On 03/08/2016 07:07, Michael Richardson wrote:
> 
> Joel M. Halpern <[email protected]> wrote:
>     > It strikes me that if we wish to allow for inter-domain communication 
> using
>     > GRASP, in conjunction with intra-domain usage, then the security
>     > considerations are more complex than noted so far.
> 
> I agree strongly.
> 
> In particular, I would suggest that this really calls for a different
> instance/profile of GRASP.  I.e. that routers should run a different context
> (same as running OSPF in different VRFs), and that we should even consider
> that it should do discovery on a different port.

I agree too. But there's an inevitable risk. One use case for this is a little
bit 'back to the future' - consider ASAs that act as bandwidth brokers. Network
A has a bandwidth broker. Network B has a bandwidth broker. They communicate
between domains using separate TLS-based GRASP instances. Faulty information
from A contaminates B's state, in complete security.

   Brian

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