Re: [ovirt-users] Ip spoofing
Hi Dan,
I try the following way :-
1. I placed your script in the following location
:- /usr/libexec/vdsm/hooks/before_device_create/50_noipspoof &
/usr/libexec/vdsm/hooks/before_nic_hotplug/50_noipspoof
2. Then run this command on the ovirt-engine server (engine-config -s
"UserDefinedVMProperties=noipspoof=^[0-9.]*$")
3. After that stop the VM and set a custom property named "noipspoof" with
ip 10.10.10.6.
4. Run the VM and login via ssh,configure another ethernet with eth0:0 with
the ip address 10.10.10.9
5. From another VM with ip 10.10.10.5 i can able to ping 10.10.10.9....
One strange thing is in VM xml still the filter is "vdsm-no-mac-spoofing"
instead of "noipspoof"
----------------
<interface type='bridge'>
<mac address='00:1a:4a:81:80:09'/>
<source bridge='private'/>
<target dev='vnet0'/>
<model type='virtio'/>
<filterref filter='vdsm-no-mac-spoofing'/>
<link state='up'/>
<alias name='net0'/>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x05'
function='0x0'/
----------------
Please let me know if i am wrong here....
[image: Inline image 1]
On Tue, Jun 24, 2014 at 8:06 PM, Dan Kenigsberg <danken(a)redhat.com> wrote:
On Tue, Jun 24, 2014 at 05:52:51PM +0800, Punit Dambiwal wrote:
> Hi Den,
>
> Thanks for the updates...but still the user can spoof the another ip
> address by manually edit the ifcfg-eth0:0 file....
>
> Like if i assign the 10.0.0.5 ip address to one VM through
cloud-int...once
> the VM bootup user can login to VM and create another virtual ethernet
> device and add another ip address 10.0.0.6 to this VM....
>
> I want in anyhow the user can not spoof the ip address....either they can
> edit but the new ip address can not boot up(should not active)...
>
> Thanks,
> Punit
Have you placed my script properly? Could you share your domxml as
visible to libvirt?
virsh -r dumxml <name-of-your-vm>
And as alluded by Sven - could you try to use the spooded IP address?
Configuring is not blocked by the filter, only using it (try pinging
outside of the VM).
Regrads,
Dan.
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