Re: [Qemu-devel] -device ipmi-bmc-sim attached to -netdev vde

[Corey Minyard]

On Mon, Mar 04, 2019 at 05:09:00PM +0000, Daniel P. Berrangé wrote:
> On Tue, Feb 19, 2019 at 09:07:08PM -0600, Corey Minyard wrote:
> > My suggestion, though, would be to implement something that ran over
> > TLS with two-way authentication.  It doesn't look too hard to do
> > in qemu (though I haven't tried it) but you could have a qemu console
> > running over TLS that would allow you control from another qemu session.
> > Plus it would give you authorization and encryption on your qemu
> > console logins, which is probably a good thing.
> > 
> > <shameless-plug> I have been working on a library that makes it easy
> > (easier?  The pain is always in the key management) to make TLS
> > connections.  It's at https://github.com/cminyard/gensio and you
> > can use it from C or Python.</shameless-plug>
> 
> On the QEMU side, we already have a framework for doing socket
> connections with TLS support in a straightforward manner via
> the QIOChannel framework. The code using this in QEMU doesn't
> really need to know anything about TLS in order to use this.
> We have it wired up in character devices, VNC, migration and
> NBD network sockets.

Right, I wasn't clear, that was for the client side, not the
qemu side.  I saw that the TLS code was already present in
qemu; no qemu modifications should be required.

> 
> Last week my authorization series merged, so that we can also
> easily deal with access control whitelisting permitted clients
> via their x509 certificate distinguished name.

That's even better.

Thanks,

-corey

> 
> So I'd expect anything on the QEMU side that introduces new
> network sockets usage to support TLS out of the box with
> little extra effort required over plain TCP sockets.
> 
> Regards,
> Daniel
> -- 
> |: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
> |: https://libvirt.org         -o-            https://fstop138.berrange.com :|
> |: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|