[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]

Re: [libvirt-users] East-west traffic network filter





On Thu, Jun 28, 2018 at 2:40 PM Daniel P. Berrangé <berrange redhat com> wrote:
On Thu, Jun 28, 2018 at 10:18:57AM +0200, Ales Musil wrote:
> Hello,
>
> I would like to make filter that allows communication only between
> specified VMs. Those VMs should be specified by their MAC address. The
> filter should extend clean-traffic but I was not able to get it working
> with that reference. I have came up with modified clean-traffic which works
> fine [1]. Is there a way to achieve the same behavior with reference to
> clean-traffic?

Honestly I think the way you've done it is the right way. "clean-traffic"
is best thought of as a simple demo. If it does what you need, great, but
we'd expect people to create their own filters for anything more advanced.
The clean-traffic rules were modularized so you can use <filterrefs> to
avoid too much duplication. So what you've done looks fine to me.

 
Alright, thank you. 

> [1]
> <filter name='clean-traffic-gateway'>
> <!-- An example of a traffic filter enforcing clean traffic
>         from a VM by
>       - preventing MAC spoofing -->
> <filterref filter='no-mac-spoofing'/>
>
> <!-- preventing IP spoofing on outgoing -->
> <filterref filter='no-ip-spoofing'/>
> <!-- preventing ARP spoofing/poisoning -->
>   <filterref filter='no-arp-spoofing'/>
> <!-- accept all other incoming and outgoing ARP traffic -->
>   <rule action="" direction='inout' priority='-500'>
>     <mac protocolid='arp'/>
>   </rule>
> <!-- accept traffic only from specified MAC address -->
> <rule action="" direction='in'>
>                 <mac match='yes' srcmacaddr='$GATEWAY_MAC'
> srcmacmask='$GATEWAY_MAC_MASK' />
>         </rule>
> <!-- allow traffic only to specified MAC address -->
>         <rule action="" direction='out'>
>                 <mac match='yes' dstmacaddr='$GATEWAY_MAC'
> dstmacmask='$GATEWAY_MAC_MASK' />
>         </rule>
> <!-- preventing any other traffic than between specified MACs
> and ARP -->
>   <filterref filter='no-other-l2-traffic'/>
>
> <!-- allow qemu to send a self-announce upon migration end -->
> <filterref filter='qemu-announce-self'/>
> </filter>
>
>
> --
>
> ALES MUSIL
> INTERN - rhv network
>
> Red Hat EMEA <https://www.redhat.com/>
>
>
> amusil redhat com   IM: amusil
> <https://red.ht/sig>

> _______________________________________________
> libvirt-users mailing list
> libvirt-users redhat com
> https://www.redhat.com/mailman/listinfo/libvirt-users


Regards,
Daniel
--
|: https://berrange.com      -o-    https://www.flickr.com/photos/dberrange :|
|: https://libvirt.org         -o-            https://fstop138.berrange.com :|
|: https://entangle-photo.org    -o-    https://www.instagram.com/dberrange :|


--

ALES MUSIL

Associate Software Engineer - rhv network

Red Hat EMEA


amusil redhat com   IM: amusil


[Date Prev][Date Next]   [Thread Prev][Thread Next]   [Thread Index] [Date Index] [Author Index]