At first, please excuse my bad english spelling.
I have criminals on my system and they are watching what I am doing ! Then they do the man in the middle and block some websites or slow down internetspeed and so on.
I configured SSH (sshd_config) for no root login and disabled X11Forwarding, enabled firewall, block in and outgoing port 1,22,23,111,2222,5800,5900,6000,6010,10000.
What else do I have to do ?
Thanks for your help.