I often use netstat to see the established connections during on-line gaming. This often gives a clue about the geographic location of players. However, on one occasion, with myself and one other player in the game, no connections showed up, it was like I was in the game alone. The player said he was not behind a fire wall but did have a router. Is this a normal feature of a router set-up or is it purposely stealthed in some way? I ask only to gain more understanding of how netstat works.