Check which ports are open to the outside world. Helps make sure that your firewall rules are working as intended.
One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.
If you can't, then:
=MIN(D4,0)+MIN(E4,0)+MIN(F
=MAX(D4,0)+MAX(E4,0)+MAX(F
and if I haven't got it right, please tell me exactly what results you are looking for.