Re: [Emu] Some proposed error conditions for draft-ietf-emu-eap-tunnel-method

2013-08-24 Thread Sam Hartman
 Stefan == Stefan Winter stefan.win...@restena.lu writes:


I think this is too detailed.
The error codes MAY be used.
Full stop.
Whether you can is a complex policy and implementation discussion best
hidden behind a MAY.
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Re: [Emu] Some proposed error conditions for draft-ietf-emu-eap-tunnel-method

2013-08-19 Thread Stefan Winter
Hi,

 Stefan This limits the scope of the error conditions to cases where
 Stefan TEAP has all in its own hands - which I believe is limited
 Stefan to the Optional Password Authentication of chapter 3.3.2.
 
 DIsagreed.
 AAA servers don't signal all of these up, but AAA servers often signal a
 number of these.
 For example in Freeradius I could actually figure out a number of these
 even across an inner tunnel and could easily expand the server to do
 better than that.
 However if you have nothing else then  you are left with inner method
 error.

Yes, it occured to me afer sending that my mind model was maybe a bit
too strict: there is no /protocol/ way for things to transpire from
inner to outer; but there may be be other means (like shared memory in
the server process) *if* inner and outer terminate at the same server.
If the inner method is proxied elsewhere, then we're out of luck in
terms of getting specific error conditions from the inner method;
proper protocol-based signaling would then be required but doesn't exist.

I guess it comes down to wordsmithing to express this correctly; like
will work for TEAP's simple password auth, and *may* work for inner
EAP, if inner and outer termination point are co-located, or otherwise
have an unspecified out-of-band protocol of their own for signalling
error conditions between inner and outer termination point.

Greetings,

Stefan Winter

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Stefan WINTER
Ingenieur de Recherche
Fondation RESTENA - Réseau Téléinformatique de l'Education Nationale et
de la Recherche
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L-1359 Luxembourg

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