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6.4

Problem Communicating behind NAT/firewall

Asked by Vinod_VijayanVin in C# Programming Language

Tags: behind, firewall

Hello Experts,
 
 We creating a client-server chat program. The program works fine in the absence of  NAT/firewall.
 But if either the server or client is behind NAT then communication with it cannot take place from
 outside.  Now is there a way to make the communication  possible even if either of the client or server
 is behind the firewall/NAT.Can this be done without  port forwarding or addding any rule to the
 NAT/firewall just like how the Yahoo Messenger does it.  We are using C# Socket Programming.
Any idea or C# code for solving the problem is welcome.

Thanks in advance.

[+][-]08/11/05 11:20 AM, ID: 14654315Accepted Solution

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About this solution

Zone: C# Programming Language
Tags: behind, firewall
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Solution Provided By: modulo
Participating Experts: 2
Solution Grade: A
 
[+][-]06/10/05 08:21 AM, ID: 14189524Expert Comment

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