[one-users] How to protect a virtual network from being used by users?

[Pavel Tankov]

Hello Ondra,

You are right, I just saw the ACLs. They are by default created like this:

$ oneacl list
    ID     USER RES_VHNIUTGDCOZ   RID OPE_UMAC  ZONE
     0       @1     V-NI-T---O-     *     ---c    #0
     1        *     ----------Z     *     u---     *
     2       @1     -H---------     *     -m--    #0
     3       @1     --N----D---     *     u---    #0

(or see the attached screen shot)

The group named "users" is denoted by @1. So, it looks like in the very 
first ALC (ID 0) the group @1 (users) is granted a "CREATE" permission 
on all Virtual Networks (Resource ID *). Which may be OK or not, it 
depends what you want.

But then ACL (ID 3) grants the group @1 (users) the permission to use 
any Virtual Network (RID *). The ACLs have permissive nature so once 
granted I can't restrict it with a later rule. I could only re-write the 
default ACLs completely, which I am not quite willing to try.

The documentation says 
(http://docs.opennebula.org/4.8/administration/users_and_groups/manage_acl.html):

Please note: the ACL rules is an advanced mechanism. For most use cases, 
you should be able to rely on the built-in resource permissions and the 
ACL Rules created automatically when a group is created, and when a 
resource provider is added.

But it looks like *all* Vritual Networks are meant to be used by 
*anyone* by default and there is not much I can do about it with the 
normal means, namely with the resource permissions.

Is that so, indeed, or where am I wrong?

Pavel Tankov

On 10/24/2014 04:33 PM, Hamada, Ondrej wrote:
> Hi Pavel,
>
> Have you checked ACLs as well? I guess that one of the default ACL grants all users the 'use' permission for all 'networks'.
>
> Ondra
>
> -----Original Message-----
> From: Users [mailto:users-bounces at lists.opennebula.org] On Behalf Of Pavel Tankov
> Sent: Friday, October 24, 2014 12:09 PM
> To: users at lists.opennebula.org
> Subject: [one-users] How to protect a virtual network from being used by users?
>
> Hello,
>
> I (as oneadmin) have configured two virtual networks:
> - one named "default" for use by regular users to deploy disposable test VMs
> - one named "SPECIAL" for use by the admin to create servers that will not be disposable but will stay always ON
>
> Both networks have different IP ranges so that you could easily tell whether it's a server or a disposable test VM by looking at it's IP address.
>
> I have set up Opennebula with LDAP authentication. LDAP users authenticate just fine and are able to create themselves VMs using those templates that the admin has allowed for them. Now, I'd like to make so that only "default" virtual network is exposed to regular users, and "SPECIAL" is not seen by them.
>
> Currently, both networks have the following permissions:
>
> - Owner: use, manage
> - Group <none>
> - Other: <none>
>
> Users still can use both of these when they deploy a test VM although permissions clearly state they shouldn't be able to see any of them.
>
> What is wrong with the permissions?
>
> --
> Pavel Tankov
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
> ________________________________
> This e-mail and any attachment is for authorised use by the intended recipient(s) only. It may contain proprietary material, confidential information and/or be subject to legal privilege. It should not be copied, disclosed to, retained or used by, any other party. If you are not an intended recipient then please promptly delete this e-mail and any attachment and all copies and inform the sender. Thank you for understanding.
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: opennebula-acls.png
Type: image/png
Size: 30567 bytes
Desc: not available
URL: <http://lists.opennebula.org/pipermail/users-opennebula.org/attachments/20141024/05bf4e2e/attachment-0001.png>