Re: [Xen-devel] Bridging firewall?

[Felipe Alfaro Solana <lkml@xxxxxxx>]

On 21 Jan 2005, at 14:55, Grzegorz Milos wrote:

> > Is it possible with Xen to construct something like the following 
> > scenario.
> > Free/NetBSD (*) domU server running pf or Linux/iptables, acting as a
> > routing or bridging firewall for all the other domU guests? Further 
> > more
> > create virtual DMZ and internal services.
> >
> > You'd probably keep the dom0 instance otherside this setup, with its 
> > own
> > filtering arrangement.
> If you give direct network device access to first domU you can set-up 
> your
> scheme fairly easily. Otherwise (in the standard setup) dom0 will be 
> handling
> all the incomming/outgoing traffic with no involvment from first domU 
> (so no
> firewall possible there).
How? I thought all network traffic must pass through domain0 in first 
instance. How do you give a domainU instance direct access to a network 
interface, like eth1? I'm currently using a bridge, xen-br0, attached 
to eth1, and domainU attached to xen-br0. How can I configure domainU 
to attach to eth1 directly?


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