Disable the firewall completely
netsh.exe firewall set opmode mode=disable profile=all
Set a portnumber open
netsh.exe firewall set portopening tcp 123 MYSERVICE enable all
Open port 123 with a description/name MYSERVICE
Set an allowed program
netsh.exe firewall set allowedprogram C:\MYPROGRAM.exe
Give C:\MYPROGRAM.exe full access
