Network / Sharing :: Change Network Setting From Public To Private?

Since I've got windows 8 nobody was able to connect to me via hamachi, though it works when two others who have windows 8 connect to each other, so i was looking for what was different, and apparently it doesnt let through any data when it's set to "public network".

The problem here is that usually you change it by clicking on the network symbol, right-clicking your network and turn sharing on or off, but hamachi makes up another network which isn't listed in the primary interface. I've tried many things already and I'm kind of looking for a direct cmd-Command which allows me to change it quickly.

So, basically, I try to change a network-setting from public to private without using the "normal way to do it".