Re: Need to remove 802.1Q tagging

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Would the following work

ebtables -A INPUT -i eth0.10 -o eth1 -j DROP    <-------- Block
eth0.10 vlan from sending traffic to eth1
ebtables -A INPUT -i eth0.+ -o eth1 -j DROP      <------ BLock all
vlans from sending traffic to eth1

On Fri, Oct 7, 2011 at 2:52 PM, Marek Kierdelewicz <marek@xxxxxxxxx> wrote:
> Hi,
>
>>I am thinking that the two interfaces on the Linux box will be bridged
>>(in transparent mode) and when traffic passes through the linux box
>>the vlan 802.1q tag can be removed and then the traffic goes to the
>>Is my thinking correct?  Will this work?  What all do I need to be
>>aware of and are there any current examples that point to what I am
>>trying to do???  I am very new to netfilter and ebtables (I found out
>>about it last night).
>
> Your idea should work.
>
> Let's assume that "south" interface of Linux bridge on your diagram is
> eth0 and "north" is eth1.
>
> You can bridge all eth0.X vlan interfaces and eth1 to single bridge
> with stp off. You should probably filter traffic on that bridge
> and allow anything but eth0.x <-> eth1. It's also a good thing to setup
> filtering ruleset before you start bridging (l'oops :).
>
> I've similar solution working very well in production environment. It
> involves providing pppoe on multiple vlans.
>
> If you need any more implementation details please feel free to ask on
> prv.
>
> Best regards,
> Marek Kierdelewicz
>



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