How can I establish a TCP connection between several computers behind two firewalls?

I'd like to establish several TCP connections between computers behind a firewall.

The follow picture illustrates a simple network:

From the picture I'd like to establish 3 TCP connections:

A => 2 B => 2 C => 2

What are my options for establishing these TCP connections?

and

Can I do this without port forwarding?

-------------Problems Reply------------

You could have some server in the cloud acting as a proxy for your connections. For instance, think about how a service like LogMeIn or GoToMyPC manages connections between a client and the controlled host. This is one idea.

This should be an interesting read.

http://stackoverflow.com/questions/1539339/how-skype-work-without-port-forwarding

Category:networking Views:0 Time:2009-11-05
Tags: networking tcp

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