Firewall ON
 [HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"EnableFirewall"=dword:00000001
"DoNotAllowExceptions"=dword:00000000

Firewall OFF
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"EnableFirewall"=dword:00000000
"DoNotAllowExceptions"=dword:00000000