Wez:
Heya. Yes: with no ports enabled/forwarded, two Kaboodle users can VNC and file-transfer with each other.
As for what it implies about the firewalls...that's a very big "it depends". Kaboodle uses the open-source echoWare.DLL to establish a long-term TCP connection with an echoServer called KaboodleProxy that acts as a "relay" between Kaboodle clients. So if the firewall is smart enough to block an echoWare to echoServer connection, then of course it won't work. But consumer-grade firewall/routers like LinkSys and Netgear products aren't that smart: by default, they will allow out any outbound connections. And since the echoServer owner can run that server on any port they want (443, for example), the connection will be passed on most commercial-grade firewalls -- with their out of the box configuration -- as well.
With the echoWare/echoServer approach, all of the traffic looks like it's "outgoing", from the perspective of the firewall.
Which is, of course, the same approach that VNC's "add client" and SSH's "reverse tunnels" have been utilizing for years.
cheers, Scott
On Mon, 8 Nov 2004, James Weatherall wrote:
Heyaz. I released version 0.99d of Kaboodle today. As some might recall...when you use Kaboodle to connect two networks together using KaboodleProxy, you can VNC and file-transfer across a firewall/router without either side having to do any port-forwarding adjustments. No really. :)
Through two *completely* closed firewalls, i.e. with no ports enabled/forwarded? Doesn't that imply that the firewalls really aren't doing a very good job? ;)
Wez @ RealVNC Ltd.
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