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

[Hamada, Ondrej]

Hi Pavel,

Well, I suppose it is the default. I was also struggling with it and finally I had to replace the default ACLs with more strict ones.

You can try to solve the network separation on template level if you don't want to play with ACLs.

Ondra

-----Original Message-----
From: Pavel Tankov [mailto:pavel.tankov at strategyobject.com]
Sent: Friday, October 24, 2014 4:01 PM
To: Hamada, Ondrej; users at lists.opennebula.org
Subject: Re: [one-users] How to protect a virtual network from being used by users?

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
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