how can i send data to a system in a shared ip

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Here my aim is to send image/data from one system to another over internet in lan its simple by giving local ip but when comes to internet i face a problem if an ip is shared how can i specify a system

eg

here ip of my system

117.206.57.120

and i want to sent a data to

117.206.57.121

but if the ip is not shared it works but if ip is shared

117.206.57.121 contains

192.168.0.2
192.168.0.3
192.168.0.4
192.168.0.5

and i want to send data to 192.168.0.3

how can i achieve this

[ 192.168.1.3 ] 117.206.57.120 to 117.206.57.121 [ 192.168.1.2 ]

Posted 10-Aug-13 6:44am

vishnulalr

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Dave Kreskowiak · Accepted Answer · 2013-08-10T08:32:00

You can't do anything from your code. The router on the client side has to be configured to forward the traffic on the specified IP and port to the system inside the network. If you have control over the voice the current is running them you can add UPnP code to set this up. If not, there's nothing you can do to select the target system from your end.