I wrote a very basic python script to port scan my system. I'm running linux-mint lisa: open_ports =  for port in xrange(65536): conn = socket.socket(socket.AF_INET, socket.SOCK_STREAM) ...
I know a certain range of IP addresses are causing problem with my server, 172.64.*.* what is the best way to block access to my Amazon EC2 instance? Is there a way to do this using security groups or ...
Someone keeps trying to connect to my Ubuntu machine through remote desktop. Is there any way I can determine who it is, and permanently block access to my machine?