Alan DeKok [mailto:[email protected]] 

> (sigh, hit send too soon)

...

> >  802.11-2007 doesn't mention
> > Called-Station-ID; 802.1X-2004 says this:
> 
>  Taken from 3580.

Whatever; 3580 says 

   This document provides suggestions on Remote Authentication Dial In
   User Service (RADIUS) usage by IEEE 802.1X Authenticators.  The
   material in this document is also included within a non-normative
   Appendix within the IEEE 802.1X specification, and is being presented
   as an IETF RFC for informational purposes.

Which suggests to me an opposite relationship, though.

> 
> > Note the use of "should".
> 
>   Which is a common practice.


???

> 
> >  In addition, there is no guarantee at all that
> > SSIDs are globally unique.
> 
>   Agreed.  However, SSIDs are *likely* to be unique within a roamin
> consortium.  This is because the parties talk to each other, and can
> complain when the SSIDs are unknown, or re-used.

What parties?  The BSSs?  Why?

> 
> > Assuming that the SSID is actually in the Called-Station-ID Attribute
> (see
> > above) and that the NAS didn't just lie in the RADIUS message, too
> (given
> > that there is no way to detect such a lie in a >1 hop AAA scenario)
> and that
> > there is no collusion between X & Z.  We seem to be assuming a _lot_
> of
> > honesty from our thieves.
> 
>   Yes.
> 
>   There are mitigating circumstances.  AAA relationships leverage trust.
>  Continued trust depends on the parties continuing to meet expectations.
>  Lying about SSIDs violates trust.

But fraud doesn't?  

> 
>   Alan DeKok.


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