Rob Owens <row...@ptd.net> writes:
> On Thu, Sep 13, 2012 at 10:32:40PM +0200, lee wrote:
>> Hi,
>>
>> since I'm not making any progress: I want to set up a VM (running
>> testing) that can be reachable from the outside over the network. I've
>> done that 2 years or so ago and I forgot how to do the networking setup,
>> and network configuration has changed in the meantime.
>>
>> I need to somehow set up a bridge interface so the guest can tap into
>> it. I don't understand the docs I found about that. Looking at [1], I
>> can see that my physical network adaptor won't have an IP address
>> anymore and that there is only a bridge interface instead. This is
>> probably not what I want, and I remember I did it differently before,
>> after lots of experimenting.
>>
> If you're using Virtualbox, you don't need to set up a bridged interface
> with regular Linux tools. You can just select "Bridged networking" for
> your virtual machine and Virtualbox handles it.
>
> In older versions of Virtualbox, it was necessary to set up a bridged
> interface using Linux tools. Their documentation covered it fairly well
> as I recall. I think that was in the version 1.x days. Maybe you can
> find some of their old documentation.
Oh I should have mentioned that I'm not using Virtualbox but qemu/kvm or
how it's called. That seems to suggest using a bridge[1], and I find
that very confusing. I understand that apparently I am supposed to
replace my currently used eth1 by a bride device which uses eth1 and to
which I could add other physical devices like eth0. I don't understand
what the purpose of adding more physical devices would be and what I
actually get when I have such a bridge device and what all that has to
do with a guest.
It seems to me that having the bridge device in theory would somehow
magically enable me to give the guest an IP address in the same network
as the host is. That isn't what I want because I want the guest behind
the firewall which is on the host (using shorewall). Of course, I also
don't want to compromise eth1 in any way and don't want to have my
firewall somehow penetrated, which I have no idea about whether it could
happen or not with introducing a bridge device.
I don't get it, it doesn't make any sense to me. At this point, I don't
even know what questions I need to ask.
[1]: ... or allowing the guest access to a physical network card, about
which I don't know whether my hardware would support it or not ---
and I'd have to buy a network cable and plug that into the router
in which case the guest still won't be behind the firewall of the
host
--
Debian testing amd64
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