I’ve tried some firwall rules, but none of them seem to work.On our mailserver, I keep getting logs of this specific IP accessing.
I assume, when you add that specific IP as a firewall rule (but in the correct way) even the DMZ should be safe of am I wrong? Because to open ports to the DMZ, you have to have firewall forwarding rules?
Any help (with an example how to completely block a specific IP) would be appreciated!