here are some hardening tcp/ip harden tweaks for windows 7 x64t: [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters] "SynAttackProtect"=hex(b):02,00,00,00,00,00,00,00 "TcpMaxPortsExhausted"=hex(b):05,00,00,00,00,00,00,00 "TcpMaxHalfOpen"=hex(b):00,05,00,00,00,00,00,00 "TcpMaxHalfOpenRetried"=hex(b):00,04,00,00,00,00,00,00