locus of control.  centralization of resource control.
 lack of autonomy in an end-to-end system.   trust anchor placement
 is "just another brick in the wall" here.  but i have now dragged out 
 my soapbox and i'm pretty sure this is not speakers corner... 
 
 so i'll shut up and go back in the woodwork.
--bill


On Thu, Apr 23, 2009 at 02:11:44PM -0400, John Schnizlein wrote:
> Locus of control?  Or that pesky old trust anchor?
> 
> Separable issues: where the validation computations are done, and  
> setting (and updating) the trust anchor.  For computation, the  
> advantage of caching after validation in the (shared) recursive  
> resolver probably does not keep up with the performance improvements  
> of (end) hosts.  Distributing trust anchors to hosts is another scale  
> step harder than maintaining them on (shared - validating) recursive  
> resolvers.
> 
> Speaking of the popularity of DHCP, that is all about distributing  
> current parameters to (end) hosts.  If only there were a trustworthy  
> way to do that.  DHCP could do that, except for the key distribution  
> problem (again).  But some sort of key distribution is necessary to  
> protect the hop from a stub resolver and the recursive resolver also.
> 
> My guess is that the solutions for updating (end) host software will  
> get trustworthy enough to be used for DNSSEC trust anchors, and the  
> validation will end up in the (end) host.  Until the host OS  
> manufacturers realize this is worth their while, validation in hand- 
> crafted recursive resolvers can get things started.
> 
> John
> 
> On 2009Apr23, at 1:37 PM, bmann...@vacation.karoshi.com wrote:
> 
> >On Thu, Apr 23, 2009 at 12:52:37PM -0400, Edward Lewis wrote:
> >>At 8:43 -0700 4/23/09, David Conrad wrote:
> >>
> >>>root servers). However the point is that you need to do the  
> >>>validation
> >>>someplace you can talk securely to.  The easiest answer is to  
> >>>simply do the
> >>>validation on the same host.
> >>>
> >>>I figure stub resolvers were needed when cpu/bandwidth/memory were  
> >>>a bit
> >>>more expensive than now.  It seems a shame to constrain our  
> >>>architecture
> >>>to the '80s...
> >>
> >>OTOH, for the one of the same reasons DHCP is so popular, that is
> >>centralized local management, it is desirable (in some instances) to
> >>have the validation done in the commons and not in end hosts.
> >
> >     locus of control.
> >
> >     i happen to agree w/ David here.  there really is no serious  
> >technical
> >     hurdle for moving a full-bore DNS IMR into most platforms these days
> >     (modulo the RFIDs and some of the IoT stuff).
> >
> >     the upsides are huge for mobility, ad-hoc, and temporally  
> >disconnected
> >     networks.
> >
> >     the downsides are the LEOS (protecting our security), and the  
> >Shylocks
> >     who need to collect what remains of the lunch money.
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