These wiki articles should help.
Supported Network Protocols:
http://thingsthataresmart.wiki/index.php?title=Supported_Network_Protocols
Repeaters:
http://thingsthataresmart.wiki/index.php?title=Repeaters
And to go back to your original question, I would read the FAQ on wireless range:
Note that anything that blocks signal does reduce signal strength somewhat, and therefore the range of the hub to the first repeater.
A plain wooden cabinet closed, will probably only cut strength by about 10%, so typically 4 or 5 feet less than being fully exposed. You probably wouldn’t even notice that.
If you put it inside a metal cabinet, however, or behind concrete, for inside a heavily lacquered cabinet with metallic paint, then the signal may have a hard time getting out.
But again, the FAQs should answer most questions. 