Router Help Page - 1
Router help
Pinging Client behind firewall explained.
http://www.vbforums.com/showthread.php?354169-How-to-ping-computer-behind-home-router
http://192.168.1.120:3627 24.172.12.174:3627 216.237.208.240:5445
Ports! You connect by a local port / address to a distant port / address. Here is my connection to vbforums at this instant in time.
192.168.3.5:3627 10.239.99.158:3627 63.236.73.220:80