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xen-users
Re: [Xen-users] advanced bridging...
Hi Geert,
you scheme it's so cool, I think it is one of the best way to secure
Xen, I use similar config for one of my Xen servers.
You can do it manualy, as told Bock. Normally, I use a wrapper of
network-bridge. One question:
In CentOS are xend-config.sxp and network-bridge scripts? In this case I
can post the config
Regards,
Marc
Geert Janssens wrote:
Hi Marc,
I have seen two network diagrams of you passing in the thread already and they
both helped me understand the Xen networking a lot better.
The first diagram explained how to setup a Xen system with 1 physical NIC,
where one domU acts as a firewall for the other domU's. In this scenario,
dom0 is connected to the bridge that links to the unsafe net (the "outside"
network for the domU firewall).
The second diagram explained who to setup a Xen system with 2 physical NICs,
dom0 acts as a firewall between the two NICs. It is setup with two bridges,
one that connects the internet side of the virtual network (first physical
NIC and first virtual NIC) and one that connects the LAN side of the virtual
network (seconf physical NIC for the rest of the LAN, second virtual NIC for
dom0 and virtual NICs for the different domU's).
Unfortunatly, what I am trying to achieve is yet another slight variation. See
the attached image.
I would like to setup a system with two physical NICs (peth0 and peth1), where
the firewall runs in domU.
For that I would like to setup two xen bridges.
The first is on the LAN side, and is a typical Xen bridge: one physical NIC, a
virtual NIC for dom0 and one for domU.
The second would be on the internet side, but it should NOT have a virtual NIC
for dom0, only for domU. The idea is that dom0 should not be accessible from
the internet, only from the LAN.
Is such a setup possible ? And if yes, how ?
Thank you.
Geert Janssens
P.S. in an earlier attempt I tried to eliminate the second bridge altogether
by assigning peth1 directly to the domU with PCI back. Unfortunatly, I can't
seem to get PCI back working correctly on my system, so I'd like to try this
alternative approach.
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