[GRLUG] Virtualization host networking

Robert Citek robert.citek at gmail.com
Wed Dec 9 17:32:57 EST 2015

Sounds like you are trying to do NAT with port-forwarding.  Is that correct?

That's fairly straightforward to do with the VirtualBox Manager.  And
there's some docs for using the command line, too:


Xen has docs on NAT, but it's not obvious how to set up the
port-forwarding (other than manually configuring iptables):


Good luck and let us know how things work out.

- Robert

On Wed, Dec 9, 2015 at 12:25 PM, L. V. Lammert <lvl at omnitec.net> wrote:
> Building a new server for many guest machines for public services, ..
> started with OpenSuSE & Xen for compatibility with our environment.
> For best security, I would like to have an interfaces on the inside LAN
> (e.g. 10.0.0.n), with the other on the public network.
> What I can't wrap my head around is how to configure the network:
>  The host machine has br0 (public) and br3 (private); how does one
>  configure routing so the private network can connect for all ports,
>  while the public network provides connection to each guest machine for
>  web traffic (80/443 - nothing else)?
> Any pointers or examples would be much appreciated.
>         TIA!
>         Le
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