Re: [libvirt] nwfilter - limit VM traffic to specific mac address

On 09.11.11 09:20, Stefan Berger wrote: > On 11/09/2011 07:44 AM, Shahar Havivi wrote: >> On 09.11.11 06:44, Stefan Berger wrote: >>> On 11/09/2011 04:01 AM, Shahar Havivi wrote: >>>> On 08.11.11 16:34, Stefan Berger wrote: >>>>> On 11/07/2011 04:25 AM, Shahar Havivi wrote: >>>>>> Hi, >>>>>> >>>>>> I want to limit VM traffic to a specific MAC address, ie VMs cannot >>>>>> traffic each other other then a specific gateway. >>>>>> >>>>>> I am using custom nwfilter name: isolatedprivatevlan-vdsm.xml >>>>>> located in /etc/libvirt/nwfilter/: >>>>>> >>>>>> <filter name='isolatedprivatevlan-vdsm' chain='root'> >>>>>> <filterref filter='clean-traffic'/> >>>>>> <rule action='drop' direction='out' priority='500'> >>>>>> <mac match='no' dstmacaddr='$GATEWAY_MAC'/> >>>>>> </rule> >>>>>> </filter> >>>>>> >>>>> Try this one -- it works in 'my' subnet: >>>>> >>>>> <filter name='isolatedprivatevlan-vdsm' chain='ipv4'> >>>>> <filterref filter='clean-traffic'/> >>>>> <rule action='drop' direction='out' priority='10'> >>>>> <mac match='no' dstmacaddr='$GATEWAY_MAC'/> >>>>> </rule> >>>>> </filter> >>>> Thanks, >>>> Now it is blocking the traffic but I can't get traffic to the gateway as >>>> well... >>> That's odd. Can you ping the gateway from the VM? Is it typically >>> ping-able? Are you sure you specified the correct MAC addresses -- >>> check with 'arp -n' on a host in the same subnet and see what it >>> shows for the gateway (ping it if you don't see an entry). >>> >>> Stefan >> It's working only when I remove the line >> <filterref filter='clean-traffic'/> > >from the filter... > While you ping the gateway, can you re-add the above line to the filter? > > Stefan its working, even when stopping the ping and re-pinging the gateway, but it stop working after I stop and started the VM.