IPTABLES

nmap being used by Trinity in The Matrix to detect ssh running on a vulnerable node before launching an attack on the sshv1 CRC32 flaw and gaining root to shut down the power grid.



Rule1 : Target REJECT do with a TCP-RESET

-A INPUT -i eth0 -p tcp -m tcp --dport 443 -j REJECT --reject-with tcp-reset

result : 443/tcp closed https