Nat hole punching for a proxy server application required

Avg Bid (USD)
Project Budget (USD)
$30 - $250

Project Description:
I have a proxy server application written in visual basic. When you install it, it creates a proxy server on the machine its installed on. It auto configures its own username and password and port. It then reports the credentials to a database which is displayed in a webpage online. But, it only reports the ip of the nat, the internal ip. I need a similar app created to be able to punch a hole and report and use the outer ip address of the connection that its going through. This is called nat hole punching. A stun server perhaps is what i need. I want the fastest possible method of transferring the data.

When I install the proxy server onto a machine, I need to be able to read the credentials from the database it reports to, and use the proxy server from any machine, not just behind the nat.


Skills required:
PHP, Software Architecture
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$ 230
in 14 days