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Re: [Xen-users] Dom 0 firewall

To: Ian Tobin <itobin@xxxxxxxxxxxxx>
Subject: Re: [Xen-users] Dom 0 firewall
From: Thaddeus Hogan <thaddeus@xxxxxxxxxx>
Date: Tue, 23 Jun 2009 20:19:59 -0500 (CDT)
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----- "Ian Tobin" <itobin@xxxxxxxxxxxxx> wrote:


> Ive built a new server using xen debian lenny packages. Im trying to
> firewall dom 0 which i can do ok but it then blocks access to the dom
> Us. Has anyone managed to do this successfully?

Are you trying to restrict access to the Dom0 using iptables?

According to this page (http://wiki.xensource.com/xenwiki/XenNetworking) at the 
Xen Wiki, packets crossing the bridge interface into a vif pass through the 
FORWARD chain of iptables.  If this chain has a default policy of DROP or 
REJECT, then packets passing through the bridge to the DomUs will be impeded.

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