On Fri, Aug 12, 2016 at 8:17 PM, Bill Bill <jax2568@outlook.com> wrote:
Cool. It looks like that works. Perhaps it would be good for oVirt to have a few text fields in the nic properties to enter IP addresses into which can match the rules being used. For example, when enabling the clean-traffic filter it appears the VM can only have 1 IP address, even if another IP is added legitimately, it still only works with the original IP address.
Something like this: http://i.imgur.com/9BUZRCN.jpg
So essentially, traffic would be blocked on that VM for any other IP space other than the IP’s entered into the text fields, which then edit/work with the netfilter rules. The idea would be to click “click to add more” would add another text field.
That could have been a nice option indeed. Could you please open an RFE on bugzilla so we can consider and manage this? Thanks, Edy.
*From: *Edward Haas <ehaas@redhat.com> *Sent: *Thursday, August 4, 2016 3:47 AM *To: *Subhendu Ghosh <sghosh@redhat.com> *Cc: *Bill Bill <jax2568@outlook.com>; users <users@ovirt.org> *Subject: *Re: [ovirt-users] IP Address Stealing
On Thu, Aug 4, 2016 at 6:27 AM, Subhendu Ghosh <sghosh@redhat.com> wrote:
Not built into ovirt AFAIK, but an ebtables rule can allow you to filter out mac+ip combinations
Look at the anti-spoofing rules on ebtables.netfilter.org
It doesn't prevent the user adding it in the vm, but the infrastructure blocks it's usage.
------------------------------ *From:* Bill Bill <jax2568@outlook.com> *Sent:* Aug 3, 2016 22:40 *To:* users@ovirt.org *Subject:* [ovirt-users] IP Address Stealing
Hello,
It is possible to prevent a VM from adding an IP? For example, if we provision a VM with one IP, if the user has root access they can simply add random IP’s from within the same range as sub interfaces: eth0:0 eth0:1 eth0:2 so on and so forth.
Subnetting is not ideal in this situation because it’s a huge waste of IP space.
In oVirt 4.0, you can choose a vnic libvirt filter from a list (at the vnic profile settings). You can check the clean-traffic filter which uses multiple other more specific filters. Ref: https://libvirt.org/formatnwfilter.html
Thanks, Edy.
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