[zeromq-dev] Firewall Tunneling

[Kenneth Adam Miller]

So, as per the title, I have two regular machines working underneath
different firewalls, and I need to be able to get each machine talking to
one another. They each talk to a broker that helps them exchange their
address information-but just calling connect on a machine that is
potentially under a normally firewall won't work, because each side must
have a port open to receive the connection.

I'm pretty sure that the ZMQ community has dealt with firewalls before. How
do I facilitate direct direct communication from beneath a firewall?
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