[Engine-devel] Adding VNC support

[Ewoud Kohl van Wijngaarden]

On Tue, Jul 31, 2012 at 10:09:26AM +0100, Daniel P. Berrange wrote:
> On Tue, Jul 31, 2012 at 09:18:50AM +0300, Itamar Heim wrote:
> > On 07/26/2012 05:36 PM, snmishra at linux.vnet.ibm.com wrote:
> > 5.2 novnc websocket server - i see three options
> >
> > 5.2.1 extend qemu to do this, so novnc can connect to it directly
> > like we do today for vnc/spice
>
> I don't think this is a desirable approach. One of the nice benefits
> you gain from using a websocket proxy is that you only need to have
> one single TCP port exposed to the internet now. If you put websockets
> in QEMU itself, you'd be stuck with having to open your firewall to
> allow 100's of ports. With a separate web proxy, you can even make
> each QEMU server now use a local UNIX socket for their VNC server,
> since only the proxy needs to be able to connect. This means that
> the VNC server would no longer be exposed to random local user
> access too.

Another benefit of a proxy is that you can run it in a DMZ and not have
to expose all your virtualization hosts to the internet.