It's possible. There are 2 ways to do that which is häçking your own network externally or internally.pano connected sa same wifi .. ??? pano mapasok ang isang device na hindi nalalaman... yung hindi na kailangan hawakan device nya without installing anything in target ip?

Can you site a particular situation where you do this for good?Depende po kung saan gagamitin, as for me and my group we do it para sa kagandahan.