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Port Forwarding Workaround?


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Do you mean like TeamViewer ?

 

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Teamviewer uses a "man-in the-middle" approach, so all clients connect to the Internet Services and that services allows them to communicate.
So you will always need an Internet facing server to connect clients, when you want to avoid a port forward to any of the clients. ;) 

Jos

Edited by Jos

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12 minutes ago, Jos said:

Teamviewer uses a "man-in the-middle" approach, so all clients connect to the Internet Services and that services allows them to communicate.

Though, AFAIK, they drop out of the middle, if possible, after establishing a P2P connection between hosts.  
In that case, it is functionally the same as STUN, and requires no port forwarding, only temporary service.

Many public STUN servers exist and are available for this purpose and the aforementioned STUN.udf has several built in to it.  I have used it successfully.

Code hard, but don’t hard code...

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Agree, that is why I said: "So you will always need an Internet facing server to connect clients". ;) 

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1 hour ago, Jos said:

Agree, that is why I said: "So you will always need an Internet facing server to connect clients". ;) 

fair enough :) 

I was just trying to point out the distinction between the man-in-the-middle just being a connection broker (which TeamViewer does), as opposed to a full-fledged store and forward packet relay (which TeamViewer also does).

Neither require port-forwarding, but the latter is probably not what the OP had in mind.

Code hard, but don’t hard code...

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