EchoVNC is essentially a VNC-specific application built around
the echoWare DLL. As described below, echoWare clients connect
to each other across a network via a traditional "packet relay server"
approach. In this approach, the two ends of the connection make
"outgoing" connections to a 3rd party "packet relay server". Since
none of these connections appear to be "incoming" from the
point of view of any firewalls or NAT'ing routers protecting the
end user's network, the connections will not get blocked, allowing
end-to-end data connections to work.

Specific details about the clients, servers and related aspects is
described below.

What is echoWare?
What is a "packet relay server"?
How does a packet relay server help?
Where can I get my own echoServer?
Is it secure to make a VNC connection thru an echoServer?
Exactly how do I activate the data encryption?